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| Thomas, A.; Dufour, O.; Pianet, R.; Morón, J.. |
| The present data-recording system used in the Seychelles to compile the tuna purse-seine statistics in the WIO was established by ORSTOM at the beginning of the fishery (1982/3) for the French fleet, and then extended to the Seychelles Fishing Authority (SFA) and Madagascar in 1991-92 for all fleets. After several modifications, it has been working efficiently for the last ten years, making it possible to build a very comprehensive tuna database for the purse-seine fleets since the beginning of the fishery. The extension to Madagascar started in 1992, within the framework of the Regional Tuna Project. A specific laboratory, the(Unité Statistique Thonière d’Antsiranana (USTA) was installed, the work being done in collaboration between ORSTOM, the Direction... |
| Tipo: Report |
Palavras-chave: Fishery statistics; Purse seiners; Fishery data. |
| Ano: 1995 |
URL: http://hdl.handle.net/1834/515 |
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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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