bascule de visibilité Search & Display Options

Tout Sélectionner    Désélectionner
 |   | 
  Enregistrement Liens
Auteur (up) Gilman, E.; Chaloupka, M.; Bach, P.; Fennell, H.; Hall, M.; Musyl, M.; Piovano, S.; Poisson, F.; Song, L. doi  openurl
  Titre Effect of pelagic longline bait type on species selectivity: a global synthesis of evidence Type Article scientifique
  Année 2020 Publication Revue Abrégée Rev. Fish. Biol. Fish.  
  Volume 30 Numéro 3 Pages 535-551  
  Mots-Clés atlantic-ocean; Bait; by-catch; Bycatch; caretta-caretta; circle hooks; feeding-behavior; Longline; Mitigation; publication bias; sea-turtles; Selectivity; shark populations; size-selectivity; swordfish xiphias-gladius; Tuna  
  Résumé Fisheries can profoundly affect bycatch species with 'slow' life history traits. Managing bait type offers one tool to control species selectivity. Different species and sizes of marine predators have different prey, and hence bait, preferences. This preference is a function of a bait's chemical, visual, acoustic and textural characteristics and size, and for seabirds the effect on hook sink rate is also important. We conducted a global meta-analysis of existing estimates of the relative risk of capture on different pelagic longline baits. We applied a Bayesian random effects meta-analytic regression modelling approach to estimate overall expected bait-specific catch rates. For blue shark and marine turtles, there were 34% (95% HDI: 4-59%) and 60% (95% HDI: 44-76%) significantly lower relative risks of capture on forage fish bait than squid bait, respectively. Overall estimates of bait-specific relative risk were not significantly different for seven other assessed taxa. The lack of a significant overall estimate of relative capture risk for pelagic shark species combined but significant effect for blue sharks suggests there is species-specific variability in bait-specific catch risk within this group. A qualitative literature review suggests that tunas and istiophorid billfishes may have higher catch rates on squid than fish bait, which conflicts with reducing marine turtle and blue shark catch rates. The findings from this synthesis of quantitative and qualitative evidence support identifying economically viable bycatch management measures with acceptable tradeoffs when multispecies conflicts are unavoidable, and highlight research priorities for global pelagic longline fisheries.  
  Auteur institutionnel Thèse  
  Editeur Lieu de Publication Éditeur  
  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 0960-3166 ISBN Médium  
  Région Expédition Conférence  
  Notes WOS:000555361400001 Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2843  
Lien permanent pour cet enregistrement
Tout Sélectionner    Désélectionner
 |   | 

Save Citations:
Export Records: