Biology Bulletin

, Volume 39, Issue 1, pp 36–44 | Cite as

Biotope principles of sympatry and interspecies hybridization in mammals (by the example of the genus Spermophilus)

  • S. V. TitovEmail author
  • A. A. Shmyrov
  • A. A. Kuz’min


Two hybridization zones were taken as an example (the russet ground squirrel (Spermophilus major) and the speckled ground squirrel (S. suslicus), the russet ground squirrel and the yellow ground squirrel S. fulvus) to show that biotope characteristics determine segregation of sympatric species in contact colonies. The heterogeneity of biotopes with regard to the requirements of sympatric species promotes their long-term and steady dispersal and, in rare cases, sporadic hybridization. A biotope with a homogenous environment enables wide interspecies hybridization and a rapid increase in the ratio of hybrids in the colony.


Biology Bulletin Ground Squirrel Discriminant Function Analysis Sympatric Species Hybrid Colony 
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Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • S. V. Titov
    • 1
    Email author
  • A. A. Shmyrov
    • 2
  • A. A. Kuz’min
    • 3
  1. 1.Belinskii Penza State Pedagogical UniversityPenzaRussia
  2. 2.Severtsov Institute of Ecology and EvolutionMoscowRussia
  3. 3.Penza State Technological AcademyPenzaRussia

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