REPORTS - BOBP/REP/36
Hilsa Investigations in Bangladesh
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, June 1987
Table of Contents
|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
The Hilsa ilisha constitutes the largest single-species fishery of Bangladesh. It accounts for about 30% of the country’s total fish production; the fishery employs more than 1.5 million people.
At the request of the Bangladesh Government the BOBP’s project “Marine Fishery Resources Management in the Bay of Bengal” conducted a series of investigations on the Hilsa ilisha during 1985-86. As a first step, current literature on the biology and fishery of Hilsa ilisha in the Upper Bay of Bengal was reviewed and published in October 1985 as BOBP/WP/37.
The Hilsa investigations covered marine, estuarine and riverine environments; the main areas of investigation were catch statistics, biological studies, racial studies and experimental fishing. Four sampling stations were selected for the investigation, Chittagong and Cox’s Bazar being the marine stations. Five biologists were trained in the programme, and the data obtained were processed later at a training session in Colombo.
This paper sets out the results of the investigations, which were conducted under the overall supervision of BOBP’s Senior Fishery Biologist, Dr. K. Sivasubramaniam.
A consultant, Dr. B.T. Antony Raja, reviewed literature on the subject, trained national biologists, helped them to prepare the Annexures found in this report, and in general monitored the programme. Mr. J. Hertel Wulff (BOBP Biologist - Associate Professional Officer), stationed at Chittagong, assisted the national biologists and processed the data using the micro computer Apple Ile. Mr. M.Van der Knaap (Biologist - Associate Professional Officer) and Mr. T. Nishida (Statistician - Associate Professional Officer) also helped the five Bangladesh biologists- Mr. M. Hossain, Mr. N. N. Das, Mr. Sujjat Al Azad, Mr. Q. Mahbubul Huq and Mr. M. Serajul Islam-to process the data.
2. PREPARATORY ACTIVITIES
2.1 REVIEW OF PAST RECORDS
2.2 FIRST WORKING GROUP MEETING
3. IMPLEMENTATION OF WORK PROGRAMME
3.1 TRAINING OF BIOLOGISTS
3.2 IDENTIFICATION OF SAMPLING STATIONS
3.4 WORK CALENDAR
4.1 COMMERCIAL FISHERY
4.2 EXPERIMENTAL FISHING
4.3 SIZE COMPOSITION IN THE COMMERCIAL FISHERY
4.4 MATURITY AND SPAWNING
4.5 CURRENT STATE OF EXPLOITATION
4.6 RACIAL STUDIES
4.7 ECONOMIC STUDIES
1. HILSA SAMPLING STATIONS
2. WORK CALENDAR
1. HILSA FISHERY OF BANGLADESH IN 1985-86 By M. Hossain, S.A. Azad, Q.M. Huq, M.S. Islam and N.N. Das
2. NOTES ON EXPERIMENTAL FISHING FOR HILSA SHAD IN 1985-86 By Q.M. Huq, Ms. Islam, S.A. Azad, M. Hossain and N.N. Das
3. SOME OBSERVATIONS ON SIZE GROUPS IN THE FISHERY AND ON MIGRATION OF HILSA IN BANGLADESH WATERS DURING 1985-86 By S.A. Azad, J. Hertel-Wulff, M. Hossain, MS. Islam, Q.M. Huq and N.N. Das
4. RESULTS OF THE ANALYSIS OF HILSA ILISHA LENGTH FREQUENCIES BY M. Van Der Knaap, K. Sivasubramniam, S.A. Azad, M.S. Islam, M. Hossain, Q.M. Huq and N.N. Das
5. MATURITY AND SPAWNING OF HILSA SHAD, HILSA ILISHA OF BANGLADESH BY M.S. Islam, Q.M. Huq, M. Hossain, S.A. Azad and N.N. Das
6. ANALYSIS OF SOME MORPHOMETRIC AND MERISTIC CHARACTERS OF HILSA ILISHA OF BANGLADESH WATERS By N.N. Das, T. Nishida, S.A. Azad, Ms. Islam, M. Hossain and Q.M. Huq