Exposure to low environmental copper concentrations does not affect survival and development in Atlantic cod (Gadus morhua) early life stages

In this study we investigated potential impacts of Cu exposure at low, environmentally relevant, concentrations on early live stages of Atlantic cod (Gadus morhua). Cod embryos and larvae were exposed to 0.5 μg/L (low), 2 μg/L (medium), and 6 μg/L (high) Cu from 4 to 17 days post fertilisation (dpf)...

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Bibliographic Details
Published in:Toxicology Reports
Main Authors: Julia Farkas, Linn H. Svendheim, Tjalling Jager, Tomasz M. Ciesielski, Trond Nordtug, Bjarne Kvæstad, Bjørn H. Hansen, Torstein Kristensen, Dag Altin, Pål A. Olsvik
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier 2021
Subjects:
Copper
Marine environment
Low concentrations
Fish early life stages
DEB
Atlantic cod
Toxicology. Poisons
RA1190-1270
atlantic cod
Gadus morhua
Online Access:https://doi.org/10.1016/j.toxrep.2021.11.012
https://doaj.org/article/234c293eb1a84ca2b38f0dbfb938dd3b
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Summary:In this study we investigated potential impacts of Cu exposure at low, environmentally relevant, concentrations on early live stages of Atlantic cod (Gadus morhua). Cod embryos and larvae were exposed to 0.5 μg/L (low), 2 μg/L (medium), and 6 μg/L (high) Cu from 4 to 17 days post fertilisation (dpf). Hatching success, mortality, oxygen consumption, biometric traits, and malformations were determined. A dynamic energy budget (DEB) model was applied to identify potential impacts on bioenergetics. A positive correlation was found between Cu exposure concentrations and Cu body burden in eggs, but not in larvae. The tested concentrations did not increase mortality in neither embryos nor larvae, or larvae deformations. Further, the DEB model did not indicate effects of the tested Cu concentrations.

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