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Stuck in the middle with you: close concordance between geographical clines in a cricket hybrid zone
Author(s) -
Vines Timothy H.
Publication year - 2014
Publication title -
molecular ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.619
H-Index - 225
eISSN - 1365-294X
pISSN - 0962-1083
DOI - 10.1111/mec.12692
Subject(s) - biology , hybrid zone , divergence (linguistics) , evolutionary biology , cricket , locus (genetics) , natural selection , genetic algorithm , selection (genetic algorithm) , incipient speciation , ecology , gene flow , genetics , genetic variation , gene , linguistics , philosophy , artificial intelligence , computer science
Students of speciation have long recognized that hybridization between populations does not affect all parts of the genome in the same way (Key 1968, Bazykin 1969, Wu 2001, Nosil et al . 2009). For example, divergence is expected to be high at loci involved in Dobzhansky–Muller incompatibilities or at loci under divergent natural selection, while those that are effectively neutral should show only weak divergence. Studies that examine geographical clines at divergent loci in a hybrid zone can be particularly powerful, as here one can estimate how net selection is affecting each locus (Payseur 2010). An excellent example of this approach appears in this issue (Larson et al . 2014) for a hybrid zone between the crickets G ryllus firmus and G ryllus pennsylvanicus in the eastern United States.