On ecology of sibling species Microtus arvalis Pallas, 1779 and Microtus rossiaemeridionalis Ognev, 1924 (Rodentia, Cricetidae) in tsimlyansk sands

被引:0
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作者
Tikhonova, GN [1 ]
Tikhonov, IA [1 ]
Bogomolov, PL [1 ]
Polyakova, LV [1 ]
机构
[1] Russian Acad Sci, Severtsov Inst Problems Ecol & Evolut, Moscow 117071, Russia
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中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Ecological features and circadian activity of the common vole sibling species were studied upon joint and separate occurrences. Both species had a similar abundance but different biotopical distribution. Microtus arvalis-chromosome form "obscurus" populated the studied territory more uniformly the studied territory. M. rossiaemeridionalis tended to occur in humid coenoses. In case of joint occurrences, the sibling species occupied different regions of biotopes and the rhythms of their activity change, as a rule, in antiphase. Separation of the spatial and temporal niches of these species is considered as possible avoidance of competition between the closely related species.
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页码:309 / 318
页数:10
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