Soma Branch, Fukushima Prefectural Fisheries Experimental Station, Soma, Fukushima , Japan. 2

Size: px
Start display at page:

Download "Soma Branch, Fukushima Prefectural Fisheries Experimental Station, Soma, Fukushima , Japan. 2"

Transcription

1 Aquaculture Sci Detection of Fishing Grounds, Fishing Season, and Size Distribution of Stocked Barfin Flounder Verasper moseri in Southern Tohoku, the Pacific Coast of Eastern Japan Toshihiro WADA 1,, Kyoichi KAMIYAMA 1, Shinya SHIMAMURA 2, Tetsuya YOSHIDA 3, Takaaki KAYABA 4 and Masayoshi SASAKI 4 Abstract: Barfin flounder Verasper moseri, a rare pleuronectid flatfish, is a target species for stock enhancement programs in Hokkaido (42 N) and Iwate (39 N) prefectures in northern Japan. To elucidate the fishing grounds, fishing season, and size distribution of stocked barfin flounder in southern Tohoku, on the Pacific coast of eastern Japan, fishery data and daily fishery records of offshore bottom-trawl vessels in Fukushima Prefecture were analyzed during The size distributions in the largest fish market in Fukushima were investigated in Annual landings increased from lower levels to the highest 1.1 t in 2006, which probably related to the increase of released seedlings in Hokkaido and Iwate prefectures. The main fishing areas evaluated by quantitative assessment of fishery records were found in southernmost Tohoku ( N) at depths of around 300 m (mean m). Remarkable seasonality of the landings was detected: over 92% were caught during January-April, with the peak period during February-March (68% in total). The two size modes detected in the landings presumably comprised males (ca. 43 cm TL, n = 361) and females (ca. 60 cm TL, n = 42). Key words: Fishing ground and season; Size distribution; Southern Tohoku; Verasper moseri Barfin flounder Verasper moseri, a pleuronectid flatfish, are distributed in cold water areas around the northwestern Pacific, including the northern Sea of Japan and the Pacific coast of northern Japan (Amaoka et al. 1995). This flounder, growing to 80 cm standard length (Andoh et al. 1999), was a commercially important flatfish species in Hokkaido, the northernmost prefecture of Japan, in the early mid- 20th century because of its palatability and high commercial price (Andoh et al. 1999; Takaya 2011). However, after the late 1970s, commercial landings decreased drastically in Hokkaido (Sasaki 1997) and putatively in Tohoku (Wada et al. 2011) (Fig. 1), probably because of overfishing for young and matured adults (Sasaki 1997). Subsequently, this species was listed as a rare marine fish species in the 1990s (Minami 1998). To recover their severely depleted stock condition, stock enhancement activities for barfin flounder commenced in Hokkaido and Iwate prefectures (Fig. 1), respectively, from 1987 (Watanabe et al. 2001) and 1990 (Sasaki and Nakai 2006). Results for each locality show a gradual increase of commercial landings (Sasaki and Nakai 2006; Misaka and Sasaki 2008). Since 2006, a large-scale stock enhancement program implemented in southwestern Hokkaido has dramatically augmented commercial landings around the released areas by annually releasing more than one million seedlings (Yoshida et al. 2011). Received 15 May 2012; Accepted 28 November Soma Branch, Fukushima Prefectural Fisheries Experimental Station, Soma, Fukushima , Japan. 2 Fukushima Prefectural Fisheries Experimental Station, Iwaki, Fukushima , Japan. 3 Fishery Office of Fukushima Prefectural Government, Iwaki, Fukushima , Japan. 4 Hokkaido Research Organization, Kushiro Fisheries Research Institute, Kushiro, Hokkaido , Japan. Corresponding author: Tel, (+81) ; Fax, (+81) ; , wada385@yahoo.co.jp (T. Wada).

2 T. Wada, K. Kamiyama, S. Shimamura, T. Yoshida, T. Kayaba and M. Sasaki Nevertheless, to date, the recovery of wild populations through intergenerational effects from stocked populations (indirect contribution by reproducing the next generation) has not been confirmed clearly (Kayaba 2009): Few wild fish have been caught recently even in Hokkaido, the main distribution area of this flatfish (Andoh et al. 1999). Therefore, a wider understanding of life history traits of released barfin flounder is necessary to replenish severely depleted natural stocks efficiently. Recent tag-recapture surveys of cultured barfin flounder have revealed that some tagged fish released in Hokkaido moved to southern Tohoku (Takaya et al. 2009a; Yoshida et al. 2011), where wild fish had been caught at least in the 1980s (Wada et al. 2011). These results suggest that the effects of stock enhancement programs in Hokkaido can extend to southern Tohoku (Wada et al. 2011). Subsequently, recent information related to commercial catches of barfin flounder in southern Tohoku will help in clarifying the migration pattern and detailed life history cycle of this rare flatfish, and will serve as a basis for promoting future efficient stock enhancement programs of barfin flounder. Wada et al. (2011) first described the geographical distribution of fishing grounds of barfin flounder in southern Tohoku. For data of , they analyzed daily fishery records of an offshore bottom-trawl vessel, which revealed that barfin flounder were caught at the upper continental slope in the Joban area (Fig. 1a) at depths of m. However, more detailed analyses for larger areas encompassing southern Tohoku are necessary because the results obtained by Wada et al. (2011) reflected only a small quantity of barfin Fig. 1. Map of study area. (a) Hokkaido and six prefectures (Aomori, Iwate, Miyagi, Fukushima, Ibaraki, and Chiba) located at the Pacific coast of eastern-northeastern Japan. Tohoku and Joban areas are indicated by arrows. (b) Map of southern Tohoku. Soma-Haragama (open triangle) and Onahama (open square) fish markets are shown in Fukushima Prefecture. Isolines show depth.

3 Verasper moseri Caught in Southern Tohoku flounder (4.5 kg) caught within a limited fishing area in southern Tohoku ( N, E, m depth). Moreover, they did not investigate the seasonality of landings and size distribution of barfin flounder. This study elucidates seasonal variation of landings and fishing grounds of barfin flounder landed in Fukushima Prefecture through assessments of fishery statistics and daily fishery records of offshore bottom-trawl vessels during , when larger amounts of stocked barfin flounder were landed than the quantities inferred from an earlier study period of (Wada et al. 2011). Additionally, the size distribution of barfin flounder landed at the largest fish market in Fukushima Prefecture was investigated in Offshore bottom-trawl vessels of Fukushima Prefecture analyzed in this study have permission to operate in broader fishing areas from southern Iwate Prefecture to northern Chiba Prefecture (Fig. 1). Therefore, the obtained results reliably reflect the characteristics of commercial catches of barfin flounder throughout southern Tohoku. Materials and Methods Fishery statistics The mean annual landings of barfin flounder during were calculated for two fish markets (Soma-Haragama, Onahama, Fig. 1) from the market databases, where a species identification code has been assigned for barfin flounder. Almost all barfin flounder landings in Fukushima Prefecture were landed at the two markets. In addition, fishery data in Onahama fish market during were referred from Wada et al. (2011) to assess the longterm trend of landings. Furthermore, monthly variations of fishery landings achieved using respective fishing methods [offshore trawl ( > 15 t vessel), coastal trawl (< 15 t vessel), gillnet, and others] during were calculated from fishery data to reveal the seasonal variation of commercial landings of barfin flounder. Sample vessel surveys To determine the fishing grounds of barfin flounder landed in Fukushima Prefecture, daily fishery records of three offshore bottom-trawl vessels (19-42 tons) were analyzed during The records, written by a chief fisherman, included data reflecting the (1) fishing dates, (2) location of fishing grounds (Loran-A or latitude and longitude, and depth), (3) net-entering and net-hauling times for each operation, and (4) catches (nearest 0.1 kg) of a maximum of 15 species for each operation. The total effort (towing hours for trawling, h) and total catch (kg) of barfin flounder were summed for each 5 minutes of latitude/ longitude ( N, E). Then the catch per unit effort (CPUE, kg/ 100 h) for each 5 minutes of latitude/longitude was calculated based on a database of the fishery records compiled using spreadsheet software (Excel 2007, Microsoft Corp.) at the Fukushima Prefectural Fisheries Experimental Station. Furthermore, a percent frequency distribution of catches for each 50 m depth was calculated based on barfin flounder data in records during Measurement in the market In 2006, market surveys were conducted about three times a week at the Soma- Haragama fish market, the largest fish market in Fukushima Prefecture, to reveal the size distribution of barfin flounder. At the market, total length (TL) (nearest cm) and weight of barfin flounder were measured. No commercial size limitation for barfin flounder has been implemented in Fukushima Prefecture. Two clear modes found in the TL frequency distribution (see Fig. 6) were separated by fitting normal distributions using least-squares method (Aizawa and Takiguchi 1999). Results Annual and seasonal variations of landings Annual changes of commercial landings of barfin flounder at the two fish markets during are presented in Fig. 2. Commercial

4 T. Wada, K. Kamiyama, S. Shimamura, T. Yoshida, T. Kayaba and M. Sasaki landings were found only in Onahama during and fluctuated within a low level [ kg, mean standard deviation (SD) = kg]. The landings in Soma-Haragama were first observed in 2003 when total landings increased sharply to kg. Thereafter, the total landings maintained a higher level and reached the highest record of 1,100.9 kg in Monthly changes of barfin flounder landings at the two markets during are depicted in Fig. 3. Although the monthly absolute value of the landings (Fig. 3) differed greatly among years depending on the total landings for each year (Fig. 2), the seasonal fluctuation pattern was quite characteristic and similar among years. Almost all catches (92.2% in total) were landed during January- April. Particularly, February (36.1%) and March (31.9%) were the peak months, comprising 68% of the total landings. Almost all landings (99.2%) were caught by trawl fishery. Particularly, offshore trawl fishery operated by larger trawl vessels ( > 15 t) accounted for the highest proportion (94.4%), whereas gillnet fishery (0.6%) and other means (0.1%) comprised a much lower proportion. Fishing grounds of offshore bottom-trawl vessels and depth distributions Geographical distributions of fishing effort (operation hours, h) and CPUEs (kg/100 h) of barfin flounder during are portrayed in Fig. 4. The total fishing effort during the period was 45,018 h. Total catches in the daily fishery records during were kg (2000, 5.1 kg; 2001, 15.9 kg; 2002, 2.3 kg; 2003, 38.7 kg; 2004, 0 kg; 2005, 8.0 kg; 2006, 53.5 kg). Almost all catches in the records were caught during January-April (92.0% in total) with the peak months of February (50.2%) and March (31.7%). Trawling operations were Fig. 2. Annual changes of commercial landings (kg) of barfin flounder in Onahama (black bar) and Soma- Haragama (hatched bar) fish markets. Fishery data for the Onahama fish market for were referred from Wada et al. (2011). Fig. 3. Monthly variations of fishery landings for respective fishing methods in Fukushima Prefecture during J, M, and S on the x-axis respectively represent January, May, and September. Fig. 4. (a) Total operation hours of bottom trawling (h), and (b) catch per unit effort (kg/ 100 h) of barfin flounder by three offshore bottom-trawl vessels during shown for every five minutes of longitude and latitude. Isolines represent depth.

5 Verasper moseri Caught in Southern Tohoku found throughout southern Tohoku with depths of less than 900 m (Fig. 4a). Higher effort was detected from northern Fukushima to southern Miyagi ( N) at depth of less than 100 m. In addition, higher effort was also found for the area off southern Ibaraki ( N) at depths of less than 300 m. In contrast, higher CPUEs of barfin flounder were observed only off Ibaraki ( N) at depths of around 300 m (Fig. 4b). Lower CPUEs were observed off Fukushima (37 00 N, N). Much smaller values were observed off Fukushima at depths of less than 100 m. Percent catches for every 50 m depth are presented in Fig. 5. Although the catches were observed within wide ranges of m depth, higher percentages were found at m depth (86.1% in total), with the peak at 300 m (28.2%). A small peak was found at 100 m depth (4.5%). Mean depth ( SD) was calculated as m. Size frequency distribution in the market The size frequency distribution of barfin flounder landed on Soma-Haragama fish market in 2006 is depicted in Fig. 6. In all, 403 individuals of landed barfin flounder were measured, corresponding to 56.7% (by weight) of total landings in the market in Two clear modes were detected from the size distribution: one large mode around 43 cm TL and another smaller mode around 60 cm TL. These two modes were clearly separated by fitting normal distributions. The peak ( SD) of each distribution was calculated as cm TL and cm TL. The quantity of fish assigned for each mode was estimated respectively as 361 and 42. All the measured barfin flounder have abnormal pigmentation in the blind side. These results indicated that cultured barfin flounder released from Hokkaido or Iwate occupied a much higher proportion among landings because few wild flatfishes show abnormal pigmentation in the blindside (Tomiyama et al. 2008a), and few wild barfin flounder have been caught recently (Andoh et al. 1999). Discussion Our study revealed the geographical distribution of barfin flounder catches throughout southern Tohoku quantitatively (Fig. 4). The geographical distribution can be analyzed because many fishery data of barfin flounder were recorded in the daily fishery records, probably because of the increase of catches (Fig. 2). Almost all the barfin flounder landed on Fukushima were judged as stocked fish according to their abnormal pigmentation in the blind side. Therefore, the increase of commercial landings was unquestionably related to the increase of released seedlings in Hokkaido and Iwate prefectures (Fig. 7). Landings and fishing grounds in southern Tohoku Our study elucidated the fishing season, the geographical distribution of fishing grounds, and Fig. 5. Percent frequency distribution of catches of barfin flounder for every 50 m depth, caught by three offshore bottom-trawl vessels during Fig. 6. Size frequency distribution of barfin flounder landed at the Soma-Haragama fish market in 2006 (grey columns). Two normal distributions fitted to the size distribution are presented with black lines.

6 T. Wada, K. Kamiyama, S. Shimamura, T. Yoshida, T. Kayaba and M. Sasaki Fig. 7. Quantities of release of barfin flounder seedlings in Hokkaido and Iwate prefectures during Data are from the general report published in March 2011 by the National Association for the Promotion of Productive Seas. size distribution of stocked barfin flounder in southern Tohoku. Their specific characteristics were (1) remarkable seasonality of the landings with the peak period during January-April, (2) limited main fishing grounds ( N) at depths of around 300 m, and (3) two size distributions of the landings at around ca. 43 cm and 60 cm TL. We discuss these characteristics in the following paragraphs. The seasonality of landings was striking (Fig. 3). Over 92% of catches were landed during January-April in Although seasonality of landings in Fukushima Prefecture has been observed for some flatfish species (e.g., the congeneric species Verasper variegatus, Wada et al. 2012), no flatfish species except for barfin flounder has shown such remarkable seasonality. Many flatfish species are caught throughout the year, except for the trawl fisheries closed season of July and August (Hirakawa 1978; Shimamura and Igarashi 1999, 2000; Yamada et al. 2006; Yamanobe 2007; Tomiyama et al. 2008b; Chiyokubo 2010). The geographical distribution of fishing grounds and depth distributions are also quite characteristic. Although trawl fisheries operate throughout southern Tohoku (Fig. 4a), the higher CPUEs were only found off Ibaraki Prefecture ( N) at depths of around 300 m (Figs. 4b, 5), corresponding to the upper continental slope near the southernmost part of the First Oyashio Intrusion (Shimizu et al. 2001). The catches also occurred off Fukushima, but the CPUEs were much lower (Fig. 4b). These results indicate that some fish released in Hokkaido or Iwate prefectures congregated to deeper waters around southernmost Tohoku mainly during January- April. These specific geographical and depth distributions were quite different from those of other flatfishes in southern Tohoku. Many flatfish species were caught from broader latitudes in southern Tohoku with wider depth ranges in accordance with their seasonal migration cycles (e.g., feeding migration and spawning migration). Furthermore, the depth distribution pattern in southern Tohoku differed greatly from those of young barfin flounder around the release areas in Hokkaido and Iwate prefectures. Cultured seedlings were released mainly at shallower areas at depths less than 10 m, and younger fish (age-0 to age-2 fish) remained in coastal areas to achieve high growth performance by feeding mainly on abundant epifaunal crustaceans and fish of several kinds (Watanabe et al. 2001; Watanabe and Minami 2003; Yoshida et al. 2007a). The size distribution of landings was also characteristic (Fig. 6). Two clear modes separated at around 50 cm TL were detected. Furthermore, fish smaller than 30 cm TL, which is the target size for fishing around the release areas (Watanabe et al. 2001; Sasaki and Nakai 2006), was not found irrespective of high-frequency market surveys in the Soma- Haragama fish market. Reportedly, females of released barfin flounder grew faster than males, became larger at age-2 or older, and reached over 50 cm TL at age 4 (Mori et al. 1999; Yoshida et al. 2007b). In contrast, few males grew to over 50 cm TL in Hokkaido (Yoshida et al. 2007b, 2008). In addition, sex discrimination of released barfin flounder based on the skin coloration in the blind side (male, yellow; female, white) was proved with probability of greater than 90% (Misaka and Sasaki 2008). At the Onahama fish market, two descriptive trading names were assigned for barfin flounder: ki-matsukawa (literal translation: yellow barfin flounder, having

7 Verasper moseri Caught in Southern Tohoku yellow body coloration in the blind side) and matsukawa (barfin flounder, having white body coloration in the blind side) (Wada et al. 2011). In association with these pieces of information, the fact that the body coloration on the blind side was mainly white in fish over 50 cm TL and yellow in fish less than 50 cm (S. Shimamura, personal observation, 2006) strongly suggests that the one mode around 43 cm TL comprised males and the other mode around 60 cm TL comprised females. The vastly different quantities of fish assigned for each mode (361 vs. 42) are attributable to the following two reasons. One possibility is that the sex ratio of released cohorts was already biased to males. Actually, the sex ratio of released seedlings and recaptured fish during was reportedly biased to males (ca. 68% in total) in Hokkaido (Takaya et al. 2009b). Another possibility and/or synergetic effect is that initial ages for migration from the waters near the release area to southern Tohoku were older in females, resulting in the male-biased sex ratio because of the longer fishing mortality for remaining females than for migratory males. A large share of the landings (Fig. 6) exceeded the estimated smallest size at maturation (male, > 33.8 cm TL; female, > 45.3 cm TL) (Yoshida et al. 2008). The main fishing season (Fig. 3) accorded well with the spawning season in captivity (mainly March-April) (Kayaba 2005) and also with the season when commercial landings had decreased drastically in Hokkaido (Yoshida et al. 2011), where no specific spawning area of stocked barfin flounder has yet been detected (Kayaba 2009). These results suggest that the congregation of barfin flounder around southernmost Tohoku at depths of around 300 m (Figs. 4, 5) might be related to spawning events. Detailed assessments of the maturation status of the landings in southern Tohoku are necessary as a next step for this research. Acknowledgments This study was conducted as part of a research project Research and Development Projects for Application in Promoting New Policy of Agriculture, Forestry, and Fisheries, funded by the Ministry of Agriculture, Forestry, and Fisheries, Japan. We are grateful to Dr. T. Matsubara and to the members of this project for their help in promoting this study. References Aizawa, Y. and N. Takiguchi (1999) Consideration of the methods for estimating the age-composition from the length frequency data with MS-Excel. Bull. Jpn. Soc. Fish. Oceanogr., 63, (in Japanese). Amaoka, K., K. Nakaya and M. Yabe (1995) Barfin flounder Verasper moseri Jordan et Gilbert. In The Fishes of Northern Japan (ed. By K. Amaoka, K. Nakaya and M. Yabe), Kita-Nihon Kaiyo Center, p. 306 (in Japanese). Andoh, T., K. Watanabe and T. Matsubara (1999) Problems and perspectives in stock enhancement of barfin flounder (review). Bull. Hokkaido Natl. Fish. Res. Inst., 63, (in Japanese with English abstract). Chiyokubo, T. (2010) Recent catch of the shotted halibut Eopsetta grigorjewi off Fukushima. Bull. Fukushima Pref. Fish. Exp. Stn., 15, 1-9 (in Japanese). Hirakawa, H. (1978) Studies on the fishing ground of small trawl nets in Fukushima. Bull. Fukushima Pref. Fish. Exp. Stn., 5, (in Japanese). Kayaba, T. (2005) Studies on techniques of reliable production of seed of barfin flounder Verasper moseri. Sci. Rep. Hokkaido Fish. Exp. Stn., 69, (in Japanese with English abstract). Kayaba, T. (2009) Estimation of spawning ecology of a rare flatfish, barfin flounder. Kushirosuishi-dayori, 90, 3-5 (in Japanese). Minami, T. (1998) Barfin flounder. In Data Book for Rare Wild Aquatic Organisms in Japan (ed. By Fishery Agency of Japan), Japan Fisheries Resource Conservation Association, pp (in Japanese). Misaka, T. and M. Sasaki (2008) Sex discrimination of landed barfin flounder from the body coloration in the blind side. Kushirosuishi-dayori, 89, 8-11 (in Japanese). Mori, T., S. Saito, T. Sugimoto and T. Kayaba (1999) Differences in growth rate among sexes of barfin flounder (Verasper moseri). Sci. Rep. Hokkaido Fish. Exp. Stn., 56, (in Japanese with English abstract). Sasaki, M. (1997) Fishery status and ecology of barfin flounder in the waters of Hidaka and Iburi areas, southwestern Hokkaido. Hokusuishi-dayori, 38, 7-12 (in Japanese). Sasaki, R. and K. Nakai (2006) Mark-recapture experiment using barfin flounder, Verasper moseri on the coast of Iwate Prefecture. Saibai Giken, 34, 1-6 (in Japanese with English abstract). Shimamura, S. and S. Igarashi (1999) Flatfish, Dexistes rikuzenius ( Jordan et Starks), caught in the coast of Fukushima region. Bull. Fukushima Pref. Fish. Exp. Stn., 8, (in Japanese). Shimamura, S. and S. Igarashi (2000) Flatfish, Tanakius

8 T. Wada, K. Kamiyama, S. Shimamura, T. Yoshida, T. Kayaba and M. Sasaki kitaharai ( Jordan et Starks), caught in the coast of Fukushima region. Bull. Fukushima Pref. Fish. Exp. Stn., 9, (in Japanese). Shimizu, Y., I. Yasuda and S. I. Ito (2001) Distribution and circulation of the coastal Oyashio Intrusion. J. Phys. Oceanogr., 31, Takaya, Y. (2011) Recent situations about barfin flounder. Hokusuishi-dayori, 54, 1-5 (in Japanese). Takaya, Y., H. Yoshida, T. Matsuda and O. Murakami (2009a) Migration of hatchery-reared barfin flounder Verasper moseri with their age in the Pacific coastal waters off southwestern Hokkaido, Japan (Short paper). Sci. Rep. Hokkaido Fish. Exp. Stn., 75, (in Japanese). Takaya, Y., O. Murakami, H. Yoshida, T. Kayaba and T. Matsuda (2009b) Sex ratio of released and recaptured barfin flounder Verasper moseri in the Pacific coastal waters off southwestern Hokkaido, Japan (Short paper). Sci. Rep. Hokkaido Fish. Exp. Stn., 75, (in Japanese). Tomiyama, T., T. Mizuno, M. Watanabe, T. Fujita and G. Kawata (2008a) Patterns and frequency of hypermelanosis on the blind side in wild Japanese flounder. Nippon Suisan Gakkaishi, 74, (in Japanese with English abstract). Tomiyama, T., M. Watanabe and T. Fujita (2008b) Community-based stock enhancement and fisheries management of the Japanese flounder in Fukushima, Japan. Rev. Fish. Sci., 16, Wada, T., K. Kamiyama, T. Kayaba and M. Sasaki (2011) Commercial landings and fishing areas of a depleted flounder Verasper moseri and other flatfish species in the Joban area, eastern Japan, during Aquaculture Sci., 59, (in Japanese with English abstract). Wada, T., K. Kamiyama, S. Shimamura, T. Mizuno and Y. Nemoto (2012) Effectiveness of stock enhancement of a rare species, spotted halibut Verasper variegatus, in Fukushima, Japan. Aquaculture, , Watanabe, K. and T. Minami (2003) Feeding habits of released barfin flounder Verasper moseri reared in a hatchery in Akkeshi Bay, eastern Hokkaido, Japan. Nippon Suisan Gakkaishi, 69, 3-9 (in Japanese with English abstract). Watanabe, K., S. Suzuki and A. Nishiki (2001) Migration, growth and stock enhancement effects of hatcheryreared barfin flounder Verasper moseri juveniles released in Akkeshi Bay. Saibai Giken, 28, (in Japanese). Yamada, M., Y. Ueda, T. Hattori, A. Yamanobe and T. Yoshida (2006) Biology and stock assessment of flathead flounder Hippoglossoides dubius in the Joban waters. Bull. Fukushima Pref. Fish. Exp. Stn., 13, (in Japanese). Yamanobe, A. (2007) Recent catch history and fluctuation in recruitment of the brown sole, Pleuronectes herzensteini, off Fukushima Prefecture. Bull. Fukushima Pref. Fish. Exp. Stn., 14, 1-9 (in Japanese). Yoshida, H., Y. Takaya and T. Matsuda (2007a) Distribution and feeding habits of age-0 barfin flounder, Verasper moseri, released in Funka Bay, southwestern Hokkaido. Saibai Giken, 35, 5-10 (in Japanese with English abstract). Yoshida, H., Y. Takaya and T. Matsuda (2007b) Growth of hatchery-reared barfin flounder Verasper moseri in the Pacific coastal waters off southwestern Hokkaido (Short paper). Sci. Rep. Hokkaido Fish. Exp. Stn., 72, (in Japanese). Yoshida, H., Y. Takaya and T. Matsuda (2008) Spawning season, mature age and length of released barfin flounder Verasper moseri in the Pacific coastal waters off south-western Hokkaido. J. Fish. Technol., 1, (in Japanese with English abstract). Yoshida, H., Y. Takaya and T. Matsuda (2011) Age, total length and season of artificially reared barfin flounders, Verasper moseri, released from Hokkaido and recaptured in waters off eastern Honshu from Aomori to Ibaraki prefectures. J. Fish. Technol., 3, (in Japanese with English abstract) N 300 m % 43 cm 60 cm

Stock Abundance and Size Compositions of the Neon Flying Squid in the Central North Pacific Ocean during

Stock Abundance and Size Compositions of the Neon Flying Squid in the Central North Pacific Ocean during Stock Abundance and Size Compositions of the Neon Flying Squid in the Central North Pacific Ocean during 1979 1998 Akihiko Yatsu 1, Junta Mori 1, Hiroyuki Tanaka 1, Tomowo Watanabe 1, Kazuya Nagasawa 1,

More information

Occurrence pattern of white-spotted conger larva, Conger myriaster, in the southern Tohoku area

Occurrence pattern of white-spotted conger larva, Conger myriaster, in the southern Tohoku area Bull. Jpn. Soc. Fish. Oceanogr. 70(1) 10 15, 2006 Occurrence pattern of white-spotted conger larva, Conger myriaster, in the southern Tohoku area Satoshi KATAYAMA 1 and Yugo SHIMIZU 2 To reveal the occurrence

More information

EFFECTS OF IMPORT AND INVENTORY AMOUNTS ON CHANGES IN WHOLESALE PRICES OF SALMON IN JAPAN

EFFECTS OF IMPORT AND INVENTORY AMOUNTS ON CHANGES IN WHOLESALE PRICES OF SALMON IN JAPAN EFFECTS OF IMPORT AND INVENTORY AMOUNTS ON CHANGES IN WHOLESALE PRICES OF SALMON IN JAPAN Ikutaro Shimizu National Salmon Resources Center, ikutaro@salmon.affrc.go.jp ABSTRACT Japanese salmon fishery is

More information

STOCK STATUS OF SOUTHERN BLUEFIN TUNA

STOCK STATUS OF SOUTHERN BLUEFIN TUNA 7 th Expert Consultation on Indian Ocean Tunas, Victoria, Seychelles, 9-14 November, 1998 STOCK STATUS OF SOUTHERN BLUEFIN TUNA Tsuji, S. 1 Introduction The Commission for the Conservation of Southern

More information

West Coast Rock Lobster. Description of sector. History of the fishery: Catch history

West Coast Rock Lobster. Description of sector. History of the fishery: Catch history West Coast Rock Lobster Description of sector History of the fishery: The commercial harvesting of West Coast rock lobster commenced in the late 1800s, and peaked in the early 1950s, yielding an annual

More information

ASMFC Stock Assessment Overview: Red Drum

ASMFC Stock Assessment Overview: Red Drum Purpose The purpose of this document is to improve the understanding and transparency of the Commission s stock assessment process and results. It is the first of several that will be developed throughout

More information

Gulf of St. Lawrence (4RST) Greenland Halibut

Gulf of St. Lawrence (4RST) Greenland Halibut Fisheries and Oceans Science Pêches et Océans Sciences DFO Science Stock Status Report A4-3 () 52 5 48 46 Québec Nouveau-Brunswick Québec 4T 4S 4R 3Pn 4Vn Terre-Neuve 3Ps 3K 3L Gulf of St. Lawrence (4RST)

More information

Toshitame INTRODUCTION

Toshitame INTRODUCTION 10 2005 Sea Farming of Red Sea Bream Pagrus major Temmick et Schlegel In waters off Kanagawa Prefecture Japan with Special eference to Stock Enhancement Effect Toshitame IMAI Technical activities are reviewed

More information

FISHERIES MANAGEMENT UNDER SPECIES ALTERNATION: CASE OF THE PACIFIC PURSE SEINER OFF JAPAN

FISHERIES MANAGEMENT UNDER SPECIES ALTERNATION: CASE OF THE PACIFIC PURSE SEINER OFF JAPAN FISHERIES MANAGEMENT UNDER SPECIES ALTERNATION: CASE OF THE PACIFIC PURSE SEINER OFF JAPAN Mitsutaku Makino, Fisheries Research Agency, Japan, mmakino@affrc.go.jp Takumi Mitani, Fisheries Research Agency,

More information

The fishery for jack mackerel in the Eastern Central Pacific by European trawlers in 2008 and 2009

The fishery for jack mackerel in the Eastern Central Pacific by European trawlers in 2008 and 2009 Eighth International Meeting: SWG: Jack Mackerel Sub-Group SP-08-SWG-JM-01 The fishery for jack mackerel in the Eastern Central Pacific by European trawlers in 2008 and 2009 Ad Corten Corten Marine Research

More information

ASMFC Stock Assessment Overview: Red Drum

ASMFC Stock Assessment Overview: Red Drum Introduction This document presents a summary of the 217 stock assessments for red drum. These assessments were initially conducted through the Southeast Data, Assessment and Review (SEDAR) process using

More information

Maturity and Spawning of the Small Yellow Croaker, Larimichthys polyactis

Maturity and Spawning of the Small Yellow Croaker, Larimichthys polyactis Maturity and Spawning of the Small Yellow Croaker, Larimichthys polyactis Hyunjung Kang Kang 1, Yeonghye Kim 1, Jinkoo Kim 2, Sungyeon Kim 1, Sukgeun Jung 1, Dongwoo Lee 1 National Fisheries Research Development

More information

DRAFT. A minor change in the estimation of length composition data of Japanese troll fisheries. November 2015 ISC/15/PBFWG-2/03

DRAFT. A minor change in the estimation of length composition data of Japanese troll fisheries. November 2015 ISC/15/PBFWG-2/03 ISC/15/PBFWG-2/03 A minor change in the estimation of length composition data of Japanese troll fisheries Hiromu Fukuda 1, Hitomi Uyama 1, Kazuhiro Oshima 1 1 National Research Institute of Far Seas Fisheries

More information

Size and spatial distribution of the blue shark, Prionace glauca, caught by Taiwanese large-scale. longline fishery in the North Pacific Ocean

Size and spatial distribution of the blue shark, Prionace glauca, caught by Taiwanese large-scale. longline fishery in the North Pacific Ocean 1 ISC/16/SHARKWG-1/21 Size and spatial distribution of the blue shark, Prionace glauca, caught by Taiwanese large-scale longline fishery in the North Pacific Ocean Kwang-Ming Liu 1,2, Kuang-Yu Su 1,2,

More information

SOUTH PACIFIC COMMISSION. TWENTY-SECOND REGIONAL TECHNICAL MEETING ON FISHERIES (Noumea, New Caledonia, 6-10 August 1990)

SOUTH PACIFIC COMMISSION. TWENTY-SECOND REGIONAL TECHNICAL MEETING ON FISHERIES (Noumea, New Caledonia, 6-10 August 1990) Page 1 ORIGINAL : ENGLISH SOUTH PACIFIC COMMISSION TWENTY-SECOND REGIONAL TECHNICAL MEETING ON FISHERIES (Noumea, New Caledonia, 6-10 August 1990) STOCK STATUS OF SKIPJACK TUNA IN THE WESTERN TROPICAL

More information

The Hague, Kingdom of the Netherlands October 2016 SC The European Union Annual report

The Hague, Kingdom of the Netherlands October 2016 SC The European Union Annual report 4 th Meeting of the Scientific Committee The Hague, Kingdom of the Netherlands 1-1 October 216 SC-4-1 The European Union Annual report Ad Corten Consultant Dutch Ministry of Economic Affairs 1 National

More information

Some Biological Parameters of Bigeye and Yellowfin Tunas Distributed in Surrounding Waters of Taiwan

Some Biological Parameters of Bigeye and Yellowfin Tunas Distributed in Surrounding Waters of Taiwan SCTB15 Working Paper RG-1 Some Biological Parameters of Bigeye and Yellowfin Tunas Distributed in Surrounding Waters of Taiwan Shyh-Bin Wang 1, Feng-Chen Chang 1, Shui-Hei Wang 1, and Chin-Lau Kuo 2 1

More information

!"#$%&'() Mola mola *+,+-./

!#$%&'() Mola mola *+,+-./ Mola mola 2008 Summary A study on the reproductive biology of ocean sunfish Mola mola Toshiyuki akatsubo 1. Introduction Ocean sunfish, Mola mola, which belongs to the family Molidae in the order Tetraodontiformes,

More information

Monitoring the length structure of commercial landings of albacore tuna during the fishing year

Monitoring the length structure of commercial landings of albacore tuna during the fishing year SCTB15 Working Paper ALB-5 Monitoring the length structure of commercial landings of albacore tuna during the 2001 2002 fishing year Linda Griggs National Institute of Water and Atmospheric Research Ltd.

More information

HADDOCK ON THE SOUTHERN SCOTIAN SHELF AND IN THE BAY OF FUNDY (DIV. 4X/5Y)

HADDOCK ON THE SOUTHERN SCOTIAN SHELF AND IN THE BAY OF FUNDY (DIV. 4X/5Y) Canadian Science Advisory Secretariat Science Advisory Report 26/47 HADDOCK ON THE SOUTHERN SCOTIAN SHELF AND IN THE BAY OF FUNDY (DIV. 4X/5Y) Context Haddock (Melanogrammus aeglefinus) are found on both

More information

Planning of Egg Stock Assessments According to Reproductive Characteristics of Japanese Anchovy

Planning of Egg Stock Assessments According to Reproductive Characteristics of Japanese Anchovy 41 Planning of Egg Stock Assessments According to Reproductive Characteristics of Japanese Anchovy Yoshinari TSURUTA Abstract In order to enhance the accuracy of the Egg Production Method applied for Japanese

More information

Shrimp of the Estuary and the Gulf of St. Lawrence

Shrimp of the Estuary and the Gulf of St. Lawrence DFO Science Stock Status Report C4-6 54 52 North Shore Latitude 5 48 12 New Brunswick 1 Gaspé Peninsula Anticosti P.E.I. 9 8 Newfoundland Shrimp of the Estuary and the Gulf of St. Lawrence 46 44 Nova Scotia

More information

University of Miami Rosenstiel School of Marine and Atmospheric Science. Billfish Research Program

University of Miami Rosenstiel School of Marine and Atmospheric Science. Billfish Research Program University of Miami Rosenstiel School of Marine and Atmospheric Science Billfish Research Program 2011-2013 UNIVERSITY OF MIAMI Billfish Science Laboratory: RESEARCH FOCUS Uses advanced remote sensing

More information

Atsuko YAMAGUCHI. Since the catches of these fish decrease as the waters, including those around western Kyushu and

Atsuko YAMAGUCHI. Since the catches of these fish decrease as the waters, including those around western Kyushu and Atsuko YAMAGUCHI distributions, feeding habits, reproductive behavior, off the coast of Nagasaki, western Kyushu. It is growth, migration, population structure, and other relatively large biological aspects

More information

SCIENTIFIC COMMITTEE SIXTH REGULAR SESSION August 2010 Nuku alofa, Tonga

SCIENTIFIC COMMITTEE SIXTH REGULAR SESSION August 2010 Nuku alofa, Tonga SCIENTIFIC COMMITTEE SIXTH REGULAR SESSION 1-19 August 21 Nuku alofa, Tonga Recent status of Japanese skipjack fishery in the vicinity of Japan WCPFC-SC6-21/SA- WP-7 K. Uosaki, H. Kiyofuji, Y. Hashimoto,

More information

SC China s Annual report Part II: The Squid Jigging Fishery Gang Li, Xinjun Chen and Bilin Liu

SC China s Annual report Part II: The Squid Jigging Fishery Gang Li, Xinjun Chen and Bilin Liu 3 rd Meeting of the Scientific Committee Port Vila, Vanuatu 28 September - 3 October 215 SC-3-9 China s Annual report Part II: The Squid Jigging Fishery Gang Li, Xinjun Chen and Bilin Liu National Report

More information

Map Showing NAFO Management Units

Map Showing NAFO Management Units Map Showing NAFO Management Units Unique biological characteristics dark coloration on both sides compared to almost all other flatfish species left eye not fully migrated giving it an unusually wide

More information

Species Profile: Red Drum Benchmark Assessment Finds Resource Relatively Stable with Overfishing Not Occurring

Species Profile: Red Drum Benchmark Assessment Finds Resource Relatively Stable with Overfishing Not Occurring Red Drum Sciaenops ocellatus Management Unit: New Jersey - Florida Interesting Facts: * The name is derived from their color and the fact that during spawning time males produce a drum-like noise by vibrating

More information

REVIEW OF BIGEYE TUNA CATCH INCLUDING FISH SIZE BY JAPANESE LONGLINE FISHERY IN THE ATLANTIC OCEAN

REVIEW OF BIGEYE TUNA CATCH INCLUDING FISH SIZE BY JAPANESE LONGLINE FISHERY IN THE ATLANTIC OCEAN 1. Introduction Longline is the only tuna-fishing gear deployed by Japan at present in the Atlantic Ocean. Other two types of fishery, baitboat and purse seine fisheries, stopped fishing in the Atlantic

More information

6 th Meeting of the Scientific Committee Puerto Varas, Chile, 9-14 September SC6-Doc15 The Russian Federation s Annual Report

6 th Meeting of the Scientific Committee Puerto Varas, Chile, 9-14 September SC6-Doc15 The Russian Federation s Annual Report 6 th Meeting of the Scientific Committee Puerto Varas, Chile, 9-14 September 2018 SC6-Doc15 The Russian Federation s Annual Report National report of the Russian Federation to the SPRFMO Science Working

More information

ASSESSMENT OF SHRIMP STOCKS IN THE ESTUARY AND GULF OF ST. LAWRENCE IN 2011

ASSESSMENT OF SHRIMP STOCKS IN THE ESTUARY AND GULF OF ST. LAWRENCE IN 2011 Canadian Science Advisory Secretariat Science Advisory Report 212/6 ASSESSMENT OF SHRIMP STOCKS IN THE ESTUARY AND GULF OF ST. LAWRENCE IN 211 Figure 1. Shrimp fishing areas in the Estuary and Gulf of

More information

Stock characteristics, fisheries and management of Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Northeast Arctic

Stock characteristics, fisheries and management of Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Northeast Arctic The 10 th Norwegian Russian Symposium Stock characteristics, fisheries and management of Greenland halibut (Reinhardtius hippoglossoides (Walbaum)) in the Northeast Arctic by Kjell H. Nedreaas (IMR) &

More information

SCIENTIFIC COUNCIL MEETING JUNE Assessment of Demersal Redfish in NAFO Subarea 1

SCIENTIFIC COUNCIL MEETING JUNE Assessment of Demersal Redfish in NAFO Subarea 1 NOT TO BE CITED WITHOUT PRIOR REFERENCE TO THE AUTHOR(S) Northwest Atlantic Fisheries Organization Serial No. N5126 NAFO SCR Doc. 5/4 SCIENTIFIC COUNCIL MEETING JUNE 25 Assessment of Demersal Redfish in

More information

2013 Annual Report on Aquaculture in Japan (Draft)

2013 Annual Report on Aquaculture in Japan (Draft) 2013 Annual Report on Aquaculture in Japan (Draft) UJNR Japan Panel 1. Introduction This report showed the latest topics in aquaculture, trends in production volume of major aquaculture species, and the

More information

Occurrence of Myxobolus arcticus and M. neurobius (Myxozoa: Myxosporea) in Masu Salmon Oncorhynchus masou from Northern Japan

Occurrence of Myxobolus arcticus and M. neurobius (Myxozoa: Myxosporea) in Masu Salmon Oncorhynchus masou from Northern Japan Scientific Reports of the Hokkaido Salmon Hatchery No. 49: 35-, March 1995 Occurrence of Myxobolus arcticus and M. neurobius (Myxozoa: Myxosporea) in Masu Salmon Oncorhynchus masou from Northern Japan

More information

ASSESSMENT OF THE WEST COAST OF NEWFOUNDLAND (DIVISION 4R) HERRING STOCKS IN 2011

ASSESSMENT OF THE WEST COAST OF NEWFOUNDLAND (DIVISION 4R) HERRING STOCKS IN 2011 Canadian Science Advisory Secretariat Science Advisory Report 212/24 ASSESSMENT OF THE WEST COAST OF NEWFOUNDLAND (DIVISION 4R) HERRING STOCKS IN 211 Context Figure 1. Map of unit areas of NAFO Division

More information

Cod in the Northern Gulf of St. Lawrence

Cod in the Northern Gulf of St. Lawrence DFO Sciences Stock Status Report A4-1 (1998) 52. 51. 5. Latitude 49. 48. 47. 4S 4R 3Pn Background Cod in the northern Gulf of (Divisions 3Pn, 4RS) undertake distant annual migrations. In winter, the fish

More information

SMOOTH HAMMERHEAD SHARK (HHS)

SMOOTH HAMMERHEAD SHARK (HHS) SMOOTH HAMMERHEAD SHARK (HHS) (Sphyrna zygaena) HHS1 1. FISHERY SUMMARY Smooth hammerhead sharks (Sphyrna zygaena) are not currently managed under the QMS. No assigned fishing allowances exist. However,

More information

Southern Gulf of St. Lawrence (4T) Herring

Southern Gulf of St. Lawrence (4T) Herring Fisheries Pêches and Oceans et Océans DFO Science Stock Status B3-1 (22) Southern Gulf of St. Lawrence (4T) Herring Background Herring are a pelagic species which form schools during feeding and spawning

More information

SHRIMP OF THE ESTUARY AND GULF OF ST. LAWRENCE IN 2004

SHRIMP OF THE ESTUARY AND GULF OF ST. LAWRENCE IN 2004 Canadian Science Advisory Secretariat Science Advisory Report 25/35 SHRIMP OF THE ESTUARY AND GULF OF ST. LAWRENCE IN 24 Figure 1: Shrimp fishing areas in the Estuary and the Gulf of St. Lawrence. Context

More information

Cod distribution and temperature in the North Sea

Cod distribution and temperature in the North Sea ICES mar. Sei. Symp., 198: 244-. 1994 Cod distribution and temperature in the North Sea Henk Heessen and Niels Daan Heessen, H. J. L., and Daan, N. 1994. Cod distribution and temperature in the North Sea.

More information

DRAFT. Estimation of catch at size of Pacific bluefin tuna caught by. Japanese set net fisheries: Updated up to 2014 fishing year

DRAFT. Estimation of catch at size of Pacific bluefin tuna caught by. Japanese set net fisheries: Updated up to 2014 fishing year Estimation of catch at size of Pacific bluefin tuna caught by Japanese set net fisheries: Updated up to 2014 fishing year Osamu Sakai, Yuko Hiraoka, Hiromu Fukuda, and Kazuhiro Oshima National Research

More information

Changes in Abundance and Spatial Distribution of Southern Bluefin Tuna

Changes in Abundance and Spatial Distribution of Southern Bluefin Tuna Changes in Abundance and Spatial Distribution of Southern Bluefin Tuna Tom Polacheck April 2008 Acknowledgements Paige Eveson Dale Kolody Marinelle Basson Bill Hearn John Gunn Sophie Bestley Alistair Hobday

More information

Nancy E. Kohler, Danielle Bailey, Patricia A. Turner, and Camilla McCandless SEDAR34-WP-25. Submitted: 10 June 2013

Nancy E. Kohler, Danielle Bailey, Patricia A. Turner, and Camilla McCandless SEDAR34-WP-25. Submitted: 10 June 2013 Mark/Recapture Data for the Atlantic Sharpnose Shark (Rhizoprionodon terranovae), in the Western North Atlantic from the NEFSC Cooperative Shark Tagging Program Nancy E. Kohler, Danielle Bailey, Patricia

More information

Year Avg. TAC Can Others Totals

Year Avg. TAC Can Others Totals SKATE IN DIVISIONS 3L, 3N, 3O AND SUBDIVISION 3Ps Background There are 8 to 1 species of skate in the waters around Newfoundland. Of these, thorny skate (Raja radiata) is by far the most common, comprising

More information

PACIFIC BLUEFIN TUNA STOCK ASSESSMENT

PACIFIC BLUEFIN TUNA STOCK ASSESSMENT PACIFIC BLUEFIN TUNA STOCK ASSESSMENT SUMMARY 19-21 December 2012 Webinar PACIFIC BLUEFIN TUNA STOCK ASSESSMENT SUMMARY 1. Stock Identification and Distribution Pacific bluefin tuna (Thunnus orientalis)

More information

Flounder stock enhancement in Miyako Bay, Japan

Flounder stock enhancement in Miyako Bay, Japan 171 Flounder stock enhancement in Miyako Bay, Japan Hiroyuki Okouchi National Center for Stock Enhancement (formerly the Japan Sea-Farming Association) Miyako Station, 4-9-1 Sakiyama, Miyako, Iwate, 027-0097

More information

THORNY SKATE IN DIVISIONS 3L, 3N, 3O AND SUBDIVISION 3Ps

THORNY SKATE IN DIVISIONS 3L, 3N, 3O AND SUBDIVISION 3Ps Newfoundland and Labrador Region Stock Status Report 2003/023 stomachs of skate captured in the vicinity of commercial fisheries. THORNY SKATE IN DIVISIONS 3L, 3N, 3O AND SUBDIVISION 3Ps Background There

More information

Advice June 2012

Advice June 2012 2.4.1 Advice June 212 ECOREGION STOCK Iceland and East Greenland Beaked redfish (Sebastes mentella) in Subareas V, XII, and XIV and NAFO Subareas 1+2 (Deep pelagic stock > 5 m) Advice for 213 The advice

More information

SMALL BOAT TUNA LONGLINE FISHERY NORTH-WEST COAST OF SRI LANKA R. Maldeniya

SMALL BOAT TUNA LONGLINE FISHERY NORTH-WEST COAST OF SRI LANKA R. Maldeniya SMALL BOAT TUNA LONGLINE FISHERY NORTH-WEST COAST OF SRI LANKA R. Maldeniya National Aquatic Resources Agency Crow Island, Colombo 5 Sri Lanka INTRODUCTION Studies made by Sivasubramanium (97) and Maldeniya

More information

Countermeasures against Alien Fishes (Largemouth Bass and Bluegill) in Lake Biwa

Countermeasures against Alien Fishes (Largemouth Bass and Bluegill) in Lake Biwa 79 Countermeasures against Alien Fishes (Largemouth Bass and ) in Lake Biwa Atsuhiko IDE * and Shinsuke SEKI * Abstract Lake Biwa is one of the world's most ancient lakes, with an origin going back four

More information

VERTICAL DISTRIBUTION OF WALLEYE POLLOCK JUVENILES BEFORE AND AFTER THE PERIOD OF TRANSITION FOR FEEDING IN FUNKA BAY, HOKKAIDO, JAPAN

VERTICAL DISTRIBUTION OF WALLEYE POLLOCK JUVENILES BEFORE AND AFTER THE PERIOD OF TRANSITION FOR FEEDING IN FUNKA BAY, HOKKAIDO, JAPAN Journal of Marine Science and Technology, Vol. 19, No. 3, pp. 279-286 (211) 279 VERTICAL DISTRIBUTION OF WALLEYE POLLOCK JUVENILES BEFORE AND AFTER THE PERIOD OF TRANSITION FOR FEEDING IN FUNKA BAY, HOKKAIDO,

More information

STUDY PERFORMANCE REPORT

STUDY PERFORMANCE REPORT STUDY PERFORMANCE REPORT State: Michigan Project No.: F-81-R-3 Study No.: 491 Title: Evaluation of lake sturgeon Acipenser fulvescens populations in the St. Clair River and Lake St. Clair Period Covered:

More information

A Combined Recruitment Index for Demersal Juvenile Cod in NAFO Divisions 3K and 3L

A Combined Recruitment Index for Demersal Juvenile Cod in NAFO Divisions 3K and 3L NAFO Sci. Coun. Studies, 29: 23 29 A Combined Recruitment Index for Demersal Juvenile Cod in NAFO Divisions 3K and 3L David C. Schneider Ocean Sciences Centre, Memorial University St. John's, Newfoundland,

More information

STATUS OF EXPLOITED MARINE FISHERY RESOURCES OF INDIA

STATUS OF EXPLOITED MARINE FISHERY RESOURCES OF INDIA STATUS OF EXPLOITED MARINE FISHERY RESOURCES OF INDIA Editors M. Mohan Joseph and A.A. Jayaprakash CENTRAL MARINE FISHERIES RESEARCH INSTITUTE (Indian Council of Agricultural Research) Post Box No. 1603,

More information

Assessment of the Japanese sardine (Sardinops melanostictus) stock in the northwestern Pacific for Japanese management system

Assessment of the Japanese sardine (Sardinops melanostictus) stock in the northwestern Pacific for Japanese management system Assessment of the Japanese sardine (Sardinops melanostictus) stock in the northwestern Pacific for Japanese management system Hiroshi NISHIDA, Masayuki NOTO, Atsushi KAWABATA and Chikako WATANABE National

More information

A REVIEW AND EVALUATION OF NATURAL MORTALITY FOR THE ASSESSMENT AND MANAGEMENT OF YELLOWFIN TUNA IN THE EASTERN PACIFIC OCEAN

A REVIEW AND EVALUATION OF NATURAL MORTALITY FOR THE ASSESSMENT AND MANAGEMENT OF YELLOWFIN TUNA IN THE EASTERN PACIFIC OCEAN A REVIEW AND EVALUATION OF NATURAL MORTALITY FOR THE ASSESSMENT AND MANAGEMENT OF YELLOWFIN TUNA IN THE EASTERN PACIFIC OCEAN Mark N. Maunder and Alex Aires-da-Silva Outline YFT history Methods to estimate

More information

Recruitment processes of jack mackerel (Trachurus

Recruitment processes of jack mackerel (Trachurus Recruitment processes of jack mackerel (Trachurus japonicus) ) in the East China Sea (ECS) in relation to environmental conditions Chiyuki Sassa 1, Youichi Tsukamoto 1, Yoshinobu Konishi 1* Songguang Xie

More information

Yearly fluctuations of stock-recruitment relationships of benthic fish popu1ations at the Tsushima strait and adjacent waters

Yearly fluctuations of stock-recruitment relationships of benthic fish popu1ations at the Tsushima strait and adjacent waters 研究会記録 Journal of National Fisheries University 64 ( 4) 273-278(2016) Yearly fluctuations of stock-recruitment relationships of benthic fish popu1ations at the Tsushima strait and adjacent waters Chifumi

More information

Cedar Lake Comprehensive Survey Report Steve Hogler and Steve Surendonk WDNR-Mishicot

Cedar Lake Comprehensive Survey Report Steve Hogler and Steve Surendonk WDNR-Mishicot Cedar Lake- 2006 Comprehensive Survey Report Steve Hogler and Steve Surendonk WDNR-Mishicot ABSTRACT Cedar Lake is a 142 acre lake located in the southwest corner of Manitowoc County. It is a seepage lake

More information

Linkages between coastal and open ocean habitats of Pacific salmon and small pelagics in the Northwestern and central Pacific

Linkages between coastal and open ocean habitats of Pacific salmon and small pelagics in the Northwestern and central Pacific Linkages between coastal and open ocean habitats of Pacific salmon and small pelagics in the Northwestern and central Pacific Akihiko Yatsu* and Masahide Kaeriyama** * National Research Institute of Fisheries

More information

SC5-Doc13. The European Annual Report. Irek Wojcik, Ad Corten

SC5-Doc13. The European Annual Report. Irek Wojcik, Ad Corten 5 th Meeting of the Scientific Committee Shanghai, China 23-28 September 2017 SC5-Doc13 The European Annual Report Irek Wojcik, Ad Corten National report of the European Union to the 2017 SPRFMO Scientific

More information

3.4.3 Advice June Barents Sea and Norwegian Sea Cod in Subareas I and II (Norwegian coastal waters cod)

3.4.3 Advice June Barents Sea and Norwegian Sea Cod in Subareas I and II (Norwegian coastal waters cod) 3.4.3 Advice June 2013 ECOREGION STOCK Barents Sea and Norwegian Sea Cod in Subareas I and II (Norwegian coastal waters cod) Advice for 2014 ICES advises on the basis of the Norwegian rebuilding plan,

More information

Atlantic croaker, Micropogonias undulatus (Linnaeus, 1766)

Atlantic croaker, Micropogonias undulatus (Linnaeus, 1766) Atlantic croaker, Micropogonias undulatus (Linnaeus, 1766) Although Atlantic croaker occur throughout much of Florida, they are seldom found south of Tampa Bay on the gulf coast or south of the Indian

More information

Behavior and survival of hatchery reared advanced fingerling largemouth bass using radio telemetry. Brandon Thompson

Behavior and survival of hatchery reared advanced fingerling largemouth bass using radio telemetry. Brandon Thompson Behavior and survival of hatchery reared advanced fingerling largemouth bass using radio telemetry Brandon Thompson Florida largemouth bass Micropterus salmoides floridanus Premier freshwater sportfish

More information

Draft. Tom Nishida and Hiroki Yokoi. National Research Institute of Far Seas Fisheries, Fisheries Research Agency, Shimizu, Shizuoka, Japan ABSTRACT

Draft. Tom Nishida and Hiroki Yokoi. National Research Institute of Far Seas Fisheries, Fisheries Research Agency, Shimizu, Shizuoka, Japan ABSTRACT IOTC 26 WPB4 26 Draft Stock assessments of blue marlin (makaira nigricans) in the Indian Ocean using A Stock-Production Model Incorporating Covariates (ASPIC) (95-25) Tom Nishida and Hiroki Yokoi National

More information

Report on Biology, Stock Status and Management of Southern Bluefin Tuna: 2017

Report on Biology, Stock Status and Management of Southern Bluefin Tuna: 2017 Attachment 11 Report on Biology, Stock Status and Management of Southern Bluefin Tuna: 2017 The CCSBT Extended Scientific Committee (ESC) updated the stock assessment and conducted a review of fisheries

More information

During the mid-to-late 1980s

During the mid-to-late 1980s The 2001 Yellow Perch Report by Rick Kubb During the mid-to-late 1980s the yellow perch popula tions in Lake Erie were among the highest on record. Limit catches by fishermen were extremely common during

More information

2016 ANNUAL FISH TRAWL SURVEY REPORT

2016 ANNUAL FISH TRAWL SURVEY REPORT 216 ANNUAL FISH TRAWL SURVEY REPORT The University of Rhode Island Graduate School of Oceanography The Graduate School of Oceanography (GSO) Fish trawl survey began weekly sampling two stations in Narragansett

More information

ASSESSMENT OF HERRING IN THE SOUTHERN GULF OF ST. LAWRENCE (NAFO DIV. 4T)

ASSESSMENT OF HERRING IN THE SOUTHERN GULF OF ST. LAWRENCE (NAFO DIV. 4T) Canadian Science Advisory Secretariat Science Advisory Report 27/5 ASSESSMENT OF HERRING IN THE SOUTHERN GULF OF ST. LAWRENCE (NAFO DIV. 4T) Context The stock area for southern Gulf of St. Lawrence herring

More information

ATLANTIC STATES MARINE FISHERIES COMMISSION. Winter Flounder Abundance and Biomass Indices from State Fishery-Independent Surveys

ATLANTIC STATES MARINE FISHERIES COMMISSION. Winter Flounder Abundance and Biomass Indices from State Fishery-Independent Surveys ATLANTIC STATES MARINE FISHERIES COMMISSION Winter Flounder Abundance and Biomass Indices from State Fishery-Independent Surveys Technical Committee Report to the Winter Flounder Management Board February

More information

SCIENTIFIC COMMITTEE TENTH REGULAR SESSION. Majuro, Republic of the Marshall Islands 6-14 August 2014

SCIENTIFIC COMMITTEE TENTH REGULAR SESSION. Majuro, Republic of the Marshall Islands 6-14 August 2014 SCIENTIFIC COMMITTEE TENTH REGULAR SESSION Majuro, Republic of the Marshall Islands 6-14 August 214 OVERVIEW OF SIZE DATA FOR BIGEYE TUNA CAUGHT BY JAPANESE LONGLINE FISHERY IN THE PACIFIC OCEAN WCPFC-SC1-214/

More information

Tuna [211] 86587_p211_220.indd 86587_p211_220.indd /30/04 12/30/04 4:53:37 4:53:37 PM PM

Tuna [211] 86587_p211_220.indd 86587_p211_220.indd /30/04 12/30/04 4:53:37 4:53:37 PM PM Tuna [] highlights Ocean and Climate Changes The catches of Pacific bluefin tuna and North Pacific albacore tuna have fluctuated considerably from year to year, but no upward or downward trends are apparent

More information

PRELIMINARY ESTIMATES OF BLUE AND MAKO SHARKS BYCATCH AND CPUE OF TAIWANESE LONGLINE FISHERY IN THE ATLANTIC OCEAN

PRELIMINARY ESTIMATES OF BLUE AND MAKO SHARKS BYCATCH AND CPUE OF TAIWANESE LONGLINE FISHERY IN THE ATLANTIC OCEAN PRELIMINARY ESTIMATES OF BLUE AND MAKO SHARKS BYCATCH AND CPUE OF TAIWANESE LONGLINE FISHERY IN THE ATLANTIC OCEAN Kwang-Ming Liu 1, Shoou-Jeng Joung, and Wen-Pei Tsai 3 1 Institute of Marine Affairs and

More information

Long-term dynamics of the greenland halibut population in the Okhotsk Sea

Long-term dynamics of the greenland halibut population in the Okhotsk Sea Long-term dynamics of the greenland halibut population in the Okhotsk Sea Nadezhda ASEEVA Pacific Fisheries Research Center Vladivostok Russia e-mail: aseeva_n@hotmail.com 25 Stock dynamics Stock decreased

More information

Gulf of St. Lawrence (4RST) Greenland Halibut in 2003

Gulf of St. Lawrence (4RST) Greenland Halibut in 2003 Fisheries and Oceans Canada Science Pêches et Océans Canada Sciences Stock Status Report 2004/014 52 50 48 46 Québec Nouveau-Brunswick Québec 4T 4S 4R 3Pn 4Vn Terre-Neuve 3Ps 3K 3L Background Greenland

More information

Southern Gulf of St. Lawrence (4T) Herring

Southern Gulf of St. Lawrence (4T) Herring Stock Status Report 24/23 Southern Gulf of St. Lawrence (4T) Herring Background Herring are a pelagic species which form schools during feeding and spawning periods. Herring in the southern Gulf of St.

More information

The stock of blue whiting has been surveyed for the last three years during the spawning period using the research vessel cg. 0.

The stock of blue whiting has been surveyed for the last three years during the spawning period using the research vessel cg. 0. FiskDir. Skr. Ser. HavUnders., 16: 245-257. ABUNDANCE ESTIMATES OF THE SPAWNING STOCK OF BLUE WHITING (MICR OMESISTIUS PO UTASSOU (RISSO, 1810)) IN THE AREA WEST OF THE BRITISH ISLES IN 1972-1974 By RAMON

More information

Japan s report on Paragraph 13, CMM

Japan s report on Paragraph 13, CMM Japan s report on Paragraph 13, CMM2016-04 1 Introduction: Overview of Japanese PBF fisheries 2 PBF Catch by fishing gear in Japan 1952 1954 1956 1958 1960 1962 1964 1966 1968 1970 1972 1974 1976 1978

More information

Abstract. Introduction

Abstract. Introduction Artificial Reefs Contribute to Marine Resources Enhancement Sadamitsu Akeda National Research Institute of Fisheries Engineering Fisheries Research Agency, Japan email: akeda@fra.affrc.go.jp Abstract When

More information

Fishery, biology and stock assessment of Cynoglossus macrostomus (Norman) off Malabar coast

Fishery, biology and stock assessment of Cynoglossus macrostomus (Norman) off Malabar coast Indian J. Fish., 53(4) : 441-447, Oct.-Dec., 2006 441 Fishery, biology and stock assessment of Cynoglossus macrostomus (Norman) off Malabar coast P.P. MANOJKUMAR Calicut Research Centre of Central Marine

More information

A New Generator for Tsunami Wave Generation

A New Generator for Tsunami Wave Generation Journal of Energy and Power Engineering 10 (2016) 166-172 doi: 10.17265/1934-8975/2016.03.004 D DAVID PUBLISHING Tetsuya Hiraishi 1, Ryokei Azuma 1, Nobuhito Mori 2, Toshihiro Yasuda 2 and Hajime Mase

More information

Serial No. N4859 NAFO SCR Doc. 03/41 SCIENTIFIC COUNCIL MEETING JUNE 2003

Serial No. N4859 NAFO SCR Doc. 03/41 SCIENTIFIC COUNCIL MEETING JUNE 2003 NOT TO BE CITED WITHOUT PRIOR REFERENCE TO THE AUTHOR(S) Northwest Atlantic Fisheries Organization Serial No. N4859 NAFO SCR Doc. 03/41 SCIENTIFIC COUNCIL MEETING JUNE 2003 Results of a Greenland Halibut

More information

GROWTH IN NORMAL AND DISEASED DOVER SOLE POPULATIONS

GROWTH IN NORMAL AND DISEASED DOVER SOLE POPULATIONS Alan J. Mearns and Leslie Harris GROWTH IN NORMAL AND DISEASED DOVER SOLE POPULATIONS To evaluate the health of local populations of Dover sole and to gain insight into the development of the fin erosion

More information

Rockfish Bycatch: Spatial Analysis Using Observer Data in the Aleutian Islands and Bering Sea

Rockfish Bycatch: Spatial Analysis Using Observer Data in the Aleutian Islands and Bering Sea Rockfish Bycatch: Spatial Analysis Using Observer Data in the Aleutian Islands and Bering Sea Prepared for Alaska Marine Conservation Council Prepared by Ecotrust Charles Steinback Sarah Klain DRAFT REPORT

More information

ISC Pacific Bluefin tuna Stock Assessment 2016

ISC Pacific Bluefin tuna Stock Assessment 2016 ISC Pacific Bluefin tuna Stock Assessment 2016 Completed in 2016-Feb. 29 th to 2016-Apr. 12 th at La Jolla, USA ISC Pacific Bluefin tuna Working Group 2016/5/10 San Diego Marriott La Jolla -IATTC SAC 07-

More information

Wave Setup at River and Inlet Entrances Due to an Extreme Event

Wave Setup at River and Inlet Entrances Due to an Extreme Event Proceedings of International Conference on Violent Flows (VF-2007) Organized by RIAM, Kyushu University, Fukuoka, Japan Wave Setup at River and Inlet Entrances Due to an Extreme Event Xuan Tinh Nguyen

More information

Atlantic Salmon Inner Bay of Fundy SFA 22 & part of SFA 23

Atlantic Salmon Inner Bay of Fundy SFA 22 & part of SFA 23 Fisheries Pêches and Oceans et Océans DFO Science Maritimes Region Stock Status Report D3-12 Atlantic Salmon Inner Bay of Fundy Background Atlantic salmon (Salmo salar) of the inner Bay of Fundy rivers

More information

BAIRD'S BEAKED WHALES CAUGHT ON THE COAST OF JAPAN IN RECENT 10 YEARS MASAHARU NISHIWAKI* AND NOBUO OGURO* ABSTRACT

BAIRD'S BEAKED WHALES CAUGHT ON THE COAST OF JAPAN IN RECENT 10 YEARS MASAHARU NISHIWAKI* AND NOBUO OGURO* ABSTRACT BAIRD'S BEAKED WHALES CAUGHT ON THE COAST OF JAPAN IN RECENT 1 YEARS MASAHARU NISHIWAKI* AND NOBUO OGURO* ABSTRACT It seems there has been no sign of decrease on the stock of Baird's beaked whale on the

More information

State of California The Resources Agency DEPARTMENT OF FISH AND GAME. Jerome D. Spratt

State of California The Resources Agency DEPARTMENT OF FISH AND GAME. Jerome D. Spratt State of California The Resources Agency DEPARTMENT OF FISH AND GAME BIOLOGICAL CHARACTERISTICS OF THE GILL NET CATCH FROM THE 1989-90 PACIFIC HERRING, CLUPEA PALLASI, ROE FISHERY IN CALIFORNIA by Jerome

More information

Predictability of Pacific saury fishing grounds in the Northwestern North Pacific using satellite remote sensing data

Predictability of Pacific saury fishing grounds in the Northwestern North Pacific using satellite remote sensing data PICES 14th 5 October 2005 Predictability of Pacific saury fishing grounds in the Northwestern North Pacific using satellite remote sensing data O Toshiyuki Konishi, Hidetada Kiyofuji and Sei-Ichi Saitoh

More information

ASSESSMENT OF THE WEST COAST OF NEWFOUNDLAND (DIVISION 4R) HERRING STOCKS IN 2013

ASSESSMENT OF THE WEST COAST OF NEWFOUNDLAND (DIVISION 4R) HERRING STOCKS IN 2013 Canadian Science Advisory Secretariat Quebec Region Science Advisory Report 214/56 ASSESSMENT OF THE WEST COAST OF NEWFOUNDLAND (DIVISION 4R) HERRING STOCKS IN 213 Quebec 4Ra 4S 4R 4Rc 4Rb U.S.A. (Maine)

More information

What you need to know about juvenile tunas in the Philippines:

What you need to know about juvenile tunas in the Philippines: What you need to know about juvenile tunas in the Philippines: N. Barut National Fisheries Research & Development Institute, BFAR J. Ingles WWF, Coral Triangle Program Stakeholders Consultation Workshop

More information

THE BIOLOGY OF THE PRAWN, PALAEMON

THE BIOLOGY OF THE PRAWN, PALAEMON J. mar. bio!. Ass. U.K. (1959) 38 621-627 Printed in Great Britain 621 THE BOLOGY OF THE PRAWN PALAEMON (=LEANDER) SERRA TU S (PENNANT) BY G. R. FORSTER The Plymouth Laboratory n a recent paper Cole (1958)

More information

Status of Northern Pike and Yellow Perch at Goosegrass Lake, Alberta, 2006

Status of Northern Pike and Yellow Perch at Goosegrass Lake, Alberta, 2006 Status of Northern Pike and Yellow Perch at Goosegrass Lake, Alberta, 2006 CONSERVATION REPORT SERIES The Alberta Conservation Association is a Delegated Administrative Organization under Alberta s Wildlife

More information

Fish Survey Report and Stocking Advice for Loch Milton. (Loch a Mhuilinn), May 2011

Fish Survey Report and Stocking Advice for Loch Milton. (Loch a Mhuilinn), May 2011 Fish Survey Report and Stocking Advice for Loch Milton (Loch a Mhuilinn), May 2011 Jonah Tosney Freshwater Fisheries Biologist Wester Ross Fisheries Trust 1 Loch Milton (Loch a Mhuilinn) Fish Survey Report

More information

Jason Blackburn, Paul Hvenegaard, Dave Jackson, Tyler Johns, Chad Judd, Scott Seward and Juanna Thompson

Jason Blackburn, Paul Hvenegaard, Dave Jackson, Tyler Johns, Chad Judd, Scott Seward and Juanna Thompson Alberta Conservation Association (ACA) Date: 2014-2015 Project Name: Owl River Walleye and Aquatic Habitat Assessment Fisheries Program Manager: Peter Aku Project Leader: Tyler Johns Primary ACA staff

More information

NORTHERN COMMITTEE THIRTEENTH REGULAR SESSION Busan, Republic of Korea 28 August 1 September 2017 JAPAN

NORTHERN COMMITTEE THIRTEENTH REGULAR SESSION Busan, Republic of Korea 28 August 1 September 2017 JAPAN NORTHERN COMMITTEE THIRTEENTH REGULAR SESSION Busan, Republic of Korea 28 August 1 September 2017 Report on CMM 2016-04 (Pacific bluefin tuna) WCPFC-NC13-2017/DP-05 JAPAN I. Overview of Japanese PBF Fisheries

More information

Witch Flounder (Divs. 4RST)

Witch Flounder (Divs. 4RST) Stock Status Report /5 4S 4R Witch Flounder (Divs. 4RST) Background 4T Pn 4Vn Ps Witch flounder are found in the deeper waters of the North Atlantic. In the Northwest Atlantic, witch range from the lower

More information

The Situation of Main Commercial Fishing in Lake Biwa

The Situation of Main Commercial Fishing in Lake Biwa The Situation of Main Commercial Fishing in Lake Biwa Then, I would like to explain the fisheries situation change in Lake Biwa for these 60 years by comparing with fluctuation of some fishing yields recorded

More information