Effects of temperature on biological and biochemical indicators of the life-history strategy of bullhead Cottus gobio

$48.00 plus tax (Refund Policy)

Download / Buy Article:

Abstract:

The biological and biochemical effects of temperature on life-history strategy of female bullhead Cottus gobio were investigated. Fish from two populations (Bez Basin, south-east France) experiencing contrasted thermal environments (i.e. more or less stable) were reared during 4 months at three distinct temperatures (7, 9 or 12° C). Both somatic (soma fresh mass and muscle triglyceride content) and reproductive (gonad fresh mass, fecundity, mean diameter of eggs and gonad triglyceride content) indicators were examined. Mixed models indicated that an increasing temperature had significant negative effects on all life-history indicators except for soma fresh mass. Differences in life-history strategy with regard to muscle and gonad triglyceride contents, however, suggest that populations experiencing more variable thermal environments may be better adapted than others to cope with an increasing temperature. These findings may have important implications for C. gobio populations, within the context of climate warming.

Keywords: experimental ecology; freshwater fish; phenotypic plasticity; triglycerides

Document Type: Regular Paper

DOI: http://dx.doi.org/10.1111/j.1095-8649.2009.02373.x

Affiliations: 1: Laboratoire d’Écologie des Hydrosystèmes Fluviaux (L. E. H. F.), UMR CNRS 5023, Université Claude Bernard–Lyon 1, 43 boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France 2: Cemagref, UR Hydrobiologie, 3275 route de Cézanne, CS 40061, 13182 Aix-en-Provence Cedex 5, France

Publication date: October 1, 2009

Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more