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Introgressive hybridization as the breakdown of postzygotic isolation: a theoretical perspective
Author(s) -
Tanaka Yoshinari
Publication year - 2007
Publication title -
ecological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.628
H-Index - 68
eISSN - 1440-1703
pISSN - 0912-3814
DOI - 10.1007/s11284-007-0384-x
Subject(s) - introgression , biology , reproductive isolation , evolutionary biology , perspective (graphical) , mechanism (biology) , population , genetics , gene , computer science , artificial intelligence , philosophy , demography , epistemology , sociology
In this paper, both the empirical and theoretical genetic aspects of human‐mediated introgressive hybridization are reviewed in terms of their association with the breakdown of postzygotic isolating mechanisms. I also compare several simulation models with an ecological or genetic focus that are relevant to the prediction and risk assessment of genetic extinction due to hybridization. One barrier to devising comprehensive risk assessment frameworks is a lack of sufficient population genetic studies that associate introgressive hybridization with specific isolating mechanisms. A gametic model based on multilocus underdominant fitness is one of the best genetic models for introgressive hybridization because it explicitly incorporates the postzygotic isolating mechanism known as Dobzhansky–Muller genetic incompatibility.