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Social Behavior and Its Effects on Colony- and Microgeographic Genetic Structure in Phytophagous Insect Populations

  • James T. Costa

Abstract

Population genetic structure is defined in terms of deviation from panmixis, or random mating, and explicitly refers to nonrandom spatial association of alleles. Nonrandom associations may arise in several ways as a natural consequence of the interplay among behavioral, ecological, and biogeographic factors. At large (macrogeographic) spatial scales, genetic differences between subpopulations may be maintained by natural selection or result from genetic drift associated with isolation by distance and attenuated gene flow. The causes of microgeographic structure—here defined as structure at the spatial scale of individual host plants and localized host plant groups—are more varied. Spatial genotypic association could arise from the joint effects of reproductive output and dispersal whereby physical association is the outcome of environmental constraints such as predation pressure and lack of suitable habitat. On the other hand, behaviors promoting association of related individuals can also produce highly patchy, localized units of genetic structure.

Keywords

Social Insect Mating Frequency Colony Founding Local Population Density Population Genetic Pattern 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1998

Authors and Affiliations

  • James T. Costa
    • 1
  1. 1.Museum of Comparative ZoologyHarvard UniversityCambridgeUSA

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