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| Gilman, Eric; Chaloupka, Milani; Bach, Pascal; Fennell, Hannah; Hall, Martin; Musyl, Michael; Piovano, Susanna; Poisson, Francois; Song, Liming. |
| 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%... |
| Tipo: Text |
Palavras-chave: Bait; Bycatch; Longline; Mitigation; Selectivity; Tuna. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00643/75536/76441.pdf |
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| Lorance, Pascal; Souissi, Sami; Uiblein, Franz. |
| The catch from bottom longline stations sampled from a series of research cruises around Lanzarote and Fuerteventura (Canary Islands, NE Atlantic) was analysed in terms of fish distribution, density and diversity. The distribution of the number of species and individuals caught per station appeared to fit well the Poisson and Exponential distribution function, respectively. In particular, the parameter of the Poisson's distribution appeared to provide an index of the point (at station scale) diversity, and its confidence interval, allowing for statistical comparisons. The relationships between point diversity, the alpha diversity (in the depth strata) and the beta diversity (along the depth gradient) were investigated. Around the islands, the density and... |
| Tipo: Text |
Palavras-chave: Canary Islands; Probability distributions; Density; Diversity; Demersal fishes; Longline. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/publication-566.pdf |
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