Ecological Mechanisms Determining Stability of Color Polymorphism in the Population of Moor Frog, Rana arvalis Nilss

V. G. Ishchenko


The distribution and frequency of various color morphs were determined in the population of moor frog, Rana arvalis Nilss, on the Middle Ural. The color polymorphism has been established to correlate with some demographic traits such as migration and the life-span. The relative stability of polymorphism within the population is assumed to be determined by ecological mechanisms, i.e., the dynamics of numbers and spatial and age structure of the population.


ecology; polymorphism; amphibians; brown frogs.

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