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2009:
Gogoleva Svetlana S; Volodin Ilya A; Volodina Elena V; Kharlamova Anastasia V; Trut Lyudmila N
Kind granddaughters of angry grandmothers: the effect of domestication on vocalization in cross-bred silver foxes.
Behavioural processes 2009;
81(
3):.
The genetic basis of the effects of domestication has previously been examined in relation to morphological, physiological and behavioural traits, but not for vocalizations. According to Belyaev [Belyaev, D.K., 1979. Destabilizing selection as a factor in domestication. J. Hered. 70, 301-308], directional selection for tame behaviour toward humans resulted in domestication. This hypothesis has been confirmed experimentally on the farm-bred silver fox Vulpes vulpes population that has undergone 45 years of artificial selection for tameness and 35 years of selection for aggressiveness. These foxes, with their precisely known attitudes toward people, provide a means of examining vocal indicators of tameness and aggressiveness to establish the genetic basis for vocal production in canids. We examined vocalizations toward people in foxes selected for tameness and aggressiveness compared to those of three kinds of crosses: Hybrids (Tame x Aggressive), A-Backcrosses (Aggressive x Hybrid) and T-Backcrosses (Tame x Hybrid). We report the effects of selection for tameness on usage and structure of different vocalizations and suggest that vocal indicators for tameness and aggressiveness toward people are discrete phenotypic traits in silver foxes.
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