Phylogeny and phylogeography of the white-clawed crayfish (Austropotamobius pallipes complex) in the rivers of the Adriatic Basin

Jelić, Mišel (2014) Phylogeny and phylogeography of the white-clawed crayfish (Austropotamobius pallipes complex) in the rivers of the Adriatic Basin. Doctoral thesis, Faculty of Science > Department of Biology.

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Abstract

Systematics of the white-clawed crayfish is continuously debated and as such caused problems for effective conservation and population management. To improve the knowledge on this endangered species, its phylogenetic position and species phylogeography within the Adriatic Basin were revised using results from analyses of mitochondrial DNA (mtDNA), codominant nuclear DNA markers (microsatellites), and morphometrics. Analyses on mtDNA resulted with description of new lineages. Distribution of mtDNA lineages is geographically non-random and can be related to geological history of the Adriatic region dated from Messinian salinity crisis until Pleistocene marine regressions. Microsatellites analyses revealed introgression and admixture of nuclear genome between distinct mtDNA lineages. Morphometrical analyses resulted with two population groups, the Po Basin group and the Eastern Adriatic and Central Italy group. It should be emphasized that results of morphometrical analyses are in line with genetic structure obtained from microsatellites analyses, indicating the existence of two population groups. The obtained results enabled definition of Evolutionary Significant Units and Management Units. It was confirmed that the white-clawed crayfish conservation and population management should rely on results of multiple analyses (molecular and morphological).

Item Type: Thesis (Doctoral thesis)
Keywords: the white-clawed crayfish, mtDNA sequences, microsatellites, morphometrics, Adriatic Sea Basin, trans-Adriatic dispersal routes
Supervisor: Maguire, Ivana and Grandjean, Frédéric
Date: 2014
Number of Pages: 103
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Silvana Šehić
Date Deposited: 19 Jan 2015 12:18
Last Modified: 19 Jan 2015 12:18
URI: http://digre.pmf.unizg.hr/id/eprint/3595

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