Asymmetric reinforcement in Lucania killifish:assessing reproductive isolation when both sexes choose

作     者：Michelle E.ST.JOHN Rebecca C.FULLER Michelle E.ST.JOHN;Rebecca C.FULLER

作者机构：School of Integrative BiologyUniversity of liois Urbana-ChampaignChampaignIL 61820USA 

出 版 物：《Current Zoology》 (动物学报（英文版）)

年 卷 期：2021年第67卷第2期

页      面：215-224页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学] 

基　　金：Work was funded by the NSF(DEB 0953716) the UI Department of Animal Biology Odum Kendeigh Fund,and the UI School of Integrative Biology Harley and Francis Clark Fund.M.E.St.John was supported by an NIH SEPA Award(R25 OD020203)to B.Hug and R.CE.L.D.Mitchem,J Knox,and Z.Osterholz helped olleet fish 

主　　题：reinforcement behavioral isolatin female mate choice male mate choice asymmetric costs to hybridization 

摘      要：Reinforcement can occur when maladaptive hybridization in sympatry favors the evolution of con-specific preferences and target traits that promote behav ioral isolation(BI).In many systems,enhanced BI is due to increased female preference for *** others,BI is driven by male preference,and in other systems both sexes exert *** of these patterns can be atributed to classic sex-specific costs and benefits of ***,sex differences in conspecific preference can emerge due to asymmetric postzygotic isolation(e.g.,hybrid offspring from female A × male B have lower fitness than hybrid offspring from female B × male A),which can lead to asymmetric BI(e.g.,female A and male B are less likely to mate than female B and male A).Understanding reinforcement requires understanding how conspecific preferences evolve in ***,estimating conspecific preferences can be difficult when both sexes are *** this study,we use Lucania killifish to test the hypothesis that patterns of reinforcement are driven by asymmetric postzygotic isolation between *** true,we predicted that sympatric female Lucania goodei and sympatric male *** should have lower levels of BI compared with their sympatric counterparts,as they produce hybrid offspring with the highest *** address the problem of measuring BI when both sexes are choosy,we inferred the contribution to BI of each partner using assays where one sex in the mating pair comes from an allopatric population with potentially low preference,whereas the other comes from a sympatric population with high *** one hybrid cross direction,we found that both female *** and male *** have high contributions to BI in *** the other hybrid cross direction,we found that only female *** contribute to *** male *** readily engaged in hybrid spawnings with allo-patric *** *** results indicate that both asymmetric postzygotic isolation