Abstract
Problems concerning microevolutionary transformations in animal populations are considered. It is shown that genetic variation is the main factor providing the basis for adaptation to environmental changes, including toxic pollution. The selection pressure of a toxic factor gives an advantage in survival to more resistant genotypes in animal populations, which eventually leads to the reduction of their genetic diversity and potential for adaptation to other natural or anthropogenic stress factors. Microevolutionary transformations follow the pattern of r-selection, i.e., occur in favor of smaller, earlier maturing individuals capable of expending a greater proportion of their energy resources for reproduction.
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Original Russian Text © V.N. Bol’shakov, T.I. Moiseenko, 2009, published in Ekologiya, 2009, No. 5, pp. 323–332.
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Bol’shakov, V.N., Moiseenko, T.I. Anthropogenic evolution of animals: Facts and their interpretation. Russ J Ecol 40, 305–313 (2009). https://doi.org/10.1134/S1067413609050014
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DOI: https://doi.org/10.1134/S1067413609050014