The regulation role of genes of behavior in coat color formation in American mink (Mustela vison Schreber, 1777)
2008
Trapezov, O.V., Russian Academy of Sciences. Siberian Branch, Novosibirsk (Russian Federation). Institute of Cytology and Geneticist
To date, 35 coat color mutations have been registered in minks. Domestication suggests the technology appropriate for deliberately creating hither to rarely, if at all, observed novelties. A method has been developed for evaluation how the degree of domestic behavior may affect coat color pattern in mink. The Karelian spotted mink (KSM) was provided as an example. According to the classical description the belly of the KSM(SK/+) is white, the back is all dark brown, the forehead is dark brown with white spots. The sides are dark brown turning to white, gradually. Gray hairs occur in the midst of pigmented (colored) areas. All offspring of the first generation from the cross between Karelian spotted dark brown (SK/+) and Standard (+/+) were Standard (+/+) and Spotted (SK/+) at a 1:1 ratio. It may be conducted that the gene for Karelian spotted coat color dominates over the gene for Standard color (+/+). The spotted pattern of the offspring of Karelian spotted offspring is different, depending on the behavior of their Standard dark brown colored mothers. The qualitative distinguishing features (QDF) of the degree of manifestation of aggressive behavior was identified. Also the QDF of domestic behavior was identified. 1. When aggressive females that show aggressive behavior (–3) are the sexual partner of Karelian spotted males, offspring fur of Karelian spotted dark brown is extensively coloured and spreads continuously over the back. 2. When tame females that show domestic behavior (scored 0) are the sexual partners of Karelian spotted males, kits among Karelian spotted offspring are spotted. 3. Standard dark brown females that show domestic behavior (scores +3) are used as sexual partners of Karelian spotted males. The higher is the score for domestic behaviour, the more unusual is the spotting pattern in offspring of Karelian spotted mink. Thus, a coat spotting pattern can be deliberately modified as a breeder please.
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