Kategorie |
Textpublikation |
Referenztyp |
Buchkapitel |
Titel (primär) |
Untersuchungen zur Populationsgenetik und Besiedlung der Niederlausitz am Beispiel des Sandohrwurmes Labidura riparia |
Titel (sekundär) |
Landschaft im Wandel. Natürliche und anthropogene Besiedlung der Niederlausitzer Bergbaufolgelandschaft |
Autor |
Güth, M.; Wiegleb, G.; Durka, W.
|
Herausgeber |
Wöllecke, J.; Anders, K.; Durka, W.; Elmer, M.; Wanner, M.; Wiegleb, G. |
Quelle |
Berichte aus der Biologie |
Erscheinungsjahr |
2007 |
Department |
BZF |
Seite von |
145 |
Seite bis |
160 |
Sprache |
deutsch |
Keywords |
earwig, Labidura riparia, population structure, microsatellites, colonization, postmining- Jandscape, Lower Lusatia |
Abstract |
Secondary habitats, like open cast mines, represent
ideal cases for the study of colonization process in the course of ongoing succession. We used molecular methods to study the population structure of
the earwig Labidura riparia (Pallas 1772, Dermaptera) in
the post-mining landscape in Lower Lusatia. Genetic diversity of highly
polymorphic microsatellite markers was analysed in earwig populations of
disturbed secondary habitats, i.e. post-mining landscapes (PML) and former
military training areas (MTA) and of primary habitats from coastal and inland sand dunes. The
earwig is a rare habitat specialist and inhabits sandy but damp sites
free of vegetation or with sparse vegetation. First, observations of L. riparia
in Lusatia were made in the middle of
last century in secondary habitats like open cast mines or sand and gravel pits. Out of 21 investigated
populations those from secondary habitats have higher number of alleles and
higher gene diversity than populations from primary
habitats. Genetic depletion at secondary habitats due to
bottlenecks was not evident. Age of sampling site and type of succession
(PML sites with primary succession, MTA with secondary
succession) had no impact on
gene diversity. A correlation between geographic distance and genetic distances
indicates that ongoing gene flow counterbalances
genetic drift:. The two primary habitats, coastal and inland dunes were
significantly different indicating strong isolation among these spatially distant habitats. Some alleles were missing in coastal populations which may be due to
demographic bottlenecks. Secondary habitats (PML, MT A) were more closely
related to inland dune than to the coastal populations which suggests that
earwigs which colonised Lusatia did not come from coastal populations but probably from an inland dune (Klein Schmölen) near
river Elbe. The results suggest that Labidura riparia individuals can overcome larger
distances, possibly by flying. Due to their large population size and high
genetic variability the Labidura riparia populations of the post mining landscape
may become source habitats for further colonizations.
|
dauerhafte UFZ-Verlinkung |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=1821 |
Güth, M., Wiegleb, G., Durka, W. (2007):
Untersuchungen zur Populationsgenetik und Besiedlung der Niederlausitz am Beispiel des Sandohrwurmes Labidura riparia
In: Wöllecke, J., Anders, K., Durka, W., Elmer, M., Wanner, M., Wiegleb, G. (Hrsg.)
Landschaft im Wandel. Natürliche und anthropogene Besiedlung der Niederlausitzer Bergbaufolgelandschaft
Berichte aus der Biologie
Shaker, Aachen, S. 145 - 160 |