Report of the Ad Hoc Working Group on Sardinella Stocks from Congo to Southern Angola

Table of Contents

held at

Instituto Español de Oceanografía
Centro Costero de Canarias
Santa Cruz de Tenerife
Canary Islands
Spain

20-24 August 1979

INTERREGIONAL FISHERIES DEVELOPMENT AND MANAGEMENT PROGRAMME
INT/79/019

CECAF/ECAF 80/20 (En)

FISHERY COMMITTEE FOR THE EASTERN CENTRAL ATLANTIC

FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
UNITED NATIONS DEVELOPMENT PROGRAMME
Rome, July 1980

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.

The copyright in this book is vested in the Food and Agriculture Organization of the United Nations. The book may not be reproduced, in whole or in part, by any method or process, without written permission from the copyright holder. Applications for such permission, with a statement of the purpose and extent of the reproduction desired, should be addressed to the Director, Publications Division, Food and Agriculture Organization of the United Nations, Via delle Terme di Caracalla, 00100 Rome, Italy.

© FAO 1980

This electronic document has been scanned using optical character recognition (OCR) software and careful manual recorrection. Even if the quality of digitalisation is high, the FAO declines all responsibility for any discrepancies that may exist between the present document and its original printed version.

Table of Contents

1. INTRODUCTION

2. DESCRIPTION OF THE FISHERIES

2.1 THE CONGOLESE FISHERIES
2.2 THE ANGOLAN FISHERIES

3. FISHERIES DATA

3.1 TOTAL CATCH
3.2 FISHING EFFORT, AND CATCH PER UNIT OF FISHING EFFORT
3.3 SIZE COMPOSITION
3.4 AGE COMPOSITION

4. OCEANOGRAPHIC CONDITIONS

5. BIOLOGY OF SARDINELLA AURITA AND S. MADERENSIS

5.1 LENGTH AT FIRST MATURITY
5.2 LENGTH-WEIGHT RELATIONSHIP
5.3 REPRODUCTION

5.3.1 Sardinella aurita
5.3.2 Sardinella maderensis

5.4 GROWTH

5.4.1 Sardinella aurita
5.4.2 Sardinella maderensis

5.5 MORTALITY

5.5.1 Sardinella aurita
5.5.2 Sardinella maderensis

6. DISTRIBUTION AND MIGRATION

6.1 ACOUSTIC SURVEYS
6.2 OTHER STUDIES

6.2.1 Angola
6.2.2 Congo
6.2.3 Comparison with West Africa

7. EVALUATION

8. RESEARCH REQUIREMENTS

REFERENCES

Appendix 1: LIST OF PARTICIPANTS

Appendix 2: AGENDA

Appendix 3: LENGTH COMPOSITIONS

(a) CONGO
(b) ANGOLA

Appendix 4: AGE COMPOSITION DATA OF SARDINELLA SPP. LANDED IN POINTE NOIRE