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Temperature effects on growth and maturity of butterfish (Pholis gunnellus) in Iceland

Published online by Cambridge University Press:  09 October 2002

Ásgeir Gunnarsson  and
Karl Gunnarsson
Ásgeir Gunnarsson
Affiliation:
Marine Research Institute, Skúlagata 4, 101 Reykjavík, Iceland
Karl Gunnarsson
Affiliation:
Marine Research Institute, Skúlagata 4, 101 Reykjavík, Iceland
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Abstract

The effect of temperature on growth of butterfish, Pholis gunnellus on the west coast of Iceland was studied from September 1995 to March 1997. Butterfish were collected monthly at two sites with different temperature regimes. According to otolith readings butterfish can reach 12 years. The fish in the area with higher sea temperature were larger at all ages but had similar growth rates. Higher temperature seems to result in a shorter incubation time of butterfish eggs and/or higher growth rate of the larvae, leading to larger larvae size at settlement.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 82 , Issue 5 , October 2002 , pp. 903 - 906
Copyright
2002 Marine Biological Association of the United Kingdom

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