caa a22 4500 477091377 CHVBK 20180405111516.0 cr unu---uuuuu 170330e19960301xx s 000 0 eng 10.1007/BF01241784 doi (NATIONALLICENCE)springer-10.1007/BF01241784 Conditions for sympatric speciation: A diploid model incorporating habitat fidelity and non-habitat assortative mating [Elektronische Daten] [Paul Johnson, F. Hoppensteadt, James Smith, Guy Bush] Summary: Three types of genes have been proposed to promote sympatric speciation: habitat preference genes, assortative mating genes and habitat-based fitness genes. Previous computer models have analysed these genes separately or in pairs. In this paper we describe a multilocus model in which genes of all three types are considered simultaneously. Our computer simulations show that speciation occurs in complete sympatry under a broad range of conditions. The process includes an initial diversification phase during which a slight amount of divergence occurs, a quasi-equilibrium phase of stasis during which little or no detectable divergence occurs and a completion phase during which divergence is dramatic and gene flow between diverging habitat morphs is rapidly eliminated. Habitat preference genes and habitat-specific fitness genes become associated when assortative mating occurs due to habitat preference, but interbreeding between individuals adapted to different habitats occurs unless habitat preference is almost error free. However, ‘nonhabitat assortative mating', when coupled with habitat preference can eliminate this interbreeding. Even when several loci contribute to the probability of expression of non-habitat assortative mating and the contributions of individual loci are small, gene flow between diverging portions of the population can terminate within less than 1000 generations. Chapman & Hall, 1996 speciation nationallicence habitat-sympatric divergence nationallicence divergent selection nationallicence habitat preference nationallicence assortative mating nationallicence linkage disequilibrium nationallicence penetrance nationallicence Johnson Paul NSF Center for Microbial Ecology, Michigan State University, 48824, East Lansing, MI, USA aut Hoppensteadt F. Department of Mathematics, Department of Statistics and Probability and NSF Center for Microbial Ecology, Michigan State University, 48824, East Lansing, MI, USA aut Smith James Department of Zoology and NSF Center for Microbial Ecology, Michigan State University, 48824, East Lansing, MI, USA aut Bush Guy Department of Entomology, Department of Zoology and NSF Center for Microbial Ecology, Michigan State University, 48824, East Lansing, MI, USA aut Evolutionary Ecology Kluwer Academic Publishers 10/2(1996-03-01), 187-205 0269-7653 10:2<187 1996 10 10682 https://doi.org/10.1007/BF01241784 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01241784 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Johnson Paul NSF Center for Microbial Ecology, Michigan State University, 48824, East Lansing, MI, USA aut NATIONALLICENCE 700 1- Hoppensteadt F. Department of Mathematics, Department of Statistics and Probability and NSF Center for Microbial Ecology, Michigan State University, 48824, East Lansing, MI, USA aut NATIONALLICENCE 700 1- Smith James Department of Zoology and NSF Center for Microbial Ecology, Michigan State University, 48824, East Lansing, MI, USA aut NATIONALLICENCE 700 1- Bush Guy Department of Entomology, Department of Zoology and NSF Center for Microbial Ecology, Michigan State University, 48824, East Lansing, MI, USA aut NATIONALLICENCE 773 0- Evolutionary Ecology Kluwer Academic Publishers 10/2(1996-03-01), 187-205 0269-7653 10:2<187 1996 10 10682 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer