Journal
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
Volume 35, Issue 2, Pages 405-410Publisher
WILEY
DOI: 10.1002/etc.3192
Keywords
Avoidance; Contamination gradient; Environmental disturbance; Habitat selection; Nonforced exposure
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Funding
- Secretaria de Educacion Superior, Ciencia, Tecnologia e Innovacion, Ecuador
- Fundacao para a Ciencia e a Tecnologia, Portugal [SFRH/BPD/74044/2010]
- Central Department of Research, Universidad Laica Eloy Alfaro de Manabi
- Universidad Laica Eloy Alfaro de Manabi
- Ministry of Finance of Ecuador (CUP) [91740000.0000.376967]
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The present study focuses on avoidance response to predict population decline of the marine fish Rachycentron canadum (cobia) and larvae of the estuarine shrimp Litopenaeus vannamei (whiteleg shrimp). Avoidance of approximately 60% was recorded for the cobia fry exposed to 1.0mgCu/L, 1.60mgCu/L, and 1.80mgCu/L. For the shrimp larvae, avoidance was approximately 80% for all Cu concentrations. The population decline of cobia fry was conditioned by avoidance in lower concentrations. However, in higher concentrations mortality begins to play an important role. The displacement toward uncontaminated habitats might determine shrimp population decline. A Cu-contaminated environment can determine the habitat selection of both species and, therefore, their local population decline. Environ Toxicol Chem 2016;35:405-410. (c) 2015 SETAC
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