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Auteur (up) Diankha, O.; Demarcq, H.; Fall, M.; Thiao, D.; Thiaw, M.; Sow, B.A.; Gaye, A.T.; Brehmer, P. doi  openurl
  Titre Studying the contribution of different fishing gears to the Sardinella small-scale fishery in Senegalese waters Type Article scientifique
  Année 2017 Publication Revue Abrégée Aquat. Living Resour.  
  Volume 30 Numéro Pages 27  
  Mots-Clés abundance; africa; aurita; catch; dynamics; Effects of fishing; environmental-factors; Generalized additive model; generalized additive-models; patterns; Pelagic fish; Purse seine; retention; Sardinella aurita; Sardinella maderensis; Senegal; Surrounding gillnet  
  Résumé This study investigated variations of landings of two key species, Sardinella aurita and Sardinella maderensis, in Senegalese waters over a ten-year period (2004-2013). Using generalized additive models, it was found that fishing gear played a major role in explaining differences in monthly landings for both species (51-71% deviance explained). Its effect was more significant in the southern part of Senegal. Fishing effort (number of trips) accounted only for 4-18% of variability in landings. Purse seine (PS) fishing was the most important contributor to the landings of both species. In addition, in the southern area, surrounding gillnet fishing was also important for S. maderensis. Modeling results showed that the relationship between monthly effort and landings was generally positive and leveling off, while it was dome shaped for PSs and surrounding gillnets. Thus, when estimating fishing effort indices for management in Senegal, it is necessary to account for differences in fishing gears and the non-linear relationship between fishing effort and landings.  
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  Langue English Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 0990-7440 ISBN Médium  
  Région Expédition Conférence  
  Notes Approuvé pas de  
  Numéro d'Appel MARBEC @ alain.herve @ collection 2168  
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