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Fragmentation genetics of the grassland butterfly Polyommatus coridon : Stable genetic diversity or extinction debt?

Title data

Habel, Jan Christian ; Brückmann, Sabrina V. ; Krauss, Jochen ; Schwarzer, Julia ; Weig, Alfons ; Husemann, Martin ; Steffan-Dewenter, Ingolf:
Fragmentation genetics of the grassland butterfly Polyommatus coridon : Stable genetic diversity or extinction debt?
In: Conservation Genetics. Vol. 16 (December 2015) Issue 3 . - pp. 549-558.
ISSN 1572-9737
DOI: https://doi.org/10.1007/s10592-014-0679-8

Abstract in another language

Habitat fragmentation can have severe effects on the intraspecific variability of populations and thus plays a pivotal role in species conservation. Especially taxa with specific habitat demands and low dispersal behaviour suffer from habitat fragmentation. One such taxon, the Chalk-hill Blue butterfly, Polyommatus coridon, nowadays mostly occurs in small and isolated, calcareous grasslands across Central Europe. Here we investigate the population genetic structure of 15 local populations of this butterfly species over major parts of the Fränkische Schweiz (south-east Germany). Based on seven polymorphic microsatellites we estimate genetic diversity and differentiation. We use the data to test for potential effects of different habitat sizes, habitat connectivity, and population density. We found high genetic diversity but no significant genetic differentiation among the 15 local populations (F ST = 0.0087, P > 0.05). Genetic diversity was not correlated with habitat size, habitat connectivity, or census population size. But, we found a marginally positive correlation between increasing habitat connectivity and population density (r 2 = 0.31, P < 0.05). Compared to other butterfly species, our data resemble a generalist species with well connected populations rather than a specialist taxon existing in a highly fragmented landscape. The high genetic diversity and the lack of differentiation might either be the result of relatively large and stable local populations and ongoing gene flow, or is the genetic legacy of formerly large and interconnected populations during periods of extensive agriculture.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER127680
Keywords: Census population size; Genetic diversity; Genetic differentiation; Habitat fragmentation; Habitat connectivity; Habitat size
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Professorship Animal Population Ecology
Result of work at the UBT: Yes
DDC Subjects: 500 Science
500 Science > 570 Life sciences, biology
500 Science > 590 Animals (Zoology)
Date Deposited: 26 Feb 2015 06:17
Last Modified: 30 Sep 2015 05:30
URI: https://eref.uni-bayreuth.de/id/eprint/7564