Studying the contribution of different fishing gears to the Sardinella small-scale fishery in Senegalese waters

• DOI: 10.1051/alr/2017027
• Publication Date: 2017-08-04T02:33:01Z
• Authors: Ousmane Diankha; Hervé Demarcq; Massal Fall; Djiga Thiao; Modou Thiaw; Bamol Ali Sow; Amadou Thierno Gaye; Patrice Brehmer
• Keywords: Sardinella

This study investigated variations of landings two key species, Sardinella aurita and maderensis, in Senegalese waters over a ten-year period (2004–2013). Using generalized additive models, it was found that fishing gear played major role explaining differences monthly for both species (51–71% deviance explained). Its effect more significant the southern part Senegal. Fishing effort (number trips) accounted only 4–18% variability landings. Purse seine (PS) most important contributor to species. In addition, area, surrounding gillnet also S. maderensis. Modeling results showed relationship between generally positive leveling off, while dome shaped PSs gillnets. Thus, when estimating indices management Senegal, is necessary account gears non-linear