Comparative analysis of three bait types in deep-set pelagic longline gear in the Equatorial Atlantic Ocean

The choice of bait is one the fisheries tactics used to increase selectivity for particular target species. performance three types (mackerel, sardine, squid) was evaluated with a commercial vessel operating in Equatorial Atlantic Ocean using deep-set pelagic longline deployment method large yellowfin and bigeye tunas. effect different factors covariates on Capture per Effort Unit - CPUE through Generalized Linear Models (GLM). In 121 experimental sets types, 2385 individuals two species were captured, 1166 tuna 1219 tuna. results suggest preference between each species, being mostly caught by hooks squid fish mackerel. Stratifying depth ranges hooks, combination resulted an catch probability intermediary layer For tuna, mackerel reduction rate. Bycatch represented around 11.15% total captures. These will provide important information choosing most efficient fishing operation help future decisions management.