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| Registros recuperados: 62 | |
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| Mees, C. C.. |
| Schooners are the largest category of vessel participating in the local fishery. They are fully decked fishing boats equipped with inboard engines and fish with handlines or electric fishing reels. They account for about 15% of the total artisanal catch, but commercially valuable demersal species predominate. Their economic importance is thus greater than the catch volumes would indicate. Furthermore, they have the greatest range and are able to undertake longer fishing trips than other local vessels. They, or a similar class of vessel, are thus considered vitally important for the future development of the local fishery, where the potential for expansion from demersal species is considered to be offshore on the more distant banks and island groups. The... |
| Tipo: Report |
Palavras-chave: Artisanal fishing; Fishery statistics; Catch/effort; Fishing effort; Fishing gear. |
| Ano: 1990 |
URL: http://hdl.handle.net/1834/5128 |
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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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| Nishida, T.. |
| Yellowfin tuna (Thunnus albacares, YFT) in the Indian Ocean has been exploited for more than 200 years (Anderson and Hafiz, 1985), while official statistics are available for some 40 years. In this region, the YFT resource has been commercially important as a protein source for both developing and developed countries. Hence, it is essential to manage and conserve YFT resources properly for future generations. To this end, an assessment of the YFT stock is presented in this paper, in order to provide fundamental information for its management. More than 80% of the YFT catch from the Indian Ocean comes from the western part (Figure 1), so this assessment is focused on that part. In this study, the stock structure of the Indian Ocean YFT is assumed to be two... |
| Tipo: Report |
Palavras-chave: Tuna fisheries; Fishery statistics. |
| Ano: 1994 |
URL: http://hdl.handle.net/1834/520 |
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| Abohweyere, P. O.. |
| Galeoides decadactylis is a commercially important species of the family polynemidae and constituted 10-20% by weight of the total landing of the trawl fishery in the 60s (Longhurst 1964a). Between 1971 and 1985 landing figures of the fish showed a fall of 7 – 8% by weight of total fish landed (FDF and NIOMR. 1986). Length frequency distribution showed the average size of fish landed by the commercial fishing company was 23.03cm while that of the Institute’s Research vessel was 18.89cm. Catch curve analysis showed that the fully exploited length ranged between 17 and 31cm. The length at infinity (Lx) obtained was 47.75cm while the growth coefficient (Z) was 0.20. Estimated total mortality (z) was 0.36. The stock size estimates was 10,090.54 tonnes,... |
| Tipo: Report |
Palavras-chave: Fishery surveys; Fishery statistics. |
| Ano: 1989 |
URL: http://hdl.handle.net/1834/2438 |
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| Registros recuperados: 62 | |
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