Heritability of body mass varies with age and season in wild bighorn sheep
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Sheep abomasal phytobezoariasis: the effect of breed, season and age with histopathological observations
The prevalence of the latent form of sheep abomasal phytobezoariasis and the effect of husbandry management on this condition were determined in a survey in and industrial abattoir in Urmia from June 2005 to July 2006. The effect of different age groups and seasons on the prevalence of sheep abomasal phytobezoariasis was also determined. Furthermore, the histological changes in the affected abo...
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The loss of genetic variation in host populations is thought to increase host susceptibility to parasites. However, few data exist to test this hypothesis in natural populations. Bighorn sheep (Ovis canadensis) populations occasionally suffer disease-induced population declines, allowing us to test for the associations between reduced genetic variation and parasitism in this species. Here, we s...
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A quantitative trait locus analysis of personality in wild bighorn sheep
Personality, the presence of persistent behav105ioral differences among individuals over time or contexts, potentially has important ecological and evolutionary consequences. However, a lack of knowledge about its genetic architecture limits our ability to understand its origin, evolution, and maintenance. Here, we report on a genome-wide quantitative trait locus (QTL) analysis for two personal...
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ژورنال
عنوان ژورنال: Heredity
سال: 1999
ISSN: 0018-067X,1365-2540
DOI: 10.1038/sj.hdy.6885430