STATISTICS OF THE EUROPEAN AND ASSOCIATED PURSE SEINE AND BAITBOAT FLEETS, IN THE ATLANTIC OCEAN

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1 SCRS/213/149 Collect. Vol. Sci. Pap. ICCAT, 7(6): (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 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 RESUMEN En este documento se presenta un resumen de la actividad de la flota europea y asimilada de cerco y cebo vivo entre 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 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 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

2 References Anon Informe del Grupo de Trabajo sobre Túnidos Tropicales Juveniles. Brest. Col. Vol. Sci. Pap. ICCAT 21(1): 289 pp. Fonteneau, A., Note sur le mode de calcul de la P.U.E. des seneurs FISM. Vol. Sci. Pap. ICCAT 1(2): PP. Pallarés, P. y Ch. Petit, 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): pp. Pianet, R., A. Delgado, L. Floch, J. Ariz, A. Damiano, I. Sabate, Y. Kouassi et F.N Gom Statistiques de la pêcherie thonière europeenne et assimilée dans l océan Atlantique durant la période Col. Vol. Sci.Pap. ICCAT, 68(3) : Table 1. Catches by species (tones) of European and associated purse-seine fleet. ALL Year YFT SKJ BET ALB Others Total

3 Table 2. Catches by species (tones), on logs, of European and associated purse-seine fleet. Objects Year YFT SKJ BET ALB Others TOTAL 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

4 Table 4. Purse seine number by size categories and carrying capacity of the European and associated fleet. Year > 2 Total C. capacity Table. Purse seine number from the European and associated fleet according to their flag. Flag Neth. Antilles Belize Cape Verde El Salvador 1 Spain France Ghana Guatemala Guina Conakry Honduras 1 Italy 1 1 Liberia 2 1 Malaysia 1 Malta Morocco Norway 1 Panama Seychelles St Vincent Vanuatu Venezuela 2 1 Total PS

5 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 Table 7. Catches by species (tones) of European and associated bait boat fleet. Year YFT SKJ BET ALB Others TOTAL

6 Table 8. Bait boats number by size categories and carrying capacity of the European and associated fleet. Bait boat -4 Carrying Year Total capacity Table 9. Bait boats number from the European and associated fleet according to their flag. Pavillon Antilles Holl Cap Vert Espagne France Panama 1 1 Sénégal St Vincent Total canneurs 269

7 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 YFT SKJ BET S. days Set Objects YFT SKJ BET S. days Set Free School 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

8 ATPST YFT BET ATPST11711 YFT - SKJ 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 period (right) ATPSO YFT - BET ATPSO11711 YFT 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 period (right) ATPSL YFT - BET ATPSL YFT - BET 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 period (right). 2661

9 Days (x1) Carrying capacity No. Purse seiners Carrying capacity No. Purse seiners Carrying capacity Total C.Capacity > 2 C.Capacity Figure. Boats number (left) and boats number per TJB category (right) and carrying capacity of European and associated purse-seine fleet 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

10 No. CWP No. Sets (x1) % Null sets % 3% 2% 2% 1% 1% % % 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 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 Efforts jmer ATPST EFF Figure 9. Distribution of the fishing effort (days at sea) of the European and associated purse-seine fleet in

11 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 Efforts jmer ATPST11711 EFF Figure 1. Distribution of the fishing effort (days at sea) of the European and associated purse-seine fleet on average over the period. 2. All YFT SKJ BET Total 4. All YFT SKJ BET Total 16. Objects YFT SKJ BET Total 4. Objects YFT SKJ BET Total 12. Free School YFT SKJ BET Total 4. Free School 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

12 No (x1) No (x1) No (x1) No (x1) No (x1) No (x1) No (x1) No (x1) No (x1) YFT - All SKJ - All BET - All YFT - Objects SKJ - Objects BET - Objects YFT - F.School SKJ - F.School BET - F.School 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 period. 266

13 Average weight (kg) Average weight (kg) Average weight (kg) 6 YFT Objects F.School Total SKJ Objects F.School Total BET Objects F.School Total 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

14 Catch (t) by fishing day Catch (t x 1) Fishing days (x 1) 2. Bait Boat fleet YFT SKJ BET F. days Figure 14. Catches by species and fishing effort in fishing days of the European and associated bait boat fleet Bait boat fleet 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

15 Average weight (kg) No (x1) No (x1) No (x1) SKJ - BB YFT - BB BET - BB Figure 16. Size distribution of the catches by species (YFT, left; SKJ, middle; BET, right) in 212 and on average over period. 14 Bait boat fleet YFT SKJ BET Figure 17. Average weight of the European and associated bait boat fleet catches by species. 2668