Alpine populations of <i>Pyramidula pusilla</i>: A closer look into the species phylogeography (Gastropoda: Pulmonata: Pyramidulidae). Kirchner, S., Kruckenhauser, L., Sattmann, H., Duda, M., Harl, J., & Haring, E. In Johnsbach, Austria, August, 2014. abstract bibtex Even though the alpine land snail Pyramidula pusilla (VALLOT, 1801) is the most widespread species of the monotypic family Pyramidulidae, it often remains unnoticed, which might be due to its small and inconspicuous shell. Its distribution ranges from the Mediterranean area to Western and Central Europe where it inhabits sunlit limestone and feeds on endolithic lichens. Although it is quite common, nobody has taken a closer look into its phylogeography so far. In the present study, genetic and morphometric analyses were performed to gather first insights into intraspecific diversity and phylogeography of P. pusilla with a special focus on its Eastern Alpine distribution. A total of 357 individuals were investigated genetically, whereof 143 were also used for morphometric analyses. The individuals were collected at 98 different sampling sites located mainly in the Eastern Alps. After DNA extraction, amplification and sequencing of a \textasciitilde650 bp section of the mitochondrial cytochrome c oxidase subunit 1 (COI) gene was performed. The phylogenetic trees obtained from the sequence data reveal, besides two clades with a distribution in the Balkans and Western Asia, at least two distinct Alpine clades that appear also differentiated in the multivariate morphometric analysis. However, the analysis of the geographic coordinates of the differentiated Alpine clades shows no specific geographic pattern. An additional task was to uncover potential refugia and postglacial migration-scenarios by combining the results of the genetic and morphometric analysis with information on the geographic occurrence of the different clades. The results imply that the species most likely survived the last glacial period in several refugia. Considering the current distribution of P. pusilla, passive dispersal seems to have occurred frequently and has probably played an important role in the phylogeographic history of P. pusilla. Whether the findings of these distinct clades indicate the division of P. pusilla into two separate species or merely express a high degree of genetic variation within Alpine populations of P. pusilla has to be investigated by further studies on gene flow and reproductive barriers.
@inproceedings{kirchner_alpine_2014,
address = {Johnsbach, Austria},
title = {Alpine populations of \textit{{Pyramidula} pusilla}: {A} closer look into the species phylogeography ({Gastropoda}: {Pulmonata}: {Pyramidulidae})},
abstract = {Even though the alpine land snail Pyramidula pusilla (VALLOT, 1801) is the most widespread species of the monotypic family Pyramidulidae, it often remains unnoticed, which might be due to its small and inconspicuous shell. Its distribution ranges from the Mediterranean area to Western and Central Europe where it inhabits sunlit limestone and feeds on endolithic lichens. Although it is quite common, nobody has taken a closer look into its phylogeography so far.
In the present study, genetic and morphometric analyses were performed to gather first insights into intraspecific diversity and phylogeography of P. pusilla with a special focus on its Eastern Alpine distribution. A total of 357 individuals were investigated genetically, whereof 143 were also used for morphometric analyses. The individuals were collected at 98 different sampling sites located mainly in the Eastern Alps. After DNA extraction, amplification and sequencing of a {\textasciitilde}650 bp section of the mitochondrial cytochrome c oxidase subunit 1 (COI) gene was performed. The phylogenetic trees obtained from the sequence data reveal, besides two clades with a distribution in the Balkans and Western Asia, at least two distinct Alpine clades that appear also differentiated in the multivariate morphometric analysis. However, the analysis of the geographic coordinates of the differentiated Alpine clades shows no specific geographic pattern. An additional task was to uncover potential refugia and postglacial migration-scenarios by combining the results of the genetic and morphometric analysis with information on the geographic occurrence of the different clades. The results imply that the species most likely survived the last glacial period in several refugia. Considering the current distribution of P. pusilla, passive dispersal seems to have occurred frequently and has probably played an important role in the phylogeographic history of P. pusilla.
Whether the findings of these distinct clades indicate the division of P. pusilla into two separate species or merely express a high degree of genetic variation within Alpine populations of P. pusilla has to be investigated by further studies on gene flow and reproductive barriers.},
language = {English},
author = {Kirchner, Sandra and Kruckenhauser, Luise and Sattmann, Helmut and Duda, Michael and Harl, Josef and Haring, Elisabeth},
month = aug,
year = {2014},
keywords = {Pyramidula},
}
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Its distribution ranges from the Mediterranean area to Western and Central Europe where it inhabits sunlit limestone and feeds on endolithic lichens. Although it is quite common, nobody has taken a closer look into its phylogeography so far. In the present study, genetic and morphometric analyses were performed to gather first insights into intraspecific diversity and phylogeography of P. pusilla with a special focus on its Eastern Alpine distribution. A total of 357 individuals were investigated genetically, whereof 143 were also used for morphometric analyses. The individuals were collected at 98 different sampling sites located mainly in the Eastern Alps. After DNA extraction, amplification and sequencing of a \\textasciitilde650 bp section of the mitochondrial cytochrome c oxidase subunit 1 (COI) gene was performed. The phylogenetic trees obtained from the sequence data reveal, besides two clades with a distribution in the Balkans and Western Asia, at least two distinct Alpine clades that appear also differentiated in the multivariate morphometric analysis. However, the analysis of the geographic coordinates of the differentiated Alpine clades shows no specific geographic pattern. An additional task was to uncover potential refugia and postglacial migration-scenarios by combining the results of the genetic and morphometric analysis with information on the geographic occurrence of the different clades. The results imply that the species most likely survived the last glacial period in several refugia. Considering the current distribution of P. pusilla, passive dispersal seems to have occurred frequently and has probably played an important role in the phylogeographic history of P. pusilla. Whether the findings of these distinct clades indicate the division of P. pusilla into two separate species or merely express a high degree of genetic variation within Alpine populations of P. pusilla has to be investigated by further studies on gene flow and reproductive barriers.","language":"English","author":[{"propositions":[],"lastnames":["Kirchner"],"firstnames":["Sandra"],"suffixes":[]},{"propositions":[],"lastnames":["Kruckenhauser"],"firstnames":["Luise"],"suffixes":[]},{"propositions":[],"lastnames":["Sattmann"],"firstnames":["Helmut"],"suffixes":[]},{"propositions":[],"lastnames":["Duda"],"firstnames":["Michael"],"suffixes":[]},{"propositions":[],"lastnames":["Harl"],"firstnames":["Josef"],"suffixes":[]},{"propositions":[],"lastnames":["Haring"],"firstnames":["Elisabeth"],"suffixes":[]}],"month":"August","year":"2014","keywords":"Pyramidula","bibtex":"@inproceedings{kirchner_alpine_2014,\n\taddress = {Johnsbach, Austria},\n\ttitle = {Alpine populations of \\textit{{Pyramidula} pusilla}: {A} closer look into the species phylogeography ({Gastropoda}: {Pulmonata}: {Pyramidulidae})},\n\tabstract = {Even though the alpine land snail Pyramidula pusilla (VALLOT, 1801) is the most widespread species of the monotypic family Pyramidulidae, it often remains unnoticed, which might be due to its small and inconspicuous shell. Its distribution ranges from the Mediterranean area to Western and Central Europe where it inhabits sunlit limestone and feeds on endolithic lichens. Although it is quite common, nobody has taken a closer look into its phylogeography so far.\nIn the present study, genetic and morphometric analyses were performed to gather first insights into intraspecific diversity and phylogeography of P. pusilla with a special focus on its Eastern Alpine distribution. A total of 357 individuals were investigated genetically, whereof 143 were also used for morphometric analyses. The individuals were collected at 98 different sampling sites located mainly in the Eastern Alps. After DNA extraction, amplification and sequencing of a {\\textasciitilde}650 bp section of the mitochondrial cytochrome c oxidase subunit 1 (COI) gene was performed. The phylogenetic trees obtained from the sequence data reveal, besides two clades with a distribution in the Balkans and Western Asia, at least two distinct Alpine clades that appear also differentiated in the multivariate morphometric analysis. However, the analysis of the geographic coordinates of the differentiated Alpine clades shows no specific geographic pattern. An additional task was to uncover potential refugia and postglacial migration-scenarios by combining the results of the genetic and morphometric analysis with information on the geographic occurrence of the different clades. The results imply that the species most likely survived the last glacial period in several refugia. 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