COVER

REPORT OF THE CECAF AD HOC WORKING GROUP ON THE DEMERSAL AND SHRIMP RESOURCES OF THE CENTRAL GULF OF GUINEA DIVISION (34.3.5)



TABLE OF CONTENTS

PROGRAMME FOR THE DEVELOPMENT OF FISHERIES
IN THE EASTERN CENTRAL ATLANTIC
FISHERY COMMITTEE FOR THE EASTERN CENTRAL ATLANTIC		CECAF/ECAF SERIES 86/36

Held at the


Station de Recherches Halieutiques
Limbé, Cameroun
(6–10 May 1985)


This document has been prepared through combined assistance and financial support from project INT/81/014, project GCP/RAF/215/USA, Support to the CECAF project and from the FAO Regional Office for Africa


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FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
Rome, 1986
© FAO

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TABLE OF CONTENTS

1.INTRODUCTION
2.DESCRIPTION OF THE FISHERIES
 2.1Cameroon
  2.1.1The industrial fishery
  2.1.2The artisanal fishery
 2.2Nigeria
  2.2.1Industrial fishery
  2.2.2Artisanal fishery
 2.3Benin
  2.3.1Industrial fishery
 2.4Ivory Coast
  2.4.1Industrial fishery
 2.5Togo
 2.6Equatorial Guinea
  2.6.1Industrial fishery
  2.6.2Artisanal fishery
 2.7Sao Tomé and Principe
 2.8Conflicts between artisanal and industrial fleets
3.AVAILABLE STATISTICS
 3.1Cameroon
 3.2Nigeria
  3.2.1Catch
  3.2.2Fishing effort
  3.2.3Catch per unit effort
 3.3Ivory Coast
 3.4Benin
 3.5Equatorial Guinea
 3.6Sao Tomé and Principe
 3.7Togo
4.BIOLOGICAL DATA
5.ASSESSMENTS
 5.1Glogal production models
 5.2Demersal potential for Nigeria
 5.3Other assessments in Cameroon and Equatorial Guinea
6.RECOMMENDATIONS
 6.1Further research
 6.2Management
7.ADOPTION OF THE REPORT AND CLOSING CEREMONY
8.BIBLIOGRAPHY

LIST OF ANNEXES

  
1.List of participants
2.Annotated agenda
3.La pêche artisanale démersale camerounaise par J.-C. Njock
4.Pêche démersale industrielle en République Populaire du Bénin par A. Aziablé
5.Effort nominal de la flotte crevettiére ivoirienne pêchant au Nigéria (1970–1974) par J. Konan
6.Ecological and biological characteristics of demersal fish species jointly exploited by the artisanal inshore fleets and théindustrial fleets of Nigeria and Cameroon
7.Données sur la croissance et mortalité du bossu (Pseudotolithus elongatus) par J.-C. Njock et T. Djama
8.Les pêches démersales du Togo par K. Amégavie

LIST OF TABLES

1.Areas of fishing grounds by bottom type and depth zone, statistical division 34.3.5
2.Industrial fleet size and catches in Cameroon, 1951–1971
3.Size composition of Cameroonian industrial fleet
4.Numbers of trawlers and shrimpers per company, 1979–1984.
5.Company COTONNEC, Distribution of the numbers of fishing trips by zone and depth (1977–1978)
6.Estimated Nigerian continental shelf area on which the artisanal fishermen and industrial fleet operate
7.Estimated Nigerian continental shelf area which is frequented by shrimpers
8.Evolution of the numbers of Nigerian artisanal inshore canoes
9.Demersal fish species exploited by artisanal and industrial fisheries of Cameroon and Nigeria
10.Fresh landings of Cameroonian trawlers and shrimpers (1970–1978)
11.a-f. Demersal fisheries of Cameroon : landings by company (1979–1984)
12.Standardized fishing effort (fishing days of a 400 HP vessel) of vessels based at Doula, 1970–1983
13.Numbers of fishing days per company, by year and vessel type in Cameroon
14.Catches per day at sea for the total Cameroonian fleet, COTONNEC and CRECAM
15.Estimated total Nigerian catch of demersal fish by artisanal and industrial fisheries (1971–1984)
16.Species composition of Nigerian demersal catches
17.Species composition, effort and CPUE for the inshore trawlers based in Lagos
18.Estimated numbers of canoes and inshore trawlers/shrimpers operating in the marine and brackish waters of Nigeria
19.Estimated total annual catch of the Nigerian industrial fisheries
20.Combined catch and effort data for two of the Nigerian Fishing/Shrimping Companies for the period 1982–84
21.Estimated population parameters for some demersal fish species occurring on the continental shelf of Cameroon and Nigeria
22.Environmental data Ambas Bay, July 1984-March 1985
23.Global demersal fish and shrimp production, standardized effort and CPUE data for Cameroon
24.Shrimp (P. notialis) production in Cameroon and Nigeria, standardized CPUE data for CRECAM, theoretical total effort and unstandardized Nigerian effort data
25.Evolution of catches of CRECAM and the relationship shrimp/total catch (%)
26.Summary of hydroacoustic data for demersal fish, Nigeria area
27.Trawling surveys carried out in Nigerian waters
28.Trawling surveys carried out in Cameroonian waters
29.Yields of several species and species groups in Cameroonian waters
30.Summary of hydroacoustic data for demersal fish - Cameroon area: FIOLENT Cruise 1
31.Summary of hydroacoustic data for demersal fish - Cameroon area: FIOLENT Cruise 2

LIST OF FIGURES

1.Average monthly variations in total demersal landings, Cameroon (1980–1983).
2.Average monthly variations in shrimp landings (1970–1978).
3.Fishing grounds exploited by the Cameroonian industrial fleet.
4a.Modified bottom chart for Cameroonian waters.
4b.Distribution of fish communities and their main components in Cameroonian waters.
5.Global production models for total demersal stocks of Cameroon.
6.Global production models for the Nigeria, Cameroon stock of Penaeus notialis.
7.Demersal fish density map - Nigeria
8.Demersal fish density map - Cameroon (May 1976)
9.Demersal fish density map - Cameroon (September 1976).