Rearing conditions influence refuge use among over-wintering Atlantic salmon juveniles

Griffiths, Sian Wyn ORCID: https://orcid.org/0000-0001-6348-7352 and Armstrong, J. D. 2002. Rearing conditions influence refuge use among over-wintering Atlantic salmon juveniles. Journal of Fish Biology 60 (2) , pp. 363-369. 10.1006/jfbi.2001.1846

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Abstract

At low population densities, both hatchery- and wild-reared Atlantic salmon Salmo salar, which were progeny of a common genetic stock, occupied sub-gravel shelters alone. However, at high population densities, hatchery-reared fish occurred within shelters in significantly higher numbers than wild-reared fish. There was a significant effect of time after introduction to the experimental arenas on the proportion of hatchery-reared fish sheltering. These results show that rearing environment influences the behaviour of Atlantic salmon parr during winter and may also affect the carrying capacity of their environment.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Biosciences
Subjects:	Q Science > Q Science (General)
Uncontrolled Keywords:	Salmo salar; sheltering behaviour; early experience; winter refugia; nocturnal behaviour; competition; hatchery rearing.
Publisher:	Wiley
ISSN:	0022-1112
Last Modified:	27 Oct 2022 08:32
URI:	https://orca.cardiff.ac.uk/id/eprint/62626

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