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Effects of temperature and growth hormone on individual growth trajectories of wild-type and transgenic coho salmon Oncorhynchus kisutch
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Animal Ecology.
2010 (English)In: Journal of Fish Biology, ISSN 0022-1112, E-ISSN 1095-8649, Vol. 76, no 3, 641-654 p.Article in journal (Refereed) Published
Abstract [en]

In this study, individual growth patterns of wild-type and growth-enhanced coho salmon Oncorhynchus kisutch at 8, 12 and 16 degrees C water temperature were followed. Despite large differences among individuals in growth rates, there was generally little variation in the shape of the growth curves among O. kisutch individuals of both genotypes and at all temperatures. Typically, individuals that were relatively large initially were also relatively large at the end of the growth period. The limitation in variation was more pronounced in the growth-enhanced O. kisutch than in the wild type, where the relative size of some individuals reared at 12 and 8 degrees C changed by the end of the trial. As a warmer temperature seems to decrease the plasticity of growth trajectories in wild-type fish, it is possible that global warming will influence the ability of wild fish to adapt their growth to changing conditions.

Place, publisher, year, edition, pages
2010. Vol. 76, no 3, 641-654 p.
Keyword [en]
fishes, growth variation, hormones, salmonids
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-137564DOI: 10.1111/j.1095-8649.2009.02521.xISI: 000274551100014PubMedID: 20666902OAI: oai:DiVA.org:uu-137564DiVA: diva2:378460
Available from: 2010-12-15 Created: 2010-12-15 Last updated: 2016-04-18Bibliographically approved

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Björklund, Mats

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