COVER

REPORT OF THE TECHNICAL CONSULTATION ON SMALL PELAGIC SPECIES OF THE STATISTICAL DIVISION WESTERN GULF OF GUINEA



TABLE OF CONTENTS

PROGRAMME FOR THE DEVELOPMENT OF FISHERIES
IN THE EASTERN CENTRAL ATLANTIC
FISHERY COMMITTEE FOR THE EASTERN CENTRAL ATLANTIC
CECAF/ECAF SERIES 89/47

Oceanographic Research Centre
Abidjan, Côte d'Ivoire
8–12 December 1987



This report has been prepared and published with support from the projects CGP/RAF/215/USA - Support to the CECAF project (West Africa) and GCP/RAF/251/MUL - Assistance to the CECAF programme



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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
Rome, 1989
© FAO 1990


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TABLE OF CONTENTS

1. INTRODUCTION

2. SUMMARY OF RESULTS OF THE PREVIOUS WORKING GROUPS AND PRESENTATION OF THE STUDY ON FISHERY-CLIMATE (ORSTOM)

3. HYDROGRAPHIC AND ENVIRONMENTAL CHARACTERISTICS OF THE SUB-REGION

3.1 Summary of the Côte d'Ivoire/Ghana upwelling oceanography

3.2 Calculation of upwelling indices and oceanographic conditions recorded as from 1980

4. DESCRIPTION OF THE PELAGIC FISHERIES

4.1 Côte d'Ivoire

4.2 Ghana

4.3 Benin

4.4 Togo

5. ANALYSIS OF FISHERY STATISTICS

5.1 Sardinella aurita

5.2 Sardinella maderensis

5.3 Engraulis encrasicolus

5.4 Scomber japonicus

6. ANALYSIS OF FISHING EFFORT

7. ANALYSIS OF LENGTH FREQUENCY

7.1 Côte d'Ivoire

7.2 Ghana

8. ANALYSIS OF CATCHES PER UNIT OF EFFORT USED AS ABUNDANCE INDEX

8.1 Sardinella aurita

8.2 Sardinella maderensis

9. ANALYSIS OF BIOLOGICAL DATA

9.1 Sardinella aurita

9.1.1 Reconstitution of the life cycle

9.1.2 Analysis of the historical evolution of Sardinella aurita abundance

9.2 Sardinella maderensis

10. STATE OF THE STOCKS

10.1 The case of Sardinella stocks

10.1.1 Global models

10.1.2 Analytical model

10.1.3 Conclusions on the state of Sardinella stocks

10.2 State of the anchovy stock

10.3 State of the mackerel stock (Scomber japonicus)

11. PROPOSAL FOR MANAGEMENT MEASURES

12. RECOMMENDATIONS

13. ADOPTION OF THE FINAL REPORT AND CLOSING