Effects of turbidity on the spontaneous and prey-searching activity of juvenile Atlantic cod (Gadus morhua)

Increasing turbidity in coastal waters in the North Atlantic and adjacent seas has raised concerns about impacts on Atlantic cod (Gadus morhua) using these areas as nurseries. A previous experiment (Meager et al. 2005 Can. J. Fish. Aquat. Sci. 62, 1978–1984) has shown that turbidity (up to 28 beam a...

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Bibliographic Details
Published in:Philosophical Transactions of the Royal Society B: Biological Sciences
Main Authors: Meager, Justin J, Batty, Robert S
Format: Text
Language:English
Published: The Royal Society 2007
Subjects:
Research Article
atlantic cod
Gadus morhua
North Atlantic
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2442857
http://www.ncbi.nlm.nih.gov/pubmed/17472920
https://doi.org/10.1098/rstb.2007.2104
Description
Summary:Increasing turbidity in coastal waters in the North Atlantic and adjacent seas has raised concerns about impacts on Atlantic cod (Gadus morhua) using these areas as nurseries. A previous experiment (Meager et al. 2005 Can. J. Fish. Aquat. Sci. 62, 1978–1984) has shown that turbidity (up to 28 beam attenuation m−1) had little effect on the foraging rate of juvenile cod. Although this was attributed to cod using chemoreception in conjunction with vision to locate prey, foraging rates may also be maintained by increased activity. Higher activity, however, is energetically costly and may offset benefits from increased foraging return.

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