Jesse, Ruth and Pfenninger, Markus and Fratini, Sara and Scalici, Massimiliano and Streit, Bruno and Schubart, Christoph D. (2009) Disjunct distribution of the Mediterranean freshwater crab Potamon fluviatile-natural expansion or human introduction? BIOLOGICAL INVASIONS, 11 (10). pp. 2209-2221. ISSN 1387-3547,
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Human mediated biological invasions are seen as an increasing danger for biodiversity. On the other hand, range expansions are natural processes. It is often practically not possible to tell these processes apart, like in the case of the freshwater crab Potamon fluviatile. This species has a disjunct distribution on the Balkan Peninsula, Italy, Sicily and Malta. An innovative analysis framework involving phylogeographic model selection and temporal coalescent analyses on a mitochondrial dataset (COI and NADH1) could clarify that the origin of the species was on the Balkans and the colonisation of Italy proceeded from the northern Balkans via southern Italy in the Otranto Strait region. The population expansion associated with this invasion was estimated to have taken place 15,000 years before present (95% c.f. 10,000-24,000 years BP). An anthropogenic introduction is therefore implausible and a natural expansion likely. We argue that the species should thus be included in the national conservation management in Italy.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SNAIL LITTORINA-LITTOREA; MODEL SELECTION; NORTH-AMERICA; EVOLUTION; HISTORY; INFERENCE; INVASION; CONSERVATION; DISTINGUISH; PHYLOGENIES; Phylogeography; Model selection; Adriatic Sea; Coalescent demographic analyses; LGM sea level; Conservation |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie > Zoologie/Evolutionsbiologie (Prof. Dr. Jürgen Heinze) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Aug 2020 10:58 |
| Last Modified: | 27 Aug 2020 10:58 |
| URI: | https://pred.uni-regensburg.de/id/eprint/28000 |
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