We report the use of generalized additive models to define possible thermal windows related to high abundance of Sardinella aurita and Engraulis encrasicolus in Senegalese waters. Landing data from 1999 to 2009, considered as an abundance index, remotely sensed thermal data (sea surface temperature, SST from AVHRR Pathfinder V5) and a temporal vari...
Two indicators of fish exploitation, catch per unit effort (CPUE) and yield per unit area, were used with surveys of small-scale fishery landings to compare two African reservoirs that differ in their level of fish exploitation, being high for Selingue Reservoir and low for Manantali Reservoir, both located in West Africa. The heavy exploitation in...
Technological advancements can influence both the fishing power of a fleet and the fishing strategies itemploys. To investigate these potential linkages, we examined almost three decades of data (1981–2008)from French tropical tuna purse seiners operating in the eastern Atlantic Ocean. Applying a sequence ofstatistical methods at different temporal...
Two indicators of fish exploitation, catch per unit effort (CPUE) and yield per unit area, were used with surveys of small-scale fishery landings to compare two African reservoirs that differ in their level of fish exploitation, being high for Selingue Reservoir and low for Manantali Reservoir, both located in West Africa. The heavy exploitation in...
Indices of CPUE are presented for skipjack tuna (Katsuwonus pelamis) for the Indian Ocean over the period 1980-2013. The analysis was initiated under the framework of the E.U. research project CECOFAD, whose objectives are to enhance our understanding of fishing effort units and improve the accuracy of purse-seine CPUE estimates. Skipjack stock ass...
Underestimation of catches is especially important in countries where fishing fleets are highly diversified, the enforcement of fishery management is low, data availability is poor, and there is high demand for fish products in local markets. This is the case for southern European and Mediterranean regions. Adapting a catch-reconstruction approach,...
In 2013, the French purse seine fishing fleet of the Indian Ocean was composed of 13 vessels of individual capacity >800 t, which all represented a total carrying capacity >13,000 t of tuna. The total cumulated nominal effort exerted during the year was 3,673 and 3,185 fishing and searching days, respectively. The French purse seiners cumulated a t...
En 2012, la flottille de senneurs français opérant dans l'Atlantique se composait de neuf navires, chacun ayant une capacité de transport > 600 t, représentant dans leur totalité une capacité de transport de 9.000 t. L'effort nominal cumulé total s'élevait à environ 2.500 et à 2.000 jours de pêche et de recherche, respectivement. Le nombre total d'...
