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Genetic diversity of stone crayfish Austropotamobius torrentium in marginal areas of its distribution
Pešek, Pavel ; Petrusek, Adam (advisor) ; Kouba, Antonín (referee)
Central Europe north of the Alps was colonized by one of the Balkan haplotype lineage of stone crayfish Austropotamobius torrentium after the end of the last ice age. Stone crayfish is considered a native species in the basins of the Danube and the Rhine. The origin of populations from the Elbe basin is still debated. Most of recent European studies dealing with the crayfish distribution indicate the stone crayfish in Elbe basin as non-indigenous species. The main aim of my work was to evaluate the question of the origin of stone crayfish in the Elbe catchment by describing the distribution of genetic variability, which has not been yet studied in the Elbe river basin for this species. I have used 617 base pairs long section of mitochondrial gene for small subunit I of cytochrome c oxidase (COI). The variability of this marker is reduced in area on the north of Alps, which agrees with assumption of rapid colonization after the end of last ice age. Observed haplotype diversity is nevertheless sufficient to suggest the most likely scenario. Among 22 populations from Elbe basin, one dominant and three rare haplotypes were found. Individuals from the isolated Luční creek close to the Krkonoše (Giant Mountains) region have a haplotype that has so far been found only in central Slovenia, and this population has...
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Genetic diversity of stone crayfish Austropotamobius torrentium in marginal areas of its distribution
Pešek, Pavel ; Petrusek, Adam (advisor) ; Kouba, Antonín (referee)
Central Europe north of the Alps was colonized by one of the Balkan haplotype lineage of stone crayfish Austropotamobius torrentium after the end of the last ice age. Stone crayfish is considered a native species in the basins of the Danube and the Rhine. The origin of populations from the Elbe basin is still debated. Most of recent European studies dealing with the crayfish distribution indicate the stone crayfish in Elbe basin as non-indigenous species. The main aim of my work was to evaluate the question of the origin of stone crayfish in the Elbe catchment by describing the distribution of genetic variability, which has not been yet studied in the Elbe river basin for this species. I have used 617 base pairs long section of mitochondrial gene for small subunit I of cytochrome c oxidase (COI). The variability of this marker is reduced in area on the north of Alps, which agrees with assumption of rapid colonization after the end of last ice age. Observed haplotype diversity is nevertheless sufficient to suggest the most likely scenario. Among 22 populations from Elbe basin, one dominant and three rare haplotypes were found. Individuals from the isolated Luční creek close to the Krkonoše (Giant Mountains) region have a haplotype that has so far been found only in central Slovenia, and this population has...
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