Gene flow within and between regions: The population genetic structure of the phantom midge Chaoborus crystallinus (Diptera: Chaoboridae)

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Thomas Berendonk - , Max Planck Institute for Evolutionary Biology, NERC Centre for Population Biology (Autor:in)
  • Ken Spitze - , Max Planck Institute for Evolutionary Biology (Autor:in)

Abstract

To determine the gene flow of Chaoborus crystallinus, populations throughout Europe were sampled. To test if the gene flow is higher within regions than between regions and to investigate if regional populations may act as metapopulations, four regions with several populations each were examined. For a detailed analysis of the regional gene flow, subregions within one region were analysed. Allozymes and mitochondrial restriction fragment length polymorphism (RFLP) were used to estimate the relative amounts of gene flow. On the European scale gene flow between populations within regions is higher than between regions. On the regional scale, gene flow between subregions is higher than between populations within subregions. Generally, the genetic differentiation between populations within regions is higher for the mitochondrial RFLP data than for the allozyme data. These results suggest that most of the dispersal is female dominated and mostly takes place between populations within regions. Due to this extensive regional gene flow, local adaptation may be influenced by regional processes. This might have interesting implications for the coevolution of the predator C. crystallinus and its plankton prey.

Details

OriginalspracheEnglisch
Seiten (von - bis)147-154
Seitenumfang8
FachzeitschriftLimnologica
Jahrgang36
Ausgabenummer3
PublikationsstatusVeröffentlicht - 29 Sept. 2006
Peer-Review-StatusJa
Extern publiziertJa

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

  • C. crystallinus, Chaoborus, Genetic population structure, Metapopulation, Plankton, Ponds