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Hook, bait and leader type effects on surface pelagic longline retention and mortality rates: a meta-analysis with comparisons for target, bycatch and vulnerable fauna interactions
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Orientador(es)
Resumo(s)
A meta-analysis of 24 publications was conducted to assess effects of hook, bait and leader type
on retention and at-haulback mortality rates of target, bycatch and vulnerable species of the
pelagic longline fishery. Turtles and swordfish had lower retention rates with circle hooks. In
contrast, retention rates of 3 sharks and 2 tuna species were greater with circle hooks. Bait type
did not seem to significantly influence the retention rates of most of the species examined. Wire
leader lead to a decrease in retention rates of bony fishes and a mix for elasmobranchs. For athaulback mortality, hook type was the most influential, with 5 elasmobranch species and 6 bony
fishes having a significantly lower at-haulback mortality rates when using circle hooks. Bait
type and leader type did not have a significant effect on at-haulback mortality rates for most
species. The results presented here should be considered preliminary. Future work will consider
expanded information on fishery characteristics.
Descrição
Palavras-chave
Meta-analysis J-hooks Circle hooks Squid Fish Target species Bycatch
Contexto Educativo
Citação
Santos, C. C., Rosa, D., and Coelho, R. (2019). Hook, Bait and Leader Type Effects on Surface Pelagic Longline Retention and Mortality Rates: A Meta-Analysis with Comparisons for Target, Bycatch and Vulnerable Fauna Interactions. IOTC-2019-WPEB15-39.