Phylogeographic study using nuclear genome sequences of <i>Asip</i> to infer the origins of ventral fur color variation in the house mouse <i>Mus musculus</i>

Genealogical characterization of regional populations and dorsal coat color variation in the house mouse <i>Mus musculus</i> from Asia based on haplotype structure analysis of a gene-rich region harboring <i>Mc1r</i>

“…The variation in ventral coat coloration among regions of the present distribution area presumably occurred during the stepwise eastward migration (Takeishi et al, 2021). CAS has white ventral fur in its homelands of Iran, Pakistan and northern India; it has dark gray fur in newly established areas, namely the southern Indian sub-continent, Southeast Asia and southern China (Takeishi et al, 2021).…”

“…The variation in ventral coat coloration among regions of the present distribution area presumably occurred during the stepwise eastward migration (Takeishi et al, 2021). CAS has white ventral fur in its homelands of Iran, Pakistan and northern India; it has dark gray fur in newly established areas, namely the southern Indian sub-continent, Southeast Asia and southern China (Takeishi et al, 2021). The Russian MUS population tends to have a black abdomen, whereas populations from western to northern China, the Korean Peninsula and the Japanese archipelago tend to have a white abdomen (Takeishi et al, 2021).…”

“…The house mouse (Mus musculus) shows considerable morphological variation among geographic populations, particularly in terms of coat color (e.g., Schwarz and Schwarz, 1943;Marshall, 1998;Lai et al, 2008;Kishimoto et al, 2021;Takeishi et al, 2021). It was once divided into > 10 subspecies based on morphological characteristics, including variation in dorsal and ventral coat color (Schwarz and Schwarz, 1943).…”

“…CAS has white ventral fur in its homelands of Iran, Pakistan and northern India; it has dark gray fur in newly established areas, namely the southern Indian sub-continent, Southeast Asia and southern China (Takeishi et al, 2021). The Russian MUS population tends to have a black abdomen, whereas populations from western to northern China, the Korean Peninsula and the Japanese archipelago tend to have a white abdomen (Takeishi et al, 2021). In the Japanese archipelago, where CAS mice were introduced, a mixed pattern with light and dark ventral fur is present (Takeishi et al, 2021).…”

“…The Russian MUS population tends to have a black abdomen, whereas populations from western to northern China, the Korean Peninsula and the Japanese archipelago tend to have a white abdomen (Takeishi et al, 2021). In the Japanese archipelago, where CAS mice were introduced, a mixed pattern with light and dark ventral fur is present (Takeishi et al, 2021). However, the dorsal coat coloration has not been analyzed within the evolutionary dynamics of the house mouse.…”