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Mitochondrial DNA structure of the Iberian populations of the white-clawed crayfish, Austropotamobius italicus italicus (Faxon, 1914)

AuthorsPedraza-Lara, Carlos; Alda, Fernando ; Carranza, Salvador ; Doadrio, Ignacio
KeywordsMitochondrial DNA
Haplotype diversity
Pleistocene climatic change
Demographic events
Issue DateOct-2010
CitationMolecular Phylogenetics and Evolution 57(1): 327-342 (2010)
AbstractThis study describes the mitochondrial structure of the Iberian population of the white-clawed crayfish Austropotamobius italicus under a phylogeographyc context and considering the genetic variation of the entire taxon distributed in the southern part of Europe. Current sub-specific hypotheses were only partially supported, and a genetic structure related to climatic events is postulated as the main factor explaining its variation. Due to a more extensive sampling and sequencing strategy, the two different mitochondrial lineages of the taxon were found in the Iberian Peninsula, and haplotype variation of populations was observed in a considerable extent regarding that reported in previous studies from other parts of its distribution range. This evidence, together with the timing of Pleistocene expansion events for the Iberian populations (∼10,772-20,004 YBP) as well as an estimated splitting time from Italian populations previous to the last glacial maximum (T= 34,858. years) suggest that the presence of A. italicus in the Iberian Peninsula could be explained by a combination of contrasting dispersal histories and a complex biogeographic scenario. We propose that although possible, human translocations may not be the only cause to explain the complex distribution patterns of species strongly affected by recent climatic events. © 2010 Elsevier Inc.
Publisher version (URL)http://dx.doi.org/10.1016/j.ympev.2010.06.007
Identifiersdoi: 10.1016/j.ympev.2010.06.007
issn: 1055-7903
Appears in Collections:(IBE) Artículos
(MNCN) Artículos
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