Lightsticks cause adverse effects on behavior and mortality of marine mysids Promysis atlantica

Lightsticks baits are discharged into the ocean after their use in longline fishing. The traditional Brazilian community of Costa dos Coqueiros, Bahia, uses lightsticks as a medicine for rheumatism, vitiligo, and mycoses. It may affect marine life when its content leak ocean. This study assessed toxicity identification evaluation (TIE) constituents on mysids Promysis atlantica. internal solution was dissolved seawater with ethanol. lethal concentration contaminant that causes mortality 50% exposed population (LC50) 3h 0.001%, demonstrating lightstick is exceptionally toxic because low concentrations cause to P. Due lightsticks' high toxicity, TIE baseline 0.005% SSE (stock ethanol), selected endpoints were behavior lethality. sample submitted aeration presented significant reduction (P < 0.05) (0.005% SSE) volatile compounds caused effect. sodium thiosulfate treatment induced an insignificant decrease toxicity. Thus, new assay conducted considering thiosulfate. combination reduced compared lightstick, suggesting oxidants responsible toxicity; even concentrations, can promote changes deleterious effects. recommended create mechanisms inspect fishing vessels, thus avoiding improper disposal attractors at sea common garbage.