Differentiation of cryptic wood mice species of the subgenus Sylvaemus under different ecogeographic conditions in the Northern Caucasus

Differentiation of cryptic wood mice species of the subgenus Sylvaemus under different... Based on analysis of the frequencies of nonmetric cranial characters, the ratio of interpopulation and interspecific differences has been studied in populations of two genetically identified cryptic species of wood mice, A. uralensis and A. ponticus, living under different ecological conditions in the Northern Caucasus. Hybridization between these species has not been reported previously, but interspecific phenetic distances indicate that differences between them do not exceed the level characteristic of subspecies, with morphological differentiation between A. uralensis populations of the Central and Western Caucasus being weakly expressed. It is hypothesized that the low level of intra- and interspecific differences is explained by the sympatric and symbiotopic origin of both species in the Western Caucasus. This may account for the retention of their similarity in ecological requirements for the environment and, consequently, only slight morphological disparity in similar biotopes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Ecology Springer Journals

Differentiation of cryptic wood mice species of the subgenus Sylvaemus under different ecogeographic conditions in the Northern Caucasus

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Publisher
Pleiades Publishing
Copyright
Copyright © 2016 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Ecology; Environment, general
ISSN
1067-4136
eISSN
1608-3334
D.O.I.
10.1134/S1067413616040044
Publisher site
See Article on Publisher Site

Abstract

Based on analysis of the frequencies of nonmetric cranial characters, the ratio of interpopulation and interspecific differences has been studied in populations of two genetically identified cryptic species of wood mice, A. uralensis and A. ponticus, living under different ecological conditions in the Northern Caucasus. Hybridization between these species has not been reported previously, but interspecific phenetic distances indicate that differences between them do not exceed the level characteristic of subspecies, with morphological differentiation between A. uralensis populations of the Central and Western Caucasus being weakly expressed. It is hypothesized that the low level of intra- and interspecific differences is explained by the sympatric and symbiotopic origin of both species in the Western Caucasus. This may account for the retention of their similarity in ecological requirements for the environment and, consequently, only slight morphological disparity in similar biotopes.

Journal

Russian Journal of EcologySpringer Journals

Published: Jul 20, 2016

References

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