Deme Formation in a Dispersive Gall-Forming Midge

  • Peter Stiling
  • Anthony M. Rossi


Deme formation in herbivores was originally thought to result from breeding within isolated populations that are highly adapted to their host plant (Edmunds and Alstad 1978). If some herbivore genotypes have advantages over others on particular hosts, and this variation is heritable over time, then these isolated populations, or demes, should diverge from the parent population and become reproductively isolated.


Wing Length Plant Clone Scale Insect Mountain Birch Reciprocal Transplant 
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Copyright information

© Springer Science+Business Media Dordrecht 1998

Authors and Affiliations

  • Peter Stiling
    • 1
  • Anthony M. Rossi
    • 1
  1. 1.Department of BiologyUniversity of South FloridaTampaUSA

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