Fulton's body condition factor K correlates with survival time in a thermal challenge experiment in juvenile Lahontan cutthroat trout ( Oncorhynchus clarki henshawi)

Thermal tolerance was measured in an experimental setting using seven full-sibling family groups of hatchery reared Lahontan cutthroat trout ( Oncorynchus clarki henshawi). Body weight and fork length were measured and Fulton's body condition factor ( K) was estimated for each individual. Herit...

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Bibliographic Details
Published in:Journal of thermal biology 2008-08, Vol.33 (6), p.363-368
Main Authors: Robinson, M.L., Gomez-Raya, L., Rauw, W.M., Peacock, M.M.
Format: Article
Language:English
Subjects:
Body condition factor
Genetic correlation
Heritability
Lahontan cutthroat trout
Temperature tolerance
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Summary:Thermal tolerance was measured in an experimental setting using seven full-sibling family groups of hatchery reared Lahontan cutthroat trout ( Oncorynchus clarki henshawi). Body weight and fork length were measured and Fulton's body condition factor ( K) was estimated for each individual. Heritabilities were moderately high for body weight (0.50), upper temperature tolerance (0.44), and K factor (0.50). Estimates of genetic and phenotypic correlations between upper temperature tolerance and K factor were 0.53 and 0.41, respectively. K factor may be an indicator as to the ability of an individual to survive periods of increased water temperature during the summer months.
ISSN:0306-4565
1879-0992
DOI:10.1016/j.jtherbio.2008.05.004