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one publication added to basket [219350]
Age and size of European saltmarshes and the population genetic consequences for ground beetles
Desender, K.; Backeljau, T.; Delahaye, K.; De Meester, L. (1998). Age and size of European saltmarshes and the population genetic consequences for ground beetles. Oecologia 114(4): 503-513. https://dx.doi.org/10.1007/s004420050474
In: Oecologia. Springer: Heidelberg; Berlin. ISSN 0029-8549; e-ISSN 1432-1939
Peer reviewed article  

Available in  Authors 

Keywords
    Biology > Genetics > Population genetics
    Water bodies > Inland waters > Wetlands > Marshes > Salt marshes
    Carabidae Latreille, 1802 [WoRMS]
    Belgium, Het Zwin natuurreservaat
    Marine/Coastal
Author keywords
    ground beetles; biodiversity; genetic differentiation; habitatfragmentation; wing polymorphism

Authors  Top 
  • Desender, K.
  • Backeljau, T.
  • Delahaye, K.
  • De Meester, L.

Abstract
    Enzyme and dispersal polymorphisms of the saltmarsh carabid beetles Pogonus chalceus and Dicheirotrichus gustavii were studied in European populations varying in size and in isolation in space and time. D. gustavii, a constantly fullwinged species, has a larger genetic diversity and a smaller genetic differentiation between populations than the wing-polymorphic P. chalceus. Clear relationships between population or site characteristics and genetic structure were not observed, except for the special position taken by some small populations in both species. The dispersal power of P. chalceus in small populations is larger than in large populations, suggesting that these populations are unstable and/or young. Small populations, however, do not always show a lower genetic diversity than large populations, as would be expected from genetic drift. Dispersal power in P. chalceus declines with increasing age of the saltmarsh, probably due to continuous emigration of winged individuals. Age and size of saltmarshes, although difficult to study independently, both appear to be important in determining the genetic structure of saltmarsh beetles. Maximum diversity in both parameters is therefore recommended as an optimal nature conservation strategy.

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