Mink and Mock Mink - the colors of the Rat

Kathrin Guttmann Colors, Knowledge, Breeding & Genetic

Mink is the English word for mink - and is reminiscent of the fur of a mink Mink also our pet rats. The color should be a medium brown-gray with no white hair (Silvering) or stains. The coat should have a bluish tinge. The feet have same color as the top, The eyes are black (AFRMA, NFRS). Overall, the color Mink has a great variety and both warmer, include cooler and browns. Compared to Chocolate it is matt and has less red component. A special form of Mink represents the nonstandard Silvered Mink is, wherein the skin is penetrated with single white hair (please refer Images at Zephyr Council).

Illustration: Mink Berkshire Blazed (Badger) rat

The history of color Mink

The color Mink has a rather confusing history behind it. When 1905 a rat with a new color appeared, it was initially assumed, that it is a variant of blue and named it accordingly. 1935 was also discovered in laboratory strains within the framework of linkage studies a new color, the researchers Castle and King with Fawn Dilute (diluted "fawn") named 1)Robinson, R. (1965). Genetics of the Norway Rat: International Series of Monographs in Pure and Applied Biology. In your opinion, it was a gene, that was similar to the Chocolate locus. The Fawn Dilute animals were coffee brown and together with English Blue (d) Fawn found Dilute the color Lavender 2)Ann Zophi Palsson and Eva Johansson, The Color Safir (Mink/Lilac), Summer I 1997 AFRMA Rat & Mouse Tales news-magazine. 1977 was the color Mink, hitherto "blue" was, renamed and standardized. had reason, that now a further gene, that produces a blue color, had found and this color should be designated as a Blue, since it corresponds to the blue color of other species.

Illustration: Mink Berkshire Harley Ratte

Genetics of color Mink in rats

Image

Mink is a non-agouti color, Therefore, the animals are always homozygous for the non-agouti- or "Schwarz"-Allel aa. On top of that on the Mink locus lying, compared to the non-Mink allele recessive Mink allele in a homozygous form, also mm. This results in the genetic code aa mm for rats minkfarbene. Of course, should be so no other colors, that they would mint phenotypically, would otherwise occur mixed colors with Mink.

In the color Mink but is exacerbated, that there are two variants of Mink: the UK-Mink and the American Mink or Mock Mink (I am I am oder). Both colors are visually almost indistinguishable, even if the American Mink to appear warmer and lacks the blue shimmer (compare Ratvarieties). Now you mated a homozygous UK-Mink animal with a homozygous American / mock mink animal, the result is black descendants, as long as no other color is pronounced.

Apparently it concerns with UK-Mink and mock / American mink not two different allele is, lying on the same locus, but two different gene loci, since it is apparently possible, to draw Animals, both homozygous for UK-Mink also read mock / American mink are, thus have the genetic code aa mm momo. On the Italian side "ratvarieties-fancyratitalia" there are corresponding illustrations of double-Mink-Merle animals.

Here, the American / mock mink Allen is now well studied inter. Kuramoto et al. (20103)Kuramoto T1, Yokoe M, Yagasaki K, Kawaguchi T, The mafuji K, Serikawa T. (2010), Genetic analyses of fancy rat-derived mutations, Exp Anim. 2010;59(2):147-55.) could the recessive American / mock mink on a locus of the 1. Chromosome section 95.5-103 locate Mb, followed by coupling with all other on the chromosome 1 located gene loci is present. The gene is believed to be homologous to the Hermansky-Pudlak syndrome 5 Gene in humans and the ruby ​​eye gene 2 the mouse (Ru2).

In addition to the mink and the Mock Mink / Amerikcan Mink mutation, there is a further mutation, causes the one minkfarbenes appearance, the Australian Mink. In Mock Mink distinction must be made between the American Mink and Australian Mink. American Mink is partly abbreviated in the US with the, while in Germany it is usually called Mock Mink and is abbreviated Mon.. Australian Mink other hand, is referred to and in the US as Mock Mink mo abbreviated, while there is still no official abbreviation in Germany

Illustration: Double Mink Merle (Those: ratvarieties-fancyratitalia)

Illustration: Mink Variegated Blazed Ratte

Color comparisons Mink Rat

Illustration: color Reference

Illustration: color Reference

References   [ + ]

1. Robinson, R. (1965). Genetics of the Norway Rat: International Series of Monographs in Pure and Applied Biology
2. Ann Zophi Palsson and Eva Johansson, The Color Safir (Mink/Lilac), Summer I 1997 AFRMA Rat & Mouse Tales news-magazine
3. Kuramoto T1, Yokoe M, Yagasaki K, Kawaguchi T, The mafuji K, Serikawa T. (2010), Genetic analyses of fancy rat-derived mutations, Exp Anim. 2010;59(2):147-55.