Document Detail

Environmental rearing conditions produce forebrain differences in wild Chinook salmon Oncorhynchus tshawytscha.
MedLine Citation:
PMID:  16890467     Owner:  NLM     Status:  MEDLINE    
Recent studies suggest that hatchery-reared fish can have smaller brain-to-body size ratios than wild fish. It is unclear, however, whether these differences are due to artificial selection or instead reflect differences in rearing environment during development. Here we explore how rearing conditions influence the development of two forebrain structures, the olfactory bulb and the telencephalon, in juvenile Chinook salmon (Oncorhynchus tshawytscha) spawned from wild-caught adults. First, we compared the sizes of the olfactory bulb and telencephalon between salmon reared in a wild stream vs. a conventional hatchery. We next compared the sizes of forebrain structures between fish reared in an enriched NATURES hatchery and fish reared in a conventional hatchery. All fish were size-matched and from the same genetic cohort. We found that olfactory bulb and telencephalon volumes relative to body size were significantly larger in wild fish compared to hatchery-reared fish. However, we found no differences between fish reared in enriched and conventional hatchery treatments. Our results suggest that significant differences in the volume of the olfactory bulb and telencephalon between hatchery and wild-reared fish can occur within a single generation.
R L Kihslinger; S C Lema; G A Nevitt
Related Documents :
2051237 - Lipid metabolism responses in rats fed beef tallow, native or randomized fish oil and n...
7433367 - Effects of 1,3-butanediol-1,3-dioctanoate and corn oil on lipids of chick plasma, liver...
1630277 - Comparison of the effects of dietary fish oils with different n-3 polyunsaturated fatty...
9113627 - Comparative hypocholesterolemic effects of capybara (hydrochoerus hydrochaeris dabbenei...
24082397 - Snatch-farrowed, porcine-colostrum-deprived (sf-pcd) pigs as a model for swine infectio...
22365227 - Effect of dietary fat blend enriched in oleic or linoleic acid and monensin supplementa...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-06-30
Journal Detail:
Title:  Comparative biochemistry and physiology. Part A, Molecular & integrative physiology     Volume:  145     ISSN:  1095-6433     ISO Abbreviation:  Comp. Biochem. Physiol., Part A Mol. Integr. Physiol.     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-09-25     Completed Date:  2006-11-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9806096     Medline TA:  Comp Biochem Physiol A Mol Integr Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  145-51     Citation Subset:  IM    
Section of Neurobiology, Physiology and Behavior, University of California, Davis, One Shields Avenue Davis, CA 95616, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Animals, Wild
Behavior, Animal
Olfactory Bulb / growth & development
Salmon / anatomy & histology,  growth & development*
Telencephalon / growth & development

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Increased expression of stress proteins in the surf clam Donax variabilis following hydrogen sulfide...
Next Document:  Purification and characterization of milk clotting enzyme from goat (Capra hircus).