REPORTS - BOBP/REP/41
|
REPORTS - BOBP/REP/41 Studies of the Tuna Resource in the EEZs of Sri Lanka and Maldives |
|
Executing Agency: FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Funding Agency: UNITED NATIONS DEVELOPMENT PROGRAMME Marine Fishery Resources Management in the Bay of Bengal. Colombo, Sri Lanka, May 1988 |
| The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. |
All rights reserved. Reproduction and dissemination of material in this information product for educational or other non-commercial purposes are authorized without any prior written permission from the copyright holders provided the source is fully acknowledged. Reproduction of material in this information product for resale or other commercial purposes is prohibited without written permission of the copyright holders. Applications for such permission should be addressed to the Chief, Publishing and Multimedia Service, Information Division, FAO, Viale delle Terme di Caracalla, 00100 Rome, Italy or by email to [email protected]
© FAO 2004
|
Tuna are an important fishery resource in the exclusive economic zones of Maldives and Sri Lanka. In June 1984, a working group comprising representatives from the two countries met in Sri Lanka to take stock of available knowledge on tuna, identify gaps in that knowledge and evolve a workplan to fill the gaps. These were summarized in BOBP/WP/31. The present report covers later investigations and updates knowledge on the tuna resources in the EEZs of Maldives and Sri Lanka. During this work, the working group met in Male, Maldives (October 1985) and in Colombo, Sri Lanka (September 1986). These meetings discussed the sampling programmes conducted by Maldives and Sri Lanka. This report, as well as the meetings of the tuna working group and the sampling programme were sponsored by the “Marine Fishery Resources Management” component (RAS/81/051) of the Bay of Bengal Programme (BOBP). The project commenced January 1983 and terminated in December 1986. It was funded by the UNDP (United Nations Development Programme). Its immediate objective was to improve the practice of fishery resources assessment among participating countries (Bangladesh, Sri Lanka, Maldives, Malaysia, Thailand, Indonesia) and to stimulate and assist in joint management activities among countries sharing fish stocks. |
SUMMARY
1. INTRODUCTION
2. THE FISHERIES
3. CATCH RATES
4. SEASONALITY
5. STANDARDIZATION OF POLE AND LINE EFFORT
6. SIZE COMPOSITION, FIRST ENTRY SIZE GROUP AND SEASONAL MOVEMENTS
7. GROWTH PARAMETERS
8. SEX RATIO
9. LENGTH AT FIRST MATURITY
10. GONAD MATURITY AND SPAWNING
11. MORPHOMETRIC CHARACTERS
12. MIGRATION
13. RECRUITMENT
14. STOCK IDENTITY
15. OTHER TUNAS
16. LONGLINE CATCH RATES IN THE SURROUNDING AREA
17. PRESENT STATE OF TUNA RESOURCES
18. RECOMMENDATIONS
19. REFERENCES CITEDTABLES
1. Peak fishing seasons of skipjack tuna
2. Catch per man-day in the pole and line fishery
3. Age-at-length values for skipjack and yellowfin tuna
4. Summary results of the analysis of morphometric data for yellowfin tuna
5. Summary results of the analysis of morphometric data for skipjack tuna1. Participants in the Second and Third Working Group Meetings
2. Skipjack fishery in the Maldives by Ahamed Hafiz
3. Yellowfin tuna in the Maldives by R.C. Anderson
5. Tuna fisheries - an update for Sri Lanka by L. Joseph and N.M. Moyiadeen