Адаптивные стратегии видов-двойников кустарниковых полевок Кавказа (Rodentia, Arvicolinae, Microtus) в условиях симпатрии

  Исследованы особенности экологии видов-двойников M. (T.) majori и M. (T.) daghestanicus в местах их контакта на Большом и Малом Кавказе. Осуществлен анализ симбиотопичных выборок видов-двойников из двух пунктов в Карачаево-Черкесии (правобережье р. Кизгич и окрестности пос. Верхний Архыз) и смешанной выборки из зоны симпатрии в окрестностях пос. Анкаван в Армении. Полученные приоритетные данные позволяют утверждать, что важным условием сосуществования видов-двойников M. (T.) majori и M. (T.) daghestanicus является их разделение по стациям пребывания, а также по ряду экологических особенностей. Показано, что различия в особенностях популяционной структуры (возрастной, половой состав), а также в стратегии размножения позволяют сосуществовать видам-двойникам кустарниковых полевок Кавказа в местах контакта даже в условиях симбиотопии. Обсуждаются известные ранее краниометрические признаки, подтверждающие различия между видами-двойниками кустарниковых полевок Кавказа в пищевых специализациях, которые также могут являться одним из факторов, обеспечивающих их сосуществование в местах контакта.

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