SCRS/213/149 Collect. Vol. Sci. Pap. ICCAT, 7(6): 264-2668 (214) STATISTICS OF THE EUROPEAN AND ASSOCIATED PURSE SEINE AND BAITBOAT FLEETS, IN THE ATLANTIC OCEAN A. Delgado de Molina 1, L. Floch 2, V. Rojo 3, A. Damiano 2, J. Ariz 1, E. Chassot 1, F.N Gom 4, P. Chavance 2, A. Tamegnon SUMMARY This document presents a summarized statistical balance of the European and assimilated purse seine and baitboat fleet from 1991 to 212. The document presents indications on fleet characteristics (type of fishery by number category), fishing effort by type and vessel size category, number of 1º square visited by the fleet by year during the period, catches, effort and PUE by species for purse seine and baitboat, as well as the average individual weight by species and by gear. Fishing maps are also presented indicating fleet deployment in the Atlantic, as well as the time-area distribution of European and assimilated purse seine catches in 212 compared to the average 27-211 scenario. RÉSUMÉ Ce document récapitule le solde statistique des flottilles de senneurs et de canneurs européens et assimilés de 1991 à 212. Le document présente des indications sur les caractéristiques des flottilles (type de pêcherie par catégorie numérique), l'effort de pêche par type et catégorie de taille des navires, nombre de carrés de 1º visités par la flottille par année pendant la période, les prises, l'effort et la CPUE par espèce pour les senneurs et les canneurs, ainsi que le poids moyen individuel par espèce et par engin. Des cartes de pêche sont également présentées indiquant le déploiement des flottilles dans l'atlantique, ainsi que la distribution spatiotemporelle des prises des senneurs européens et assimilés en 212 par rapport au scénario moyen de 27-211. RESUMEN En este documento se presenta un resumen de la actividad de la flota europea y asimilada de cerco y cebo vivo entre 1991-212. El documento contiene algunas características de la flota (número por tipo de pesca y categoría), el esfuerzo pesquero por tipos y categoría de tamaño del buque, número de cuadrículas de 1º x 1º visitadas por la flota, las capturas, el esfuerzo y CPUE por especies para cerco y cebo vivo, así como el peso promedio por especie y tipo de pesca. También se muestran mapas de pesca indicando el despliegue de la flota en el Atlántico, así como la distribución espacio-temporal de las capturas de la flota de cerco europea y asimilada en 212 en comparación con el promedio de 27-211. KEYWORDS Tuna fishery, yellowfin, skipjack, bigeye, baitboats, purse seiners, catch/effort, species composition, size composition. 1 Instituto Español de Oceanografía. Centro Oceanográfico de Canarias. Apdo. de Correos 1373. 388 Santa Cruz de Tenerife. Islas Canarias (ESPAÑA). 2 IRD, Centre de Recherche Halieutique Méditerranéenne et Tropicale de Sète Cedex-France. 3 Oficina Española de Pesca. Dakar (Senegal). 4 ISRA, Centre de Recherche Océanographique de Dakar-Thiaroye, B.P. 1286, Dakar, Senegal. Centre de Recherche Océanographique d Abidjan B.P. V-18, Abidjan, Côte d Ivoire. 264
References Anon. 1984. Informe del Grupo de Trabajo sobre Túnidos Tropicales Juveniles. Brest. Col. Vol. Sci. Pap. ICCAT 21(1): 289 pp. Fonteneau, A., 1981. Note sur le mode de calcul de la P.U.E. des seneurs FISM. Vol. Sci. Pap. ICCAT 1(2): 47-411PP. Pallarés, P. y Ch. Petit, 1998. Túnidos tropicales: nueva estrategia de muestreo y tratamiento de datos para estimar la composición específica de las capturas y sus distribuciones de tallas. Vol. Sci. Pap. ICCAT 48 (2):23 246 pp. Pianet, R., A. Delgado, L. Floch, J. Ariz, A. Damiano, I. Sabate, Y. Kouassi et F.N Gom. 212. Statistiques de la pêcherie thonière europeenne et assimilée dans l océan Atlantique durant la période 1991-21. Col. Vol. Sci.Pap. ICCAT, 68(3) : 886-914. Table 1. Catches by species (tones) of European and associated purse-seine fleet. ALL Year YFT SKJ BET ALB Others Total 1991 92476 1236 14188 416 173 23431 1992 9676 87244 1823 218 12 292 1993 912 12487 387 14 1246 2483 1994 8862 1633 32379 179 2239 229391 199 84684 9928 296 412 232 21173 1996 82476 83928 26 28 3799 19468 1997 68311 624 1918 118 2733 147284 1998 73339 6439 12622 434 36 14898 1999 8248 7684 193 264 24 129 2 6419 64493 13698 32 1741 14414 21 7798 6918 143 24 246 1431 22 727 4868 14282 39 18 13864 23 6643 73424 1433 38 161 1639 24 326 7733 1816 19 1784 14288 2 49326 89 968 33 128 11981 26 49892 476 1919 441 1216 1124 27 43183 4178 1794 4 1972 11172 28 6276 8269 1263 76 182 13326 29 6713 6296 1679 149 278 14981 21 6271 797 199 33 2329 19749 211 177 8444 21368 146 1967 193 212 6949 9341 17681 36 3112 173443 26
Table 2. Catches by species (tones), on logs, of European and associated purse-seine fleet. Objects Year YFT SKJ BET ALB Others TOTAL 1991 177 8233 12193 6 97 111274 1992 18121 6424 1466 24 69 9892 1993 1963 76822 2221 6 798 11949 1994 234 6723 26478 11 118416 199 2124 774 2198 1937 1249 1996 2246 7123 2186 33 116362 1997 12378 389 1328 2227 6647 1998 1869 29833 1383 194 2989 1999 1236 39971 1269 181 98 66192 2 1288 44 11164 1487 79 21 1166 484 11611 1 2222 7184 22 1126 36947 11262 3 881 662 23 1266 4394 11198 11 114 68914 24 11913 2419 986 1267 7468 2 1818 48329 7827 28 1442 68443 26 1328 4887 6479 1 1148 8843 27 9921 364 797 2 196 69841 28 1426 1671 133 1639 7796 29 12191 819 12744 1 236 849 21 189 68124 1496 13 2222 1128 211 1326 77429 17778 16 1782 11266 212 1337 88983 1348 1 2822 11863 Table 3. Catches by species (tones), on free schools, of European and associated purse-seine fleet. Free School Year YFT SKJ BET ALB Others TOTAL 1991 7671 4326 199 41 764 12377 1992 788 21819 369 2494 6 1727 1993 7448 483 8642 1444 448 1293 1994 64662 3861 91 179 724 1197 199 63439 234 3497 47 36 91213 1996 6223 1272 3146 28 746 7916 1997 933 2161 2638 118 889 1998 6247 266 2239 434 1161 9299 1999 4888 36874 2898 83 12 86764 2 13 19439 234 32 24 7364 21 6433 1334 2419 23 238 83446 22 63681 11121 32 36 126 77984 23 3382 29483 31 27 47 8672 24 41294 24614 173 19 17 68173 2 388 118 189 86 1138 26 3964 6669 444 44 69 1181 27 33261 3814 3197 43 1 4331 28 4832 698 2268 71 163 742 29 4912 4771 447 148 213 6491 21 46181 7833 413 291 17 841 211 38316 716 39 13 18 49237 212 4392 638 4223 34 29 488 266
Table 4. Purse seine number by size categories and carrying capacity of the European and associated fleet. Year -4 41-6 61-8 81-12 121-2 > 2 Total C. capacity 1991 28 11 18 8 1 71 41978 1992 3 27 9 16 9 1 6 44296 1993 3 24 1 16 1 1 64 41227 1994 3 24 9 14 8 1 9 41122 199 1 24 9 14 7 38196 1996 2 23 9 13 7 4 377 1997 1 23 9 13 6 2 397 1998 1 2 7 1 1 44 29988 1999 1 21 9 41 2877 2 1 2 7 1 3 41 2738 21 1 18 7 12 6 44 3714 22 1 19 1 6 41 236 23 1 16 3 11 4 3 2681 24 1 14 3 11 34 2311 2 1 2 1 27 2186 26 1 2 7 24 1774 27 9 3 8 7 27 1914 28 9 4 9 9 31 23211 29 7 4 14 11 36 341 21 6 4 13 11 34 32213 211 6 4 13 1 33 31417 212 4 13 1 32 297 Table. Purse seine number from the European and associated fleet according to their flag. Flag 1991 1992 1993 1994 199 1996 1997 1998 1999 2 21 22 23 24 2 26 27 28 29 21 211 212 Neth. Antilles 3 3 3 3 3 3 2 3 3 1 1 1 3 3 3 4 Belize 1 1 1 2 1 1 1 Cape Verde 2 2 2 2 2 2 2 2 El Salvador 1 Spain 37 37 3 3 24 24 2 19 19 19 17 16 1 1 1 8 13 1 16 1 1 14 France 23 17 18 18 17 16 19 1 1 14 17 17 14 12 9 7 7 1 1 9 9 Ghana 1 1 1 1 1 1 1 1 1 1 1 1 1 Guatemala 1 2 2 2 2 2 1 1 1 1 Guina Conakry 2 2 2 Honduras 1 Italy 1 1 Liberia 2 1 Malaysia 1 Malta 1 1 1 Morocco 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Norway 1 Panama 7 7 7 6 2 1 1 1 1 1 3 3 3 3 2 3 2 2 Seychelles 1 1 1 St Vincent 2 4 4 2 3 2 2 3 1 3 3 Vanuatu 1 2 2 2 2 2 1 Venezuela 2 1 Total PS 73 67 64 62 7 3 4 41 43 46 41 36 34 28 2 27 31 37 3 33 33 267
Table 6. Carrying capacity and fishing efforts (raw fishing days and searching days) of the European and associated purse seine fleet. Year C.Capaciy F. days S. days 1991 41978 1636 13712 1992 44296 1749 1891 1993 41227 16428 14677 1994 41122 19 14233 199 38196 14789 1389 1996 377 14672 13118 1997 397 12784 114 1998 29988 1294 11223 1999 2877 11732 179 2 2738 179 9396 21 3714 11346 1123 22 236 9826 8818 23 2681 8964 7741 24 2311 822 77 2 2186 711 629 26 1774 727 36 27 1914 613 38 28 23211 786 698 29 342 88 7623 21 32213 9262 827 211 31417 896 767 212 297 86 7182 Table 7. Catches by species (tones) of European and associated bait boat fleet. Year YFT SKJ BET ALB Others TOTAL 1991 4986 211 2831 3 988 1992 346 19 23 2 7722 1993 3147 39 2741 3 891 1994 3474 334 3269 21 1299 199 2298 3772 3188 117 9376 1996 2313 273 3766 8782 1997 1878 671 3 227 11181 1998 82 119 383 24 14748 1999 3179 6714 7236 83 17931 2 147 776 96 342 134 21 1694 7882 4969 37 1483 22 349 9167 2721 28 1411 23 2773 136 212 49 1691 24 2887 976 2646 1 129 2 2146 142 2328 4 162 19682 26 2187 912 2674 1319 1191 27 168 11382 222 13 16819 28 186 19 1431 133 14428 29 211 12693 284 9 16968 21 2266 126 24 22 14764 211 3324 1949 148 31 2132 212 2793 17721 13 223 21767 268
Table 8. Bait boats number by size categories and carrying capacity of the European and associated fleet. Bait boat -4 Carrying Year Total capacity 1994 14 14 3 199 14 14 367 1996 14 14 332 1997 16 16 448 1998 18 18 48 1999 19 19 66 2 24 24 77 21 1 1 747 22 19 19 76 23 24 24 693 24 22 22 81 2 18 18 874 26 17 17 98 27 16 16 86 28 18 18 776 29 17 17 81 21 14 14 642 211 14 14 1461 212 14 14 1463 Table 9. Bait boats number from the European and associated fleet according to their flag. Pavillon 1991 1992 1993 1994 199 1996 1997 1998 1999 2 21 22 23 24 2 26 27 28 29 21 211 212 Antilles Holl. 1 3 2 3 2 2 Cap Vert 1 1 1 1 1 1 1 1 Espagne 3 4 6 7 7 7 9 11 12 9 6 7 7 7 7 7 France 9 8 9 7 8 7 7 7 4 4 4 4 3 1 1 1 Panama 1 1 Sénégal 1 1 2 3 1 2 3 3 6 2 2 4 3 6 7 7 7 6 6 6 St Vincent 1 1 2 2 2 1 1 1 Total 1 9 11 1 1 14 17 2 2 26 16 19 24 22 21 1 16 18 17 14 14 14 canneurs 269
Catch (t x 1) Searching days (x 1) No. Sets (x1) Catch (t x 1) Searching days (x 1) No. Sets (x1) Catch (t x 1) Searching days (x 1) No. Sets (x1) 3. All 18. 16. 2. 14. 2. 12. 1. 1. 8. 1. 6. 4.. 2... 1991 1994 1997 2 23 26 29 212 YFT SKJ BET S. days Set + 14. Objects 18. 12. 16. 14. 1. 12. 8. 1. 6. 8. 4. 6. 4. 2. 2... 1991 1994 1997 2 23 26 29 212 YFT SKJ BET S. days Set + 14. Free School 18. 12. 16. 14. 1. 12. 8. 1. 6. 8. 4. 6. 4. 2. 2... 1991 1994 1997 2 23 26 29 212 YFT SKJ BET S. days Set + Figure 1. Catches by species and fishing effort in searching days of the European and associated purse-seine fleet according to their fishing mode: combined (top), logs (middles) and free schools (bottom). 266
3 3 2 2 1 1 - - 1-1 - 2 2 3 2 3 2 2 1 1 - - 1-1 - 2 2 2 2 2 1 1 1 1 2 2 1 1 1 1 - - - - - 1-1 - 1-1 - 1-1 - 1-1 - 2-2 - 2 3 3 2 2 1 1 ATPST111212 YFT - - 1-1 - 2-2 3 3 BET 3 2 2 1 1 ATPST11711 YFT - SKJ - 1-1 - 2 3 BET SKJ Figure 2. Distribution of the catches by species of the European and associated purse-seine fleet in 212 (left) and on average over the 27-211period (right). 3 3 2 2 1 1 - - 1-1 - 2 3 3 2 2 1 1 - - 1-1 - 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 - - - - - 1-1 - 1-1 - 1-1 - 1-1 - 2-2 - 2 3 3 2 2 1 1 ATPSO111212 YFT - BET - 1-1 - 2-2 3 1 3 2 2 1 1 ATPSO11711 YFT - - 1-2 1 BET SKJ - 1 SKJ Figure 3. Distribution of the catches by species of the European and associated purse-seine fleet, on log schools, in 212 (left) and on average over the 27-211period (right). 3 3 2 2 1 1 - - 1-1 - 2 3 3 2 2 1 1 - - 1-1 - 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 - - - - - 1-1 - 1-1 - 1-1 - 1-1 - 2-2 - 2 3 3 ATPSL111212 2 2 1 1 YFT - BET - 1-1 - 2 3-2 1 3 ATPSL11711 2 2 1 1 YFT - BET - 1-1 - 2 1 SKJ SKJ Figure 4. Distribution of the catches by species of the European and associated purse-seine fleet, on free schools, in 212 (left) and on average over the 27-211period (right). 2661
Days (x1) Carrying capacity No. Purse seiners Carrying capacity No. Purse seiners Carrying capacity 8 7 6 4 3 2 1 1991 1994 1997 2 23 26 29 212 Total C.Capacity 4 4 3 3 2 2 1 1 8 7 6 4 3 4 3 2 2 1 1 1991 1994 1997 2 23 26 29 212-4 41-6 61-8 81-12 121-2 > 2 C.Capacity Figure. Boats number (left) and boats number per TJB category (right) and carrying capacity of European and associated purse-seine fleet. 2 18 16 14 12 1 8 6 4 2 1991 1994 1997 2 23 26 29 212 4 4 3 3 2 2 1 1 Fishing days Searching days Carrying capacity Figure 6. Fishing effort of European and associated purse-seine fleet in number of fishing days, searching days and carrying capacity. 2662
No. CWP No. Sets (x1) % Null sets 12 1 8 6 4 2 3% 3% 2% 2% 1% 1% % % 1991 1994 1997 2 23 26 29 212 No.SetsObject No.Sets F.School % Null Object % Null F.School Figure 7. Number of sets and % of null sets according to the fishing mode. 1 9 8 7 6 4 3 2 1 1991 1994 1997 2 23 26 29 212 No.CWP visited No.CWP with Set No.CWP with catch No.CWP Eff>12 hrs No.CWP Eff>6 hrs Figure 8. Explored CWP number squares according to various levels of effort. 2 3 3 2 2 1 1 - - 1-1 - 2 2 2 2 1 1 1 1 - - - 1-1 - 1-1 - 2 3 3 2 2 1 1 - Efforts jmer ATPST111212 EFF 3-1 - 1-2 - 2 Figure 9. Distribution of the fishing effort (days at sea) of the European and associated purse-seine fleet in 212. 2663
Catch (t) by fishing day Catch (t) by positive set Catch (t) by fishing day Catch (t) by positive set Catch (t) by fishing day Catch (t) by positive set 2 3 3 2 2 1 1 - - 1-1 - 2 2 2 2 1 1 1 1 - - - 1-1 - 1-1 - 2 3 3 2 2 1 1 - Efforts jmer ATPST11711 EFF 3-1 - 1-2 - 2 Figure 1. Distribution of the fishing effort (days at sea) of the European and associated purse-seine fleet on average over the 27-211 period. 2. All 2. 1. 1... 1991 1994 1997 2 23 26 29 212 YFT SKJ BET Total 4. All 3. 3. 2. 2. 1. 1... 1991 1994 1997 2 23 26 29 212 YFT SKJ BET Total 16. Objects 14. 12. 1. 8. 6. 4. 2.. 1991 1994 1997 2 23 26 29 212 YFT SKJ BET Total 4. Objects 4. 3. 3. 2. 2. 1. 1... 1991 1994 1997 2 23 26 29 212 YFT SKJ BET Total 12. Free School 1. 8. 6. 4. 2.. 1991 1994 1997 2 23 26 29 212 YFT SKJ BET Total 4. Free School 3. 3. 2. 2. 1. 1... 1991 1994 1997 2 23 26 29 212 YFT SKJ BET Total Figure 11. Catch per unit of effort of the European and associated purse-seine fleet tones per fishing days, (left) and tones per positive set (right), according their fishing mode, combined (top), logs (middle) and free schools (bottom). 2664
No (x1) No (x1) No (x1) No (x1) No (x1) No (x1) No (x1) No (x1) No (x1) YFT - All SKJ - All BET - All 8 3 6 7 6 4 3 2 1 212 27-211 3 2 2 1 1 212 27-211 4 3 2 1 212 27-211 2 4 6 8 1 12 14 16 18 2 3 4 6 7 8 2 4 6 8 1 12 14 16 18 YFT - Objects 7 6 4 3 2 1 2 4 6 8 1 12 14 16 18 212 27-211 SKJ - Objects 3 3 2 2 1 1 2 3 4 6 7 8 212 27-211 BET - Objects 4 4 3 3 2 2 1 1 2 4 6 8 1 12 14 16 18 212 27-211 YFT - F.School SKJ - F.School BET - F.School 8 2 2 7 6 2 2 4 3 212 27-211 1 1 212 27-211 1 1 212 27-211 2 1 2 4 6 8 1 12 14 16 18 2 3 4 6 7 8 2 4 6 8 1 12 14 16 18 Figure 12. Size distribution of the catches by species (YFT, left; SKJ, middle; BET, right), by fishing mode (combined, top; Logs, middle; Free schools, bottom), in 212 and on average over 27 211 period. 266
Average weight (kg) Average weight (kg) Average weight (kg) 6 YFT 4 3 2 Objects F.School Total 1 1991 1994 1997 2 23 26 29 212 3. SKJ 2. 2. 1. 1. Objects F.School Total.. 1991 1994 1997 2 23 26 29 212 2 BET 2 1 1 Objects F.School Total 1991 1994 1997 2 23 26 29 212 Figure 13. Average weight of the European and associated purse-seine fleet catches by species (YFT, top; SKJ, middle; BET, bottom) according to their fishing mode. 2666
Catch (t) by fishing day Catch (t x 1) Fishing days (x 1) 2. Bait Boat fleet 4. 4. 2. 3. 3. 1. 2. 1. 2. 1.. 1.... 1991 1994 1997 2 23 26 29 212 YFT SKJ BET F. days Figure 14. Catches by species and fishing effort in fishing days of the European and associated bait boat fleet. 8. 7. Bait boat fleet 6.. 4. 3. 2. 1.. 1991 1994 1997 2 23 26 29 212 YFT SKJ BET Total Figure 1. Catch per unit of effort of the European and associated bait boat fleet, tones per fishing days, by species. 2667
Average weight (kg) No (x1) No (x1) No (x1) SKJ - BB YFT - BB BET - BB 7 6 4 3 2 1 2 3 4 6 7 212 27-211 4 4 3 3 2 2 1 1 2 4 6 8 1 12 14 16 18 212 27-211 9 8 7 6 4 3 2 1 2 4 6 8 1 12 14 16 18 212 27-211 Figure 16. Size distribution of the catches by species (YFT, left; SKJ, middle; BET, right) in 212 and on average over 27 211 period. 14 Bait boat fleet 12 1 8 6 4 2 1991 1994 1997 2 23 26 29 212 YFT SKJ BET Figure 17. Average weight of the European and associated bait boat fleet catches by species. 2668