A new Spotting mutation?
A new spotting mutation appears
Read all about this probable spotting mutation that has appeared recently in Mongolian gerbils in the informative article by Kira Gysel on the subject. The article explores its origins and subsequent breeding of the coat colour and explains how it can cause potential health problems. To accompany the article readers may also find the new article "Further Notes on Spotting Genes in Gerbils" an interesting read.
Along with the above articles you can see that the Gerbil Coat Colour Reference Guide has been updated and expanded yet again to show how this new spotting gene affects existing spotted coat colour patterns. Firstly an Excellent visual comparison guide showing the differences between The Dominant spot gene and the new Spotting lethal (post-natal) gene. The coat colour guide also includes two further guides on Extreme White spotting in gerbils. The second picture guide is by Eli Wolfmayr & Kira Gysel and includes some superb photography of this new coat colour variety. The third picture guide is a breeders diary by Inga and shows this new coat colour in various stages from pups to adulthood.
It also appears that a very similar spotted coat variety has emerged in the U.S.A. but at the moment they are unsure if it's the same new spotting gene at work when combined with the existing Dominant Spotting gene, or simply further modifying genes at the Dominant Spotting locus that has extended the white markings yet again.
For more info on these developments see the posts on the subject at the eGerbil forum,