Journal of Veterinary Medical Science
Online ISSN : 1347-7439
Print ISSN : 0916-7250
Anatomy
Insular Variation of the Craniodental Morphology in the Siberian Weasel Mustela sibirica
Satoshi SUZUKIJian-Jun PENGShih-Wei CHANGYen-Jean CHENYi WULiang-Kong LINJunpei KIMURA
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2013 Volume 75 Issue 5 Pages 575-581

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Abstract

We compared craniodental morphology among 5 populations of the Siberian weasel Mustela sibirica including 2 insular ones (Tsushima and Taiwan). Skulls of the insular individuals tended to be smaller than those of continental ones. Shape differences were also detected, but not so pronounced. Considering these results, the Taiwan population should be regarded as a distinct subspecies M. s. taivana from the mainland ones. The Tsushima population may also possibly be a distinct subspecies from the mainland ones, but more detailed studies using a larger number of specimens are needed for a conclusion. The introduced population in Honshu is also differentiated from the source population. This suggests a high morphological plasticity in M. sibirica.

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