Journal
OCEANS-SWITZERLAND
Volume 3, Issue 1, Pages 84-93Publisher
MDPI
DOI: 10.3390/oceans3010008
Keywords
Danio rerio; artificial sediment; metabolic rate; heart rate; sublethal concentration; sunscreen
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Chemical UV filters released into the aquatic environment can affect the development of fish eggs. This study evaluated the toxicity of six commonly used UV filters on the embryo-larval stages of zebrafish and found that octocrylene delayed hatching success while 2-ethylhexyl salicylate increased heartbeat rate.
Chemical UV filters are increasingly used in cosmetics to protect skin from UV radiation. As a consequence, they are released into the aquatic environment via recreational activities and wastewaters. In aquatic ecosystems, fish eggs in contact with sediment can be affected by organic and lipophilic pollutants such as UV filters. The present study aims to evaluate the toxicity of six individual UV filters, diethylhexyl butamido triazone (DBT), diethylamino hydroxybenzoyl hexyl benzoate (DHHB), ethylhexyl triazone (ET), 2-ethylhexyl salicylate (ES), homosalate (HS), and octocrylene (OC), in the embryo-larval stages of zebrafish Danio rerio. Contamination of fish eggs and larvae with UV filters occurred through contact with spiked sediment for 96 h at a concentration of 10 mu g g(-1). Among the six UV filters tested, OC delayed hatching success, whereas ES significantly increased the heartbeat rate of embryo-larvae after sediment exposure, probably as a stress response.
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