. Biology of New World Microtus. Rodents; Rodents; Microtus; Voles. Zoogeography 89. Fig. 2. Distribution of Microtus mturus (mainland) and its insular allospecies M. abbreviatus (modified from Hall, 1981). Subspecies are: \, M. m. andersom; 2, M. m. cantator; 3, M. m. miurus; 4, M. m. muriei; 5, M. m. areas; 6, M. a. abbreviatus; 7, M. a. fisheri. (Fig. 2) are the singing vole, M. miurus (and its insular allospecies, the St. Matthew Island vole, M. abbreviatus), and the meadow vole, M. pennsylvanicus (Fig. 3). Microtus miurus and M. abbreviatus are classified in the subgenus Stenocranius toge
. Biology of New World Microtus. Rodents; Rodents; Microtus; Voles. Zoogeography 89. Fig. 2. Distribution of Microtus mturus (mainland) and its insular allospecies M. abbreviatus (modified from Hall, 1981). Subspecies are: \, M. m. andersom; 2, M. m. cantator; 3, M. m. miurus; 4, M. m. muriei; 5, M. m. areas; 6, M. a. abbreviatus; 7, M. a. fisheri. (Fig. 2) are the singing vole, M. miurus (and its insular allospecies, the St. Matthew Island vole, M. abbreviatus), and the meadow vole, M. pennsylvanicus (Fig. 3). Microtus miurus and M. abbreviatus are classified in the subgenus Stenocranius together with the Palearctic narrow-skulled vole (M. gregalis). Stenocranius has an amphiber- ingian distribution, like M. oeconomus, and both taxa are thought to have occupied the Bering land bridge during the latest (Wiscon- sinan) glacial period until the land bridge was flooded by rising sea level about 7,500 years ago (Hoff'mann, 1976). The populations of voles found on islands in the Bering Strait (M. abbreviatus on St. Matthew and Hall islands; M. oeconomus on St. Lawrence, Un- alaska, Kodiak, and adjacent small islands) thus represent refugial survivors of the late Pleistocene land-bridge populations (Hoff- mann, 1981). The singing vole is found in more xeric tundra hab- itats than the tundra vole (Getz, this volume), and often is associated with dwarf and riparian willow stands (Bee and Hall, 1956). Mi- crotus pennsylvanicus is found only sporadically in arctic tundra. Available distributional records suggest that it may range north-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tamarin, Robert H; American Society of Mammalogists. [Stillwater, Okla. ] : American Society of Mammalogists ; Shippensburg, Pa. : distributed by Vertebrate Museum, Shippensburg University
Size: 1946px × 1284px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectrodents
