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Reproductive character displacement is not the only possible outcome of reinforcement
Author(s) -
Lemmon A. R.,
Smadja C.,
Kirkpatrick M.
Publication year - 2004
Publication title -
journal of evolutionary biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.289
H-Index - 128
eISSN - 1420-9101
pISSN - 1010-061X
DOI - 10.1046/j.1420-9101.2003.00643.x
Subject(s) - allopatric speciation , character displacement , biology , reproductive isolation , sympatry , evolutionary biology , character (mathematics) , hybrid zone , trait , hybrid , displacement (psychology) , cline (biology) , mating , zoology , genetics , sympatric speciation , population , gene flow , mathematics , demography , genetic variation , geometry , psychology , botany , sociology , gene , computer science , psychotherapist , programming language
We study the form of the clines in a female mating preference and male display trait using simulations of a hybrid zone. Allopatric populations of two species are connected by demes in a stepping stone arrangement. Results show that reproductive character displacement (a pattern of increased prezygotic isolation in sympatry compared with allopatry) may or may not result when there is reinforcement (defined here as the strengthening of prezygotic isolation as a result of selection against hybrids, relative to the amount of prezygotic isolation present when hybrids are not selected against). Further, reproductive character displacement of the preference may or may not occur when it occurs in the male display. We conclude that the absence of reproductive character displacement is not evidence against the operation of reinforcement.