Comparative Trophic Ecology of Yellowfin and Bigeye Tuna Associated with Natural and Man-made Aggregation Sites in Hawaiian Waters
|
|
- Bartholomew Gerald Eaton
- 6 years ago
- Views:
Transcription
1 PFRP Pelagic Fisheries Research Program Comparative Trophic Ecology of Yellowfin and Bigeye Tuna Associated with Natural and Man-made Aggregation Sites in Hawaiian Waters T. obesus T. albacares Dean Grubbs and Kim Holland Hawaii Institute of Marine Biology Pelagic Fisheries Research Program University of Hawaii
2 What we know! The formation of aggregations, groups of fishes attracted to a common resource (Freeman and Grossman 1992), is prevalent among tropical tunas. These aggregations are usually associated with physical entities (seamounts, floating debris, cetaceans, vessels, buoys, FADs). The majority of tropical tunas harvested commercially and recreationally are associated. What we don t! Underlying biological significance of aggregation behavior is poorly understood.
3 Pros and cons of association: Pros: 1) Forage 2) ॐ Predation 3) Reproductive Success Cons: 1) Competition interspsecific and intraspecific 2) Susceptibility to modern fishing gear.
4 Distributions of bigeye and yellowfin are vertically distinct. BUT, this pattern is known to collapse when associated.
5 OBJECTIVES: Compare feeding ecology of yellowfin and bigeye tuna within and between various mixed aggregations (using unassociated samples as controls). a) Stomach Fullness b) Feeding Strategy c) Prey Composition d) Depth of Feeding e) Timing of Feeding Evaluate potential trophic benefit of aggregating. Evaluate the effect of man-made aggregating structures on trophic biology.
6
7
8 (depth 47m)
9
10 UNASSOCIATED SAMPLES (LONGLINE)
11 METHODS: 1) Port Sampling a) Samples obtained directly from returning vessels b) Samples obtained from seafood buyers at UFA 2) Field Sampling a) Sampling at sea on commercial troll/handline vessels. b) Sampling at sea aboard project vessels.
12
13 Association Bigeye Yellowfin Unassociated Cross Seamount Offshore Weather Buoys Nearshore FADs Dolphin Pods 2 TOTAL Total Analyzed (9%) (68%)
14 Results Prey Composition
15 Depth 2 meters BE YF Epipelagic Zone Mesopelagic Zone 1 meters Bathypelagic Zone 4 meters Abyssopelagic Zone Abyssal Plain Hadal Zone
16 Prey Diversity (Fishes) PHYLUM: CHORDATA SUPERORDER SCOPELOMORPHA ORDER DACTYLOPTERIFORMES SUBPHYLUM: VERTEBRATA (CRANIATA) ORDER MYCTOPHIFORMES 33 FAMILY DACTYLOPTERIDAE CLASS: TELEOSTOMI (OSTEICHTHYES) 17 FAMILY MYCTOPHIDAE ORDER SCORPAENIFORMES SUBCLASS: ACTINOPTERYGII SUPERORDER LAMPRIDIOMORPHA 34 FAMILY SCORPAENIDAE INFRACLASS: NEOPTERYGII ORDER LAMPRIDIFORMES ORDER PERCIFORMES DIVISION: TELEOSTEI 18 FAMILY LOPHOTIDAE 35 FAMILY PERCICHTYIDAE SUBDIVISION: ELOPOMORPHA 19 FAMILY TRACHIPTERIDAE 36 FAMILY PRIACANTHIDAE ORDER ANGUILLIFORMES SUPERORDER PARACANTHOPTERYGII 37 FAMILY ECHENEIDAE 1 FAMILY OPHICHTHYIDAE ORDER OPHIDIIFORMES 38 FAMILY CARANGIDAE 2 FAMILY SERRIOVOMERIDAE 2 FAMILY OPHIDIIDAE 39 FAMILY BRAMIDAE SUBDIVISION: EUTELEOSTII ORDER GADIFORMES 4 FAMILY CHAETODONTIDAE SUPERORDER STENOPTERYGII 21 FAMILY BREGMACEROTIDAE 41 FAMILY POMACENTRIDAE ORDER STOMIIFORMES ORDER LOPHIIFORMES 42 FAMILY CIRRHITIDAE 3 FAMILY STOMIIDAE 22 FAMILY OGCOCEPHALIDAE 43 FAMILY CHIASMODONTIDAE 4 FAMILY MELANOSTOMIIDAE SUPERORDER ACANTHOPTERYGII 44 FAMILY BLENNIIDAE 5 FAMILY CHAULIODONTIDAE ORDER BELONIFORMES 45 FAMILY ACANTHURIDAE 6 FAMILY IDIACANTHIDAE 23 FAMILY EXOCOETIDAE 46 FAMILY SCOMBROLABRACIDAE 7 FAMILY ASTRONESTHIDAE 24 FAMILY HEMIRAMPHIDAE 47 FAMILY MALACANTHIDAE 8 FAMILY GONOSTOMATIDAE ORDER GASTEROSTEIFORMES 48 FAMILY TRICHIURIDAE 9 FAMILY PHOTICHTHYIDAE 25 FAMILY FISTULARIIDAE 49 FAMILY GEMPYLIDAE 1 FAMILY STERNOPTYCHIDAE 26 FAMILY SYNGNATHIDAE 5 FAMILY SCOMBRIDAE SUPERORDER CYCLOSQUAMATA SERIES PERCOMORPHA 51 FAMILY ISTIOPHORIDAE ORDER AULOPIFORMES ORDER STEPHANOBERYCIFORMES 52 FAMILY NOMEIDAE 11 FAMILY PARALAPEDIDAE 27 FAMILY MELAMPHEIDAE 53 FAMILY ARRIOMATIDAE 12 FAMILY SCOPELARCHIDAE ORDER BERYCIFORMES 54 FAMILY LUTJANIDAE 13 FAMILY EVERMANNELLIDAE 28 FAMILY ANOPLOGASTRIDAE 55 FAMILY TETRAGONURIDAE 14 FAMILY OMOSUDIDAE 29 FAMILY BERYCIDAE ORDER TETRAODONTIFORMES 15 FAMILY ALEPISAURIDAE 3 FAMILY DIRETMIDAE 56 FAMILY BALISTIDAE 16 FAMILY NOTOSUDIDAE 31 FAMILY HOLOCENTRIDAE 57 FAMILY MONOCANTHIDAE 32 FAMILY TRACHICHTHYIDAE 58 FAMILY TETRAODONTIDAE 59 FAMILY OSTRACIIDAE 6 FAMILY MOLIDAE
17 Authors Area Species (N) Fish Families Reintjes & King 1953 Central Pacific Yellowfin (167) 38 Ronquillo 1953 Western Pacific Yellowfin 36 King & Ikehara 1956 Central Pacific Yellowfin (439) 48 Watanabe 1958 Indian Ocean Yellowfin 37 Alverson 1963 Eastern Pacific Yellowfin (3763) 42 Kornilova 1981 Indian Ocean Yellowfin (445) 23 Borodulina 1982 Gulf of Guinea Yellowfin (67) 2 Borodulina 1982 Western Pacific Yellowfin (31) 3 Brock 1985 Hawaii Yellowfin (21) 27 Maldeniya 1996 Sri Lanka Yellowfin (4181) 44 Kim et al Western Pacific Yellowfin (181) 13 Current Study Hawaii Yellowfin (228) 34 King & Ikehara 1956 Central Pacific Bigeye (166) 35 Borodulina 1974 Gulf of Guinea Bigeye (143) 23 Kornilova 1981 Indian Ocean Bigeye (534) 19 Kim et al Western Pacific Bigeye (17) 13 Current Study Hawaii Bigeye (56) 52
18 Prey Diversity Comparisons Shannon's Reciprocal Prey Diversity (Shannon's Reciprocal Index) Bigeye Yellowfin Unassociated Seamount Weather Buoy
19 Results Stomach Fullness
20 Mean Stomach Fullness Bigeye Yellowfin Seamount Offshore Buoy Unassociated
21 Mean Stomach Fullness Bigeye Yellowfin Seamount Offshore Buoy Unassociated ANOVA: F=.453, =.363 Yellowfin
22 Mean Stomach Fullness Bigeye Yellowfin Seamount Offshore Buoy Unassociated ANOVA: F=4.272, <.1 Bigeye
23 Dietary Overlap Morisita s Index % Overlap (sign. at.6) (sign. at 6%) Bigeye.27 25% Unassociated vs. Seamount Bigeye.27 26% Unassociated vs. Buoy Bigeye.19 18% Seamount vs. Buoy Yellowfin.12 14% Unassociated vs. Seamount Yellowfin.22 27% Unassociated vs. Buoy Yellowfin.22 25% Seamount vs. Buoy
24 Mean Stomach Fullness Bigeye Yellowfin Seamount Offshore Buoy Unassociated t-test: t=.39, =.7
25 Unassociated Tuna: Frequency of Occurrence of Prey Fish Families 1 Major Families of Prey Fishes % of samples mesopelagics Bigeye Yellowfin epipelagics Paralapedidae Myctophidae Omosudidae Chiasmodontidae Scopelarchidae Scorpaenidae Gempylidae Anoplogasteridae Astronesthidae Sternoptychidae Alepisauridae Molidae Thunnidae Ostraciidae Engraulidae
26 Unassociated Tuna: Frequency of Occurrence of Invertebrate Prey 1 Major Taxa of Invertebrate Prey % of samples mesopelagics epipelagics Bigeye Yellowfin Cephalopoda Peneidae Euphausiacea Sergestidae Oplophoridae Megalopae Stomatopoda Amphipoda Thaliacea
27 Feeding Strategies (Costello 199) Percent Abundance Rare Prey Specialized Feeding Strategy Frequency of Occurence Dominant Prey Percent Abundance Generalized Feeding Strategy Wide Diet Breadth Frequency of Occurence
28 Unassociated Percent Abundance Bigeye Tuna Feeding Strategy Molidae Cephalopoda Peneidae Frequency of Occurence Percent Abundance Yellowfin Tuna Feeding Strategy Thaliacea Cephalopoda Engraulidae Amphipoda Frequency of Occurence
29 Unassociated 1 Bigeye Tuna Feeding Strategy Percent Volume Molidae Mesopelagic Aggregate Frequency of Occurence Cephalopoda 1 Yellowfin Tuna Feeding Strategy Percent Volume Scombridae Engraulidae Thaliacea Cephalopoda Frequency of Occurence
30 Dietary Overlap Morisita s Index % Overlap (sign. at.6) (sign. at 6%) Bigeye vs. Yellowfin.42 27% Unassociated
31 Mean Stomach Fullness Bigeye Yellowfin Seamount Offshore Buoy Unassociated t-test: t=3.5, =.31 NOAA Weather Buoy
32 Weather Buoy Tuna: Frequency of Occurrence of Prey Fish Families 1 Major Families of Prey Fishes % of samples mesopelagics epipelagics Bigeye Yellowfin Bramidae Lophotidae Gempylidae Thunnidae Ostraciidae Tetraondontidae Balistidae Dactylopteridae Molidae Exocoetidae Chaetodontidae Syngnathidae Alepisauridae
33 Weather Buoy Tuna: Frequency of Occurrence of Invertebrate Prey 1 Major Taxa of Invertebrate Prey % of samples mesopelagics epipelagics Bigeye Yellowfin Cephalopoda Gymnosomata Phyllosomes Euphausiacea Heterocarpus Sergestidae Enoplemetophidae Isopoda Amphipoda Thaliacea Stomatopoda Megalopae
34 Offshore Weather Buoy Associated 1 Bigeye Tuna Feeding Strategy Percent Abundance Cephalopoda Megalopae Frequency of Occurence 1 Yellowfin Tuna Feeding Strategy Percent Abundance Megalopae Cephalopoda Stomatopoda Frequency of Occurence
35 Offshore Weather Buoy Associated 1 Bigeye Tuna Feeding Strategy Percent Volume Bramidae Lophotidaedae Cephalopoda Frequency of Occurence 1 Yellowfin Tuna Feeding Strategy Percent Volume Molidae Scombridae Frequency of Occurence
36 Dietary Overlap Morisita s Index % Overlap (sign. at.6) (sign. at 6%) Bigeye vs. Yellowfin.42 27% Unassociated Bigeye vs. Yellowfin.4 32% Buoy Associated
37 Mean Stomach Fullness Bigeye Yellowfin Seamount Offshore Buoy Unassociated t-test: t=6.64, <.1 Cross Seamount
38 Depth 2 meters BE YF Epipelagic Zone Mesopelagic Zone 1 meters Bathypelagic Zone 4 meters Abyssopelagic Zone Abyssal Plain Hadal Zone
39 Depth 2 meters BE YF Epipelagic Zone Mesopelagic Zone 1 meters Cross Seamount 33m Bathypelagic Zone 4 meters Abyssopelagic Zone Abyssal Plain Hadal Zone
40 Holland, Kleiber, and Kajiura 1998 Estimated residence times of bigeye and yellowfin tuna at Cross Seamount Bigeye: 32 days Yellowfin: 15 days DIFFERENCE NOW MAKES SENSE! Also supports the increased forage theory as explanation of aggregation.
41 Depth of Feeding 72 samples collected from Cross Seamount September 21 Of 14 yellowfin, 4 captured >12m deep Of 58 bigeye, 43 captured >12m deep, 28 captured 3m or greater (along with Ruvettus and Eumegistus illustris)
42 Mean Stomach Fullness with Depth Cross Seamount - September Bigeye Yellowfin N=15 N=1 N=15 N=4 N=28 N= Depth (meters)
43 Cross Seamount Tuna: Frequency of Occurrence of Prey Fish Families 1 Major Families of Prey Fish % of samples mesopelagics Bigeye epipelagics Yellowfin Myctophidae Percichthyidae Chiasmodontidae Gonostomatidae Gempylidae Scopelarchidae Scombrolabracidae Paralapedidae Tetragonuridae Ostraciidae Exocoetidae Balistidae Chaetodontidae Acanthuridae Bramidae
44 Cross Seamount Tuna: Frequency of Occurrence of Invertebrate Prey 1 Major Taxa of Invertebrate Prey % of samples mesopelagics epipelagics Bigeye Yellowfin Cephalopoda Sergestidae Oplophoridae Penaeidae Pandalidae Isopoda Enoplemetophidae Euphausiacea Amphipoda Stomatopoda Megalopae
45 Cross Seamount Associated Percent Abundance Bigeye Tuna Feeding Strategy Oplophoridae Myctophidae Sergestidae Cephalopoda Frequency of Occurence Percent Abundance Yellowfin Tuna Feeding Strategy Sergestidae Megalopae Cephalopoda Frequency of Occurence
46 Cross Seamount Associated Percent Volume Bigeye Tuna Feeding Strategy Oplophoridae Myctophidae Sergestidae Cephalopoda Frequency of Occurence Percent Volume Yellowfin Tuna Feeding Strategy Myctophidae Sergestidae Oplophoridae Cephalopoda Frequency of Occurence
47 Dietary Overlap Morisita s Index % Overlap (sign. at.6) (sign. at 6%) Bigeye vs. Yellowfin.42 27% Unassociated Bigeye vs. Yellowfin.4 32% Buoy Associated Bigeye vs. Yellowfin.66 57% Seamount
48 Cross Seamount: Percent Abundance of Invertebrate Prey Percent of Total Shrimp Prey Families Oplophoridae and Sergestdae Bigeye Yellowfin Systelaspis O. gracilirostris O. spinacauda Acanthephyra Sergia young Sergia adult Sergestes young Sergestes adult Depth (meters)
49 Dietary Overlap Morisita s Index % Overlap (sign. at.6) (sign. at 6%) Bigeye vs. Yellowfin.42 27% Unassociated Bigeye vs. Yellowfin.4 32% Buoy Associated Bigeye vs. Yellowfin.66 57% Seamount Bigeye vs. Yellowfin.56 52% Seamount (cephalopods. oplophorids, and sergestids separated)
50 Timing of Feeding? Need more data! however... Cross Seamount: Percent Abundance of Invertebrate Prey Percent of Total Shrimp Prey Families Oplophoridae and Sergestdae Bigeye Yellowfin Systelaspis O. gracilirostris O. spinacauda Acanthephyra Sergia young Sergia adult Sergestes young Sergestes adult Depth (meters)
51 PRELIMINARY CONCLUSIONS Typical Seamount Prey Typical Offshore Buoy Prey
52 PRELIMINARY CONCLUSIONS 1) Bigeye and Yellowfin are euryphagous predators with generalized feeding strategies when associated with the Cross Seamount. The forage base for both species is extremely diverse, though few taxa are numerically or volumetrically important in the diet. 2) Differences in vertical distribution are reflected in prey composition and may minimize competition between tuna species. Yellowfin tuna fed primarily on mixed-layer prey while bigeye tuna fed on deep scatteringlayer prey 3) Association with the Cross Seamount imparts a larger trophic advantage to bigeye than yellowfin due to high abundance of mesopelagic prey. This explains why published residence times on the seamount are longer for bigeye than yellowfin. 4) Associating with offshore weather buoys is of no trophic advantage to either species may be metabolically costly for bigeye tuna. If this cost is detrimental,detailed evaluations of the ecological impact of man-made structures, such as FADs, in tropical waters might be warranted.
53 FUTURE PLANS Complete lab analysis of collected samples. Increase samples from unassociated tuna (longline vessels) and nearshore FADs (recreational vessels) Continue sampling to increase number of yellowfin samples, investigate timing of feeding, get samples from various capture depths. Stable Isotopes: Brittany Graham and Brian Popp Investigate seasonal and ontogenetic changes in trophic ecology.
54 1 Hypothetical shift in Dietary Overlap Bigeye versus Yellowfin.8 Index of Overlap < >1 Tuna Fork Length
55 1 Hypothetical shift in Dietary Overlap Bigeye versus Yellowfin.8? Index of Overlap < >1 Tuna Fork Length
56 Feeding Strategies Specialized Predator Dominant Prey
57 Copyright R. Dean Grubbs 1998 PAU
58 15 12 Seamount-associated Tuna Length Frequencies Bigeye Yellowfin Frequency < >11 Fork Length (cm) 8 Offshore Buoy-associated Tuna Length Frequencies Frequency Bigeye Yellowfin < >11 Fork Length (cm)
Comparative trophic ecology of yellowfin and bigeye tuna associated with natural and man-made aggregation sites in Hawaiian waters
SCTB15 Working Paper YFT-6 Comparative trophic ecology of yellowfin and bigeye tuna associated with natural and man-made aggregation sites in Hawaiian waters R. Dean Grubbs 1, Kim Holland 1, and David
More informationTrophic Ecology of Four Apex Predators of the Pelagic Ecosystem in the Indian Ocean
Trophic Ecology of Four Apex Predators of the Pelagic Ecosystem in the Indian Ocean Lancet fish, Yellowfin tuna, Bigeye tuna & Swordfish Michel Potier 1, Francis Marsac 2, Vincent Lucas 3, Richard Sabatié
More informationEffect of seamounts on mesopelagic micronekton community structure around Hawaii. Lisa De Forest, Jeffrey Drazen, and Réka Domokos
Effect of seamounts on mesopelagic micronekton community structure around Hawaii Lisa De Forest, Jeffrey Drazen, and Réka Domokos Outline Background information Study sites Methods of collection Preliminary
More informationTUNA trophic structure in the Pacific Ocean. PFRP funded project
TUNA trophic structure in the Pacific Ocean Valerie ALLAIN SPC Noumea Brian POPP UH Honolulu Felipe GALVAN CICIMAR La Paz Brittany GRAHAM UH Honolulu Bob OLSON IATTC San Diego Brian FRY LSU Baton Rouge
More informationQualitative analysis of food webs in the Pacific Ocean
Qualitative analysis of food webs in the Pacific Ocean Wealth from Oceans J Young, J Dambacher, R Olson, V Allain, F Galvan-Magana, M Lansdell, N Bocanegra- Castillo, V Alatorre-Ramirez, S Cooper, L Duffy
More informationapplication of the dumb tag technology
Aggregation, exploitation and scales of spatial variability... of bigeye and yellowfin tuna in the Central Pacific:. application of the dumb tag technology Hawaii Tuna Pelagic Fisheries Research Program
More informationAnalysis on stomach content of bigeye tuna ( Thunnus obesus) in the eastern-central Pacific Ocean
11 1 2 0 1 5 2 South China Fisheries Science Vol. 11, No. 1 Feb., 2015 doi: 10. 3969/ j. issn. 2095-0780. 2015. 01. 011,,,,,, (,,,, 201306) : ( Thunnus obesus), 2010 9 2011 1,,, (, P < 0. 05),, 32. 7%
More informationDiet of mahi-mahi, wahoo and lancetfish in the western and central Pacific. Valérie ALLAIN
SCTB16 Working Paper BBRG-6 Diet of mahi-mahi, wahoo and lancetfish in the western and central Pacific. Valérie ALLAIN Oceanic Fisheries Programme Secretariat of the Pacific Community Noumea, New Caledonia
More informationJIMAR, PFRP ANNUAL PROGRESS REPORT FOR FY PROJECT #
JIMAR, PFRP ANNUAL PROGRESS REPORT FOR FY 2002-2003 PROJECT # 659559 P.I. Names: Valerie Allain, Robert Olson, Felipe Galván-Magaña, and Brian Popp Project Proposal Title: Trophic structure and tuna movement
More informationTagging tuna in the Central Pacific:
Tagging tuna in the Central Pacific: ecological and management related issues. David Itano, Kim Holland, Steve Kajiura JAPAN 150E 160E 180 170E 170W 160W 150W Yellowfin movements 140W USA 30N Northern
More informationContribution of cephalopod prey to large pelagic fish diet in the central N. Atlantic
Contribution of cephalopod prey to large pelagic fish diet in the central N. Atlantic http://www.mafmc.org/ J. Logan, R. Toppin, S.C. Smith, J.M. Porter, M. Lutcavage Fisheries and Oceans Canada Central
More informationTROPHIC RELATIONSHIPS BETWEEN PREDATORS CAUGHT BY TUNA PURSE-SEINERS SEINERS IN THE EASTERN PACIFIC OCEAN
TROPHIC RELATIONSHIPS BETWEEN PREDATORS CAUGHT BY TUNA PURSE-SEINERS SEINERS IN THE EASTERN PACIFIC OCEAN DR. FELIPE GALVAN- MAGAÑA CENTRO INTERDISCIPLINARIO DE CIENCIAS MARINAS. LA PAZ, BAJA CALIFORNIA
More informationIsotope Biogeography and Trophic Dynamics of Billfish Collected in the Equatorial Pacific Ocean.
Isotope Biogeography and Trophic Dynamics of Billfish Collected in the Equatorial Pacific Ocean Brittany Graham Dept of Oceanography, Univ of Hawaii, Honolulu, HI Brian Popp Dept of Geol and Geophysics,
More informationTUNA DIET IN THE EQUATORIAL PACIFIC OCEAN EAST TO WEST
TUNA DIET IN THE EQUATORIAL PACIFIC OCEAN EAST TO WEST Valerie ALLAIN SPC Noumea Bob OLSON IATTC San Diego Felipe GALVAN CICIMAR La Paz Brian FRY LSU Baton Rouge Brittany GRAHAM UH Honolulu SINLAB University
More informationSMALL 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 informationSAC-08-10a Staff activities and research plans. 8 a Reunión del Comité Científico Asesor 8 th Meeting of the Scientific Advisory Committee
SAC-08-10a Staff activities and research plans 8 a Reunión del Comité Científico Asesor 8 th Meeting of the Scientific Advisory Committee IATTC RESEARCH PROGRAM Four programs: A. Stock Assessment; B. Biology
More informationJIMAR PFRP ANNUAL REPORT FOR FY To protect, restore, and manage the use of coastal and ocean resources through ecosystem-base management
JIMAR PFRP ANNUAL REPORT FOR FY 2007 P.I./Sponsor Name: David Itano and Kim Holland Project Proposal Title: The Associative Dynamics of Tropical Tuna to a Large-scale Anchored FAD Array Funding Agency:
More informationTropical Scombrid Feeding Habits in the Central Pacific Kevin McLean S-199 June 9, 2005
Tropical Scombrid Feeding Habits in the Central Pacific Kevin McLean S-199 Stanford@SEA June 9, 2005 Abstract The feeding habits of tropical scombrid species was conducted through analysis of stomach contents
More informationAlbacore tuna, Bigeye tuna, Blackfin tuna, Skipjack tuna, Yellowfin tuna. Image Monterey Bay Aquarium. Atlantic. Purse Seine.
Albacore tuna, Bigeye tuna, Blackfin tuna, Skipjack tuna, Yellowfin tuna Thunnus alalunga, Thunnus obesus, Thunnus atlanticus, Katsuwonus pelamis, and Thunnus albacares Image Monterey Bay Aquarium Atlantic
More informationPapua New Guinea/SPC Tuna Tagging Project: PRFP linking to the bigger picture
Papua New Guinea/SPC Tuna Tagging Project: PRFP linking to the bigger picture David Itano 1 Kim Holland 2 John Hampton 3 1 University of Hawaii, Pelagic Fisheries Research Program 2 Hawaii Institute of
More informationBiological Sampling Newslet for Observers and Port Samplers
Biological Sampling Newslet tter for Observers and Port Samplers SPC-OFP Ecosystem Monitoring and Analysis Section * Issue #12 15 October 2009 Welcome to the 12th issue of the Biological Sampling Newsletter,
More informationYellowfin Tuna, Indian Ocean, Troll/ pole and line
Yellowfin Tuna, Indian Ocean, Troll/ pole and line Yellowfin Tuna, Indian Ocean, Troll/ pole and line Content last updated 7th Mar 2017 Stock: Indian Ocean Management: Indian Ocean Tuna Commission Overview
More informationSCIENTIFIC COMMITTEE THIRD REGULAR SESSION August 2007 Honolulu, United States of America
SCIENTIFIC COMMITTEE THIRD REGULAR SESSION 13-24 August 2007 Honolulu, United States of America ANNUAL REPORT PART 1 INFORMATION ON FISHERIES, RESEARCH, AND STATISTICS WCPFC-SC3-AR PART 1/WP-15 REPUBLIC
More informationSCTB16 Working Paper FTWG 5
0 SCTB16 Working Paper FTWG 5 Fishery-related attributes associated with FAD and log fishing practices conducted by the U.S. purse seine fleet in the central-western Pacific Ocean, 1997 2002. Al Coan Jr.
More informationSome 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 informationWORKING GROUP ON STOCK ASSESSMENTS 5 TH MEETING DOCUMENT SAR-5-05 BET A
INTER-AMERICAN TROPICAL TUNA COMMISSION COMISIÓN INTERAMERICANA DEL ATÚN TROPICAL WORKING GROUP ON STOCK ASSESSMENTS 5 TH MEETING LA JOLLA, CALIFORNIA (USA) 11-13 MAY 2004 DOCUMENT SAR-5-05 BET A POSSIBLE
More informationand found that there exist a significant overlap between the billfish resources and the exploitation activities targeting tunas and mahi mahi.
Executive Summary Report 2016 Billfish Research in the Eastern Pacific Ocean Rosenstiel School of Marine and Atmospheric Science University of Miami January 2017 During 2016, the Eastern Pacific Ocean
More informationAlbacore Tuna, Bigeye Tuna, Skipjack Tuna, Swordfish, Yellowfin Tuna. Image Monterey Bay Aquarium. Hawaii Longline
Albacore Tuna, Bigeye Tuna, Skipjack Tuna, Swordfish, Yellowfin Tuna Thunnus alalunga, Thunnus obesus, Katsuwonus pelamis, Xiphias gladius, Thunnus albacares Image Monterey Bay Aquarium Hawaii Longline
More informationFeeding habits of mesopelagic fishes off the coast of western Kyushu, Japan
PICES 16 th : BIO_P-4200 (1 Nov, 2007) Feeding habits of mesopelagic fishes off the coast of western Kyushu, Japan Hiroshige Tanaka 1, Seiji Ohshimo 1, Chiyuki Sassa 1 and Ichiro Aoki 2 1 Seikai National
More informationDavid Wells 1, Jay Rooker 1, David Itano 2
David Wells 1, Jay Rooker 1, David Itano 2 1 Texas A&M University, Department of Marine Biology 2 University of Hawaii, Joint Institute for Marine & Atmospheric Research, Pelagic Fisheries Research Program
More informationComposition, Abundance and Distribution of Fish Larvae in the Bay of Bengal
Composition, Abundance and Distribution of Fish Larvae in the Bay of Bengal Pattira Lirdwitayaprasit 1, Chirat Nuangsang 1, Paitoon Puewkhao 2 Md. Jalilur Rahman 3, U Aung Htay Oo 4, and U Aung Win Sien
More informationJIMAR PFRP ANNUAL REPORT FOR FY 2007
JIMAR PFRP ANNUAL REPORT FOR FY 7 P.I./Sponsor Name: PI: David S. Kirby; Co-PIs: Adam Langley, Valerie Allain Oceanic Fisheries Programme, Secretariat of the Pacific Community, BPD5, 9888 Noumea, New Caledonia
More informationTeleosts II: Acanthomorpha: spiny teleosts
Teleosts II: Acanthomorpha: spiny teleosts Division: Teleostei Subdivision: Euteleostei Acanthomorpha Acanthomorpha: spiny teleosts Spine: unsegmented true spines occur in the dorsal, anal, and pelvic
More informationZOOPLANKTON. Zooplankton: 2. Crustaceans Copepods. Diverse -- protozoans and others
ZOOPLANKTON Diverse -- protozoans and others Nutrition modes: Herbivores (graze on phytoplankton) Carnivores (predators) Radiolaria Foraminifera Zooplankton: 1. Protozoans: Foraminifera and Radiolarians
More informationTuna [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 informationFishery-induced changes in the subtropical Pacific pelagic ecosystem size structure: Observations and theory
Fishery-induced changes in the subtropical Pacific pelagic ecosystem size structure: Observations and theory Jeffrey J. Polovina and Phoebe A. Woodworth-Jefcoats Pacific Islands Fisheries Science Center
More informationCATCH AND EFFORT BY KOREAN FLAGGED FLEET
CATCH AND EFFORT BY KOREAN FLAGGED FLEET Z. G. Kim, S. I. Lee, D. Y. Moon and D. W. Lee Natinal Fisheries Research and Development Institute Haean-ro 216, Gijang-eup, Gijang-gun, 619-705, Busan, Korea
More informationEcosystem Models: Food webs
Ecosystem Models: Food webs How should components of the food web be represented in models? Ecosystem: a geographically specified system of organisms, including humans, the environment, and the processes
More informationINTER-AMERICAN TROPICAL TUNA COMMISSION SCIENTIFIC ADVISORY COMMITTEE FIFTH MEETING. La Jolla, California (USA) May 2014 DOCUMENT SAC-05-12
INTER-AMERICAN TROPICAL TUNA COMMISSION SCIENTIFIC ADVISORY COMMITTEE FIFTH MEETING La Jolla, California (USA) 12-16 May 2014 DOCUMENT SAC-05-12 EVALUATION OF THE RELATIONSHIP BETWEEN ACTIVE PURSE- SEINE
More informationThe vertical and horizontal distribution of bigeye tuna (Thunnus( albacares) ) related to ocean structure
14 th PICES The vertical and horizontal distribution of bigeye tuna (Thunnus( obesus) ) and yellowfin tuna (Thunnus( albacares) ) related to ocean structure Eun Jung Kim 1,2, Suam Kim 1, Dae-Yeon Moon
More informationIs Lagonoy Gulf a special breeding ground for Yellowfin Tuna?
Is Lagonoy Gulf a special breeding ground for Yellowfin Tuna? A presentation by Dr. Heiko Seilert Overall Project Manager PPTST 10 September 2013, General Santos Why This Question I 1. In interviews conducted
More informationCommercial Yellowfin Tuna Fishing in the Gulf of Mexico States
Commercial Yellowfin Tuna Fishing in the Gulf of Mexico States Yellowfin tuna (Thunnus albacares, Fig. 1), also known as Tuna or Ahi, inhabit tropical and subtropical oceans worldwide 1. Yellowfin tuna
More informationImpact of Industrial Tuna Fisheries on Fish Stocks and the Ecosystem of the Pacific Ocean
Impact of Industrial Tuna Fisheries on Fish Stocks and the Ecosystem of the Pacific Ocean www.soest.hawaii.edu/pfrp/large_pelagics/large_pelagic_predators John Sibert John Hampton Pelagic Fisheries Research
More informationJIMAR PFRP ANNUAL REPORT FOR FY 2006
JIMAR PFRP ANNUAL REPORT FOR FY 2006 P.I./Sponsor Name: Michael P. Seki and Jeffrey J. Polovina Project Proposal Title: Oceanographic Characterization of the American Samoa Longline Fishing Grounds for
More informationSpatial/Seasonal overlap between the midwater trawl herring fishery and predator focused user groups
Spatial/Seasonal overlap between the midwater trawl herring fishery and predator focused user groups A working paper submitted to the Herring PDT Micah Dean July 26, 2017 Introduction A goal of Amendment
More informationBiological Sampling and Foraging Ecology of North Pacific Albacore
Biological Sampling and Foraging Ecology of North Pacific Albacore Owyn Snodgrass, Heidi Dewar, Dave Wells & Suzanne Kohin NOAA Southwest Fisheries Science Center, La Jolla, CA 92037 USA Motivation for
More informationSpecific gravity measurements on mackerel eggs and larvae and implications for interannual variability in recruitment
PICES 2016 S2 Specific gravity measurements on mackerel eggs and larvae and implications for interannual variability in recruitment Hwahyun Lee 1, Sukyung Kang 2, Kyungmi Jung 2, Suam Kim 1, and Sukgeun
More informationStatus of the Lake Erie Fish Community Jeff Tyson, Ohio Division of Wildlife
Status of the Lake Erie Fish Community 2010 Jeff Tyson, Ohio Division of Wildlife Status of the Lake Erie Fish Community 2010 Physical Environment/Fish Community West to east gradient in depth, temperature,
More informationResearch Priorities of the SPC Oceanic Fisheries Programme. John Hampton Oceanic Fisheries Programme Secretariat of the Pacific Community
Research Priorities of the SPC Oceanic Fisheries Programme John Hampton Oceanic Fisheries Programme Secretariat of the Pacific Community Outline Tuna fishery and stocks OFP Strategic Plan 2006-2008 Research
More informationINTRODUCTION. Key words: diet, feeding ecology, tuna, western Indian Ocean, vertical habitat
Western Indian Ocean J. FEEDING Mar. Sci. PARTITIONING Vol. 3, No. 1, IN pp. YELLOWFIN 51 62, 2004 AND BIGEYE TUNA 51 2004 WIOMSA Feeding Partitioning among Tuna Taken in Surface and Mid-water Layers:
More informationTuna and tuna forage: reconciling modeling and observation in a spatial mixed-resolution ecosystem model
Tuna and tuna forage: reconciling modeling and observation in a spatial mixed-resolution ecosystem model Patrick Lehodey Oceanic Fisheries Programme Secretariat of the Pacific Community Noumea, New Caledonia
More informationBiological Sampling Newsletter
Biological Sampling Newsletter for Observers and Port Samplers SPC-OFP Ecosystem Monitoring and Analysis Section * Issue #13 15 January 2010 Welcome to the thirtheenth issue of the Biological Sampling
More informationMonitoring the pelagic ecosystem effects of different levels of fishing effort on the western Pacific Ocean warm pool
Monitoring the pelagic ecosystem effects of different levels of fishing effort on the western Pacific Ocean warm pool Photo: David Itano ISSF 2012 This report may be cited as follows: Allain V., Griffiths
More informationThe Biology of FAD-Associated Tuna: Temporal Dynamics of Association and Feeding Ecology
~UH-NOAA~ Volume 8, Number 3 July September 2003 The Biology of FAD-Associated Tuna: Temporal Dynamics of Association and Feeding Ecology Kim Holland, Dean Grubbs, David Itano, Brittany Graham, and Laurent
More informationEU initiatives on FAD research
Hilario Murua Jon Lopez Josu Santiago Current Research Areas Non-target species By-catch reduction Target species (small sizes)-> reduction Post-release survivorship (whale shark, silky shark) Monitoring
More informationWORKING GROUP ON STOCK ASSESSMENTS 5 TH MEETING DOCUMENT SAR-5-08 TARGET SIZE FOR THE TUNA FLEET IN THE EASTERN PACIFIC OCEAN
INTER-AMERICAN TROPICAL TUNA COMMISSION COMISIÓN INTERAMERICANA DEL ATÚN TROPICAL WORKING GROUP ON STOCK ASSESSMENTS 5 TH MEETING LA JOLLA, CALIFORNIA (USA) 11-13 MAY 2004 DOCUMENT SAR-5-08 TARGET SIZE
More informationPreliminary analysis of yellowfin tuna catch, effort, size and tagging data using an integrated age-structured model
Preliminary analysis of yellowfin tuna catch, effort, size and tagging data using an integrated age-structured model Introduction John Hampton Secretariat of the Pacific Community Noumea, New Caledonia
More informationA PRELIMINARY FOOD WEB OF THE PELAGIC ENVIRONMENT OF THE SARGASSO SEA WITH A FOCUS ON THE FISH SPECIES OF INTEREST TO ICCAT. Brian E.
1 SCRS/2014/120 A PRELIMINARY FOOD WEB OF THE PELAGIC ENVIRONMENT OF THE SARGASSO SEA WITH A FOCUS ON THE FISH SPECIES OF INTEREST TO ICCAT Brian E. Luckhurst¹ SUMMARY This paper provides information on
More informationCALIFORNIA DEPARTMENT OF FISH AND WILDLIFE UPDATE ON LANDINGS OF TUNA, SWORDFISH AND OTHER PELAGICS
Agenda Item I.2.a Supplemental CDFW Report November 216 CALIFORNIA DEPARTMENT OF FISH AND WILDLIFE UPDATE ON LANDINGS OF TUNA, SWORDFISH AND OTHER PELAGICS Update on Pacific Bluefin Tuna Commercial Landings
More informationDistribution and abundance of demersal fish and invertebrate fauna around the
Ecology of the Antarctic Sea Ice Zone Symposium Session: Benthic communities and diversity Distribution and abundance of demersal fish and invertebrate fauna around the South Orkneys Islands Instituto
More informationYELLOWFIN TUNA (Thunnus albacares)
WETJENS DIMMLICH / W FACTSHEET APRIL 2015 WF SFI Smart Fishing Initiative (SFI): species overview YELLOWFIN TUNA (Thunnus albacares) Region: Indian Ocean IOTC status 2014: not subject to overfishing [1]
More information92 ND MEETING DOCUMENT IATTC-92 INF-C
INTER-AMERICAN TROPICAL TUNA COMMISSION 92 ND MEETING Mexico City, Mexico 24-28 July 2017 DOCUMENT IATTC-92 INF-C POTENTIAL EFFECTS ON TUNA STOCKS OF ALTERNATIVE MANAGEMENT SCHEMES At the request of a
More informationTHE DIVERSITY OF FISHES
Gene S. Helfman Bruce B. Collette Douglas E. Facey Brian W. Bowen Second Edition THE DIVERSITY OF FISHES Biology, Evolution, and WILEY-BLACKWELL A John Wiley & Sons, Ltd., Publication Brief contents Full
More informationTuna Longline Fishery in the Indian Ocean by Thai Fleet during
Tuna Longline Fishery in the Indian Ocean by Thai Fleet during - Narupon Darumas* Aekkarat Wongkeaw and Watcharapong Chumchuen Deep Sea Fishery Technology Research and Development Institute, Department
More informationEcology of Manta Rays
Ecology of Manta Rays Kelly Newton, Don Croll, Kevin Weng, Felipe Galvan, John O Sullivan Sullivan, Ellen Freund, Heidi Dewar Alejandro Acevedo, Bernie Tershy Trophically Simple Top Predators Linked to
More informationMarine Mammals. James M. Price. Division of Environmental Sciences. from NOAA photograph library
Marine Mammals from NOAA photograph library James M. Price James.Price@boem.gov Division of Environmental Sciences Environmental Studies Program R/V Pisces (from NOAA Web site) Develops and oversees applied
More informationNFR-22. National Report: Update on tuna fisheries of Taiwan in the Pacific Region. SCTB15 Working Paper
CTB1 Working Paper FR-22 ational Report: Update on tuna fisheries of Taiwan in the Pacific Region hu-hui Wang 1, hyh-bin Wang 1, and Chin-Lau Kuo 2 1 Overseas Fisheries Development Council of the Republic
More information8 TH MEETING DOCUMENT BYC-08 INF-A
INTER-AMERICAN TROPICAL TUNA COMMISSION WORKING GROUP ON BYCATCH 8 TH MEETING La Jolla, California (USA) 10-11 May 2018 DOCUMENT BYC-08 INF-A WHALE SHARK INTERACTIONS WITH THE TUNA PURSE-SEINE FISHERY
More informationSummary of Preliminary Results of Transboundary Diagnostic Analysis, 2018
1 Western And Central Pacific Oceanic Fisheries Management Summary of Preliminary Results of Transboundary Diagnostic Analysis, 2018 Fact sheet for the Oceanic Fisheries Management Project (OFMP2). OFMP2
More informationSheepshead Fishery Overview South Atlantic State/Federal Management Board May 2014 Introduction Life History Landings
Sheepshead Fishery Overview South Atlantic State/Federal Management Board May 2014 Introduction The Atlantic States Marine Fisheries Commission (ASMFC) does not currently manage sheepshead (Archosargus
More informationEcological interactions between forage fish, rorquals, and fisheries in Haida Gwaii
Ecological interactions between forage fish, rorquals, and fisheries in Haida Gwaii Szymon Surma MSc candidate UBC Fisheries Centre The problem rorquals: lunge-feeding baleen whales eat large quantities
More informationCALIFORNIA DEPARTMENT OF FISH AND WILDLIFE UPDATE ON LANDINGS OF TUNA, SWORDFISH AND OTHER PELAGICS
Agenda Item H.2.c Supplemental CDFW Report 1 November 217 CALIFORNIA DEPARTMENT OF FISH AND WILDLIFE UPDATE ON LANDINGS OF TUNA, SWORDFISH AND OTHER PELAGICS CDFW Summary of HMS Landings Data Improvement
More informationSTATISTICS OF THE FRENCH PURSE SEINE FISHING FLEET TARGETING TROPICAL TUNAS IN THE INDIAN OCEAN ( )
STATISTICS OF THE FRENCH PURSE SEINE FISHING FLEET TARGETING TROPICAL TUNAS IN THE INDIAN OCEAN (1981-2017) Laurent Floch *, Patrice Dewals +, Anaïs Médieu +, Mathieu Depetris *, Antoine Duparc *, Julien
More informationWCPFC SC1 ST WP 4. Tim Lawson and Peter Williams. Oceanic Fisheries Programme Secretariat of the Pacific Community Noumea, New Caledonia
WCPFC SC1 ST WP 4 1st Meeting of the Scientific Committee of the Western and Central Pacific Fisheries Commission WCPFC SC1 Noumea, New Caledonia 8 19 August 2005 COMPARISON OF THE SPECIES COMPOSITION
More informationRecent advances, ongoing challenges, and future directions in ecosystem approaches to fisheries management in the central North Pacific
Recent advances, ongoing challenges, and future directions in ecosystem approaches to fisheries management in the central North Pacific Jeffrey Polovina 1, Johanna Wren 1, Woodworth-Jefcoats 1,4, Anela
More informationResults from PSAT attachments to swordfish a cautionary tale
Results from PSAT attachments to swordfish a cautionary tale Richard Brill & Michael Musyl PSATS deployed to date 32 blue sharks 4 shortfin mako 8 oceanic white tip sharks 4 silky sharks 7 bigeye thresher
More informationPelagic Predators Food Habits Project
Pelagic Predators Food Habits Project Tim Essington and Mary Hunsicker University of Washington Robert Olsen and Mark Maunder IATTC Enric Cortes SWFSC Using a Food Habits Database Our hypothesis: Reduced
More informationBIGEYE TUNA (THUNNUS OBESUS) IN THE MALDIVES R. Charles Anderson
BIGEYE TUNA (THUNNUS OBESUS) IN THE MALDIVES R. Charles Anderson Marine Research Section, Ministry of Fisheries and Agriculture Malé Republic of Maldives INTRODUCTION The Maldives has a large traditional
More informationIran small-scale tuna longline fishery targeting yellowfin tuna (Thunnus albacares) in Oman Sea: A preliminary study
Iran small-scale tuna longline fishery targeting yellowfin tuna (Thunnus albacares) in Oman Sea: A preliminary study Seyed Abbas Hosseini 1*, Mohamad Mirzaei 1, Bezhan Azhang 1, Reza Daryanabard 2 1 Offshore
More informationCatch of Experimental Longline, Purse Seine and Handline in the South China Sea, Area III: Western Philippines
Catch of Experimental Longline, Purse Seine and Handline Noel C. Barut Bureau of Fisheries & Aquatic Resources, 860 Arcadia Bldg. Quezon Avenue, Quezon City 00, Philippines ABSTRACT This paper presents
More informationTakayuki Matsumoto 1, Keisuke Satoh 1, Yasuko Semba 1, Tatsuki Oshima 2 and Mikio Toyonaga 2
Difference of fish behavior associated with drifting FADs by species and oceanographic conditions possibility of selective catch by purse seine fishery Takayuki Matsumoto 1, Keisuke Satoh 1, Yasuko Semba
More informationCritical The status of the southern bluefin tuna (SBT) stock is at a critical stage resulting in a reduction in the global SBT catch in 2010/2011.
SANBI IDentifyIt - Species Southern Bluefin Tuna - Thunnus maccoyii Geographic location / distribution Habitat: Found throughout the southern ocean, in the Pacific, Indian and Atlantic Oceans, southern
More informationCommercial Bycatch Rates of Shortfin Mako (Isurus oxyrinchus) from Longline Fisheries in the Canadian Atlantic
ICCAT Working Paper for Shark Stock Assessment Meeting 2008 Commercial Bycatch Rates of Shortfin Mako (Isurus oxyrinchus) from Longline Fisheries in the Canadian Atlantic G.M. Fowler and S.E. Campana Population
More informationINTER-AMERICAN TROPICAL TUNA COMMISSION SCIENTIFIC ADVISORY COMMITTEE FOURTH MEETING. La Jolla, California (USA) 29 April - 3 May 2013
INTER-AMERICAN TROPICAL TUNA COMMISSION SCIENTIFIC ADVISORY COMMITTEE FOURTH MEETING La Jolla, California (USA) 29 April - 3 May 2013 DOCUMENT SAC-04-04c INDICES OF RELATIVE ABUNDANCE OF YELLOWFIN TUNA
More informationIs fishing really worth more than
Is fishing really worth more than biodiversity in the open ocean? $$ =? Summer Martin 1, Lisa T. Ballance 1,2, Theodore Groves 3 1 Scripps Institution of Oceanography 2 NOAA Fisheries, Southwest Fisheries
More informationShark Catches by the Hawaii-based Longline Fishery. William A. Walsh. Keith A. Bigelow
Shark Catches by the Hawaii-based Longline Fishery William A. Walsh Pelagic Fisheries Research Program NOAA Pacific Islands Fisheries Science Center Keith A. Bigelow NOAA Pacific Islands Fisheries Science
More informationSCIENTIFIC COMMITTEE THIRD REGULAR SESSION August 2007 Honolulu, United States of America
SCIENTIFIC COMMITTEE THIRD REGULAR SESSION 13-24 August 27 Honolulu, United States of America PRELIMINARY ANALYSIS AND OBSERVATIONS ON THE VERTICAL BEHAVIOUR OF WCPO SKIPJACK, YELLOWFIN AND BIGEYE TUNA
More informationPROPOSAL IATTC-92 B-4 REVISED SUBMITTED BY BELIZE, GUATEMALA, NICARAGUA, COSTA RICA AND PANAMA
INTER-AMERICAN TROPICAL TUNA COMMISSION 92 ND MEETING Mexico City, Mexico 24-28 July 2017 PROPOSAL IATTC-92 B-4 REVISED SUBMITTED BY BELIZE, GUATEMALA, NICARAGUA, COSTA RICA AND PANAMA COMPENDIUM OF CONSERVATION
More informationDOCUMENT SAC-08 INF A(a) 2016 ANNUAL SCIENTIFIC OBSERVER REPORT FOR KOREAN TUNA LONGLINE FISHIERY IN THE IATTC CONVENTION AREA
INTER-AMERICAN TROPICAL TUNA COMMISSION SCIENTIFIC ADVISORY COMMITTEE EIGHTH MEETING La Jolla, California (USA) 05-12 May 2017 DOCUMENT SAC-08 INF A(a) 2016 ANNUAL SCIENTIFIC OBSERVER REPORT FOR KOREAN
More informationTemperature Main thermocline is present in the mesopelagic Relatively constant at the ocean depths, below 1000m About 35 F = 2 C
Number of species Marine ecosystems 6: Deep Sea Delimited by the photic zone (200m) and the bottom of the ocean Mesopelagic Ocean depths 200-1000m Below 1000m Unique features Lack of primary production
More informationProgress Made by Tuna Regional Fisheries Management Organizations (RFMOs)
Progress Made by Tuna Regional Fisheries Management Organizations (RFMOs) Background Following the first joint meeting of the five tuna regional fisheries management organizations (RFMOs) in January 2007,
More informationResearch Institute for Marine Fisheries, Jakarta Indonesia ABSTRACT
MONTHLY AVERAGE DISTRIBUTION OF FISHING EFFORT AND CATCH PER UNIT EFFORT FOR YELLOWFIN TUNA AND BIGEYE TUNA IN INDONESIAN WATERS OF THE INDIAN OCEAN, 1978-1990 Jacobus C.B. Uktolseja Research Institute
More informationThe Economics of Atlantic Highly Migratory Species For-Hire Fishing Trips July - November 2013 Clifford Hutt and George Silva
The Economics of Atlantic Highly Migratory Species For-Hire Fishing Trips July - November 2013 Clifford Hutt and George Silva U.S. Department of Commerce National Oceanic and Atmospheric Administration
More informationConversion Factors Estimated for Bigeye and Yellowfin Tunas Distributed in Surrounding Waters of Taiwan
SCTB15 Working Paper RG-2 Conversion Factors Estimated for Bigeye and Yellowfin Tunas Distributed in Surrounding Waters of Taiwan Shyh-Bin Wang 1, Feng-Chen Chang 1, Shui-Hei Wang 1, and Shui-Kai Chang
More informationEEB 122b PRACTICE SECOND MIDTERM
EEB 122b PRACTICE SECOND MIDTERM Page 1 1. You are interested in conducting an experiment with two competing species of plants. Below are the zero-growth isoclines for the two species. C D a) Draw the
More informationProtect Our Reefs Grant Interim Report (October 1, 2008 March 31, 2009) Principal investigators: Donald C. Behringer and Mark J.
Investigating the role of the spotted spiny lobster (Panulirus guttatus) in the recovery of the long spined sea urchin (Diadema antillarum) on the coral reefs of the Florida Keys Protect Our Reefs Grant
More informationWORKING PAPER SKJ 1 IMPACT OF ENSO ON SURFACE TUNA HABITAT IN THE WESTERN AND CENTRAL PACIFIC OCEAN. Patrick Lehodey
Impact of ENSO on surface tuna habitat 1 WORKING PAPER SKJ 1 IMPACT OF ENSO ON SURFACE TUNA HABITAT IN THE WESTERN AND CENTRAL PACIFIC OCEAN Patrick Lehodey Oceanic Fisheries Programme Secretariat of the
More informationComparison of Fish Waste in Pelagic Longline Fisheries (and more)
Comparison of Fish Waste in Pelagic Longline Fisheries (and more) John Kaneko Paul Bartram PacMar Inc. CATCH (targeted and non-targeted) REJECTS MARKETABLE YIELD PROCESSING WASTE CAPTURE BYCATCH (non-viable)
More informationSouthern bluefin tuna >6.4kg Bigeye tuna >3.2kg Yellowfin tuna >3.2kg Swordfish >119cm LJFL / >18kg dressed Marlins >210cm LJFL
SANBI IDentifyIt - Species Albacore/Longfin Tuna - Thunnus alalunga Geographic location / distribution Habitat : Albacore is an oceanic species, seldom coming close to shore as they prefer deep, wide open
More informationName: Morgan Kammerer Topic: Unsustainable Fishing Methods
Name: Morgan Kammerer Topic: Unsustainable Fishing Methods Presentation Outline: Unsustainable Fishing Methods I. Introduction a. Opening Statement: Raise your hand if you consume any type of seafood.
More information