No evidence for large differences in genomic methylation between wild and hatchery steelhead (Oncorhynchus mykiss)

Blouin, Michael S.; Thuillier, Virginie; Cooper, Becky; Amarasinghe, Vindhya; Cluzel, Laura; Araki, Hitoshi; Grunau, Christoph (2010). No evidence for large differences in genomic methylation between wild and hatchery steelhead (Oncorhynchus mykiss). Canadian journal of fisheries and aquatic sciences, 67(2), pp. 217-224. Ottawa: NRC Research Press 10.1139/f09-174

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When salmonid fish that have been raised in hatcheries spawn in the wild, they often produce fewer surviving adult offspring than wild fish. Recent data from steelhead (Oncorhynchus mykiss) in the Hood River (Oregon, USA) show that even one or two generations of hatchery culture can result in dramatic declines in fitness. Although intense domestication selection could cause such declines, it is worth considering alternative explanations. One possibility is heritable epigenetic changes induced by the hatchery environment. Here, we show, using methylation-sensitive amplified fragment length polymorphism, that hatchery and wild adult steelhead from the Hood River do not appear to differ substantially in overall levels of genomic methylation. Thus, although altered methylation of specific DNA sites or other epigenetic processes could still be important, the hatchery environment does not appear to cause a global hypo- or hypermethylation of the genome or create a large number of sites that are differentially methylated.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE)

UniBE Contributor:

Araki, Hitoshi

ISSN:

0706-652X

ISBN:

0706-652X

Publisher:

NRC Research Press

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:17

Last Modified:

17 Mar 2015 19:22

Publisher DOI:

10.1139/f09-174

Web of Science ID:

000274352400001

URI:

https://boris.unibe.ch/id/eprint/5247 (FactScience: 209978)

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