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Does light-stick content pose any threat to marine organisms?
Grasiela L L Pinho1, Priscilla M Ihara, Gilberto Fillmann
1Laboratório de Microcontaminantes Orgânicos e Ecotoxicologia Aquática, Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Av. Itália km 8, Carreiros, 96.201-900 Rio Grande, RS, Brazil.
Abstract:
Light-stick is a light attractor used in longline fishing which is often dumped or lost into the ocean after used, becoming a potential pollutant to marine organisms. In the present study, toxicity was evaluated by exposing Artemia to light-stick contents. The effects were observed on the survival of nauplii and hatchability of cysts. The LC(50) was 0.063mLL(-1) after 24h of exposure, whilst hatchability was 100% reduced after 48h of exposure to 0.8mLL(-1). The results showed that its content can be toxic to marine organisms, especially under low dilution conditions or direct contact.
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