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| Pianet, R.; Pallares, P.; Petit, Ch.. |
| The difficulties associated with tropical tuna sampling strategies, particularly those resulting from the large-scale adoption of the method of fishing on logs, have caused the Indian Ocean tuna scientists concern since the beginning of the purse seine fishery, as well as the ICCAT SCRS (Standing Committee for Research and Statistics of the International Commission for the Conservation of Atlantic Tunas) in recent years. Upon the recommendation of this Committee, in 1996 Spain and France embarked on a European Union project aiming to study the consequences of this new fishing tactic on the estimated catch by species and by size, and to implement a new sampling strategy so as to improve the accuracy of the statistics. Many specific analyses have been... |
| Tipo: Proceedings Paper |
Palavras-chave: Purse seines; Tuna fisheries. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/971 |
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| Soto, M.; Morón, J.; Pallares, P.. |
| The Spanish purse seine fleet operates in a wide area of the Indian Ocean since 1984. A logbooks system provides detailed information of catches (set by set) and effort. Together with this information, an intensive work of interview during 4 years (1994-1997) has provided technical equipment data. These data have been used to estimate standardized catch per unit effort (CPUE) indices of abundance for yellowfin from the Indian Ocean. Standardized catch rates have been estimated using the Generalized Linear Model (GLM) approach. The model proposed includes factors related with the stock abundance together with factors related with catchability changes. |
| Tipo: Proceedings Paper |
Palavras-chave: Catch rate; Purse seines; Yellow tail fisheries. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/990 |
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| Delgado de Molina, A.; Pallares, P.; Pianet, R.; Ariz, J.. |
| This document contains summary statistics of the NEI4 purse seiner fleet fishing in the Indian Ocean, as well as some information about how the data are collected. The sampling scheme, the sampling coverage, maps and diagrams representing the fishing pattern of this fleet by time and area strata. Data collection and the sampling programme for this fleet are the same as those used for the Spanish and French purse seine fleets. |
| Tipo: Proceedings Paper |
Palavras-chave: Purse seines. |
| Ano: 1999 |
URL: http://hdl.handle.net/1834/975 |
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| Pallares, P.; Delgado de Molina, A.; Pianet, R.; Ariz, J.. |
| This document contains summary statistics of the NEI4 purse seiner fleet fishing in the Indian Ocean, as well as some information about how the data are collected. The sampling scheme, the sampling coverage, maps and diagrams representing the fishing pattern of this fleet by time and area strata. Data collection and the sampling programme for this fleet are the same as those used for the Spanish and French purse seine fleets. 'Research Group' Instituto Espanol de Oceanografia. Corazon de Maria, 8. 28002, Madrid. Spain ; Instituto Espanol de Oceanografia. PO Box 1373. S/C Tenerife. Spain ; Centre IRD de Motpellier, BP 5045 - 34 032 Montpellier Cedex01. France. |
| Tipo: Proceedings Paper |
Palavras-chave: Fishing vessels; Fishery statistics; Purse seine; Data collections; Sampling. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/68 |
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