Artisanal fisheries are generally assumed to generate a lower fishing effort in comparison to the industrial sector. This study aims to comparing catch, fishing effort, and catch-per-unit-of-effort (CPUE) for each sector, using kWdays as a metric for fishing effort, and kg/kWdays for CPUE. The study, which covers West Africa (1950–2010), finds that the artisanal sector spends 4.7•109kWdays/year versus 1.3•109kWdays/year by the industrial sector, due to increasing numbers and size of artisanal boats, which in Senegal and Ghana can exceed that of (smaller) industrial vessels. The artisanal total fishing effort increased by 10-fold between 1950 and 2010, in contrast to a decrease in the industrial effort since the 1990s, which points to the occurrence of Malthusian overfishing, a form of fishing that favors excess labor instead of capital. This analysis finds that the CPUE declined by 1/3 since 1950 driven by a strong decline in the artisanal CPUE, which is 11 times lower than industrial CPUE.

Countries: 
Angola
Benin
Equatorial Guinea
Gabon
Gambia (Republic of The)
Guinea Bissau
Ghana
Guinea
Liberia
Mauritania
Morocco
Namibia
Nigeria
Sao Tome and Principe
Senegal
Sierra Leone
Togo
Lesson learned: 
This study calls for the prioritization of artisanal fisheries, with regard to management and data availability, but also as an important but unregulated sector, which contributes to overexploitation of fish stocks that are vital for communities in West Africa.
Scope: Sub/regions covered: 
Central Africa
West Africa
North Africa
Southern Africa
This case study confirms other indicators of decline of fish populations.
Resources
Contact details
Contact Name (Person or group/organization): 
Dyhia Belhabib