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Author (up) Rova, E.; Bjorklund, M. url  doi
openurl 
  Title Can preference for oviposition sites initiate reproductive isolation in Callosobruchus maculatus? Type Journal Article
  Year 2011 Publication PloS One Abbreviated Journal PLoS One  
  Volume 6 Issue 1 Pages e14628  
  Keywords  
  Abstract Theory has identified a variety of evolutionary processes that may lead to speciation. Our study includes selection experiments using different host plants and test key predictions concerning models of speciation based on host plant choice, such as the evolution of host use (preference and performance) and assortative mating. This study shows that after only ten generations of selection on different resources/hosts in allopatry, strains of the seed beetle Callosobruchus maculatus develop new resource preferences and show resource-dependent assortative mating when given the possibility to choose mates and resources during secondary contact. The resulting reduced gene flow between the different strains remained for two generations after contact before being overrun by disassortative mating. We show that reduced gene flow can evolve in a population due to a link between host preference and assortative mating, although this result was not found in all lines. However, consistent with models of speciation, assortative mating alone is not sufficient to maintain reproductive isolation when individuals disperse freely between hosts. We conclude that the evolution of reproductive isolation in this system cannot proceed without selection against hybrids. Other possible factors facilitating the evolution of isolation would be longer periods of allopatry, the build up of local adaptation or reduced migration upon secondary contact.  
  Address Department of Animal Ecology, Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden. emma.rova@ebc.uu.se  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1932-6203 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:21297947 Approved no  
  Call Number WNE @ klipson @ Serial 55  
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