|
|
|
|
|
| Fonteneau, A.. |
| This document present the maximum daily duration of searching time by the purse seiners in intertropical areas. The daily duration of daylight varies according the latitude and season, and searching for tuna schools can be conducted only during this time (e.g. between the times of sunrise and of sunset). This maximum daily searching time should be routinely used and should preferably replace the constant 13 or 12 hours of standard daily searching time presently used for French and Spanish purse seiners in the Indian and Atlantic Oceans. |
| Tipo: Proceedings Paper |
Palavras-chave: Purse seiners; Tuna fisheries; Seasonality. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/63 |
| |
|
|
| Fonteneau, A.; Marsac, F.; Pianet, R.; Stequert, B.. |
| This document attempts to develop an overview of the future needs for tuna research that should be recommended by the IOTC. Because of the spectacular increase of the tuna catches in the Indian Ocean during the last 15 years, it is necessary to conduct active research on the major stocks, giving a high priority to all research that will allow a reliable assessment of the stock status. A general problem in the tuna research conducted in the Indian Ocean is the lack of large-scale tagging programs. Such programs should be a priority in future Indian Ocean tuna research. Other research should also be conducted simultaneously upon various biological parameters which are fundamental to stock assessment. The fishery associated with artificial floating objects,... |
| Tipo: Proceedings Paper |
Palavras-chave: Catch/effort Purse seining Catching method ISW; Indian Ocean. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/61 |
| |
|
|
|
