Inside the heads of David and Goliath: environmental effects on brain morphology among wild and growth‐enhanced coho salmon Oncorhynchus kisutch

$48.00 plus tax (Refund Policy)

Download / Buy Article:

Abstract:

Transgenic and wild‐type individual coho salmon Oncorhynchus kisutch were reared in hatchery and near‐natural stream conditions and their brain and structure sizes were determined. Animals reared in the hatchery grew larger and developed larger brains, both absolutely and when controlling for body size. In both environments, transgenics developed relatively smaller brains than wild types. Further, the volume of the optic tectum of both genotypes was larger in the hatchery animals and the cerebellum of transgenics was smaller when reared in near‐natural streams. Finally, wild types developed a markedly smaller telencephalon under hatchery conditions. It is concluded that, apart from the environment, genetic factors that modulate somatic growth rate also have a strong influence on brain size and structure.

Document Type: Regular Paper

DOI: http://dx.doi.org/10.1111/j.1095-8649.2012.03348.x

Publication date: August 1, 2012

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