Testing artificial baits in the Mexican shallow-set longline fishery

This study evaluated the potential for artificial bait to enhance catch selectivity in the Mexican shallow-set longline fishery operating in the Eastern Pacific Ocean off the western coast of the Baja California Peninsula. Experimental sets were deployed using three bait treatments: natural bait (mackerel, Scomber japonicus), an artificial squid lure, and an artificial squid lure with natural scent. Artificial bait reduced shark catch by up to 99% while maintaining catches of valuable target species such as yellowfin tuna (Thunnus albacares). However, natural bait produced the highest overall catch rates. Given the limited catch and number of sets in this study, additional data are needed to determine whether similar patterns occur across other commercially important species, such as swordfish.