Gloger's Rule in Tree Shrews (Tupaia)

Gloger's Rule correlates darkness (low reflectance) with humid environments. Common Tree Shrews (Tupaia glis) [Scandentia: Mammalia] in northern latitudes (with less rainfall) are paler (higher reflectance) than those in southern latitudes with greater rainfall. [Minkoff 1983, after Buettner-Janusch 1966; photo from Encyclopedia Britannica]

Text material © 2003 by Steven M. Carr