Abstract

The article is devoted to quantitative characteristics of assortative mating (R) as indicator of “reinforcement” in 12 hybrid zones between chromosomal races of the common shrew, Sorexaraneus L. The Wahlund effect in hybrid population and its potential reduction are examined. In hybrid zones with heterozygotes CIV, CV, and RIV, the R index varies within 0.23–0.59. In hybrid zones with more complex heterozygotes (RVI, CIX–CXI), it exceeds 0.82. Gene flow in the hybrid zone is interrupted at R > 0.99. Assortative mating reduces gene flow and also maintains genotype stability in hybrid populations.

中文翻译：

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普通ShSorex araneus L.（Soricidae，Soricomorpha）染色体小种之间杂交区的交配交配

摘要

本文专门介绍了杂种交配（R）的定量特征，以作为普通sh Sorex araneus L的染色体小种之间12个杂种区域“增强”的指标。研究了杂交种群的Wahlund效应及其潜在减少。在杂合子为CIV，CV和RIV的杂合区中，R指数在0.23-0.59之间变化。在具有更复杂杂合子（RVI，CIX–CXI）的杂交区，其超过0.82。杂交区的基因流在R> 0.99时中断。杂种交配减少了基因流，还保持了杂交种群的基因型稳定性。