Pregled bibliografske jedinice broj: 618819
First large-scale genetic analysis of the vulnerable noble crayfish Astacus astacus in Europe
First large-scale genetic analysis of the vulnerable noble crayfish Astacus astacus in Europe // Book of Abstracts IAA 19 / Füreder, Leopold (ur.).
Innsbruck, 2012. str. 48-48 (predavanje, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 618819 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
First large-scale genetic analysis of the vulnerable noble crayfish Astacus astacus in Europe
Autori
Schrimpf, Anne ; Theissinger, Kathrin ; Dahlem, Jennifer ; Pârvulescu, Lucian ; Maguire, Ivana ; Schulz, Holger, Schulz, Ralf
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Book of Abstracts IAA 19
/ Füreder, Leopold - Innsbruck, 2012, 48-48
Skup
IAA 19 Symposium
Mjesto i datum
Innsbruck, Austrija, 26.08.2012. - 31.08.2012
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
phylogeography; haplotype diversity; microsatellite analysis; human translocation; glacial refugia
Sažetak
Global changes, human impact and climatic cycles had a severe impact on the distribution and diversity of the vulnerable European noble crayfish Astacus astacus. The main aim of this study was to resolve the natural genetic structure of European noble crayfish populations and to estimate to what degree human translocations dissolved the natural genetic make-up. We sampled 500 individuals from 120 populations across Europe. We sequenced a 350 base pair (bp) fragment of the mitochondrial cytochrome oxidase subunit I (COI) and a 500 bp fragment of 16s rRNA (16S). Furthermore, for 24 populations a microsatellite analysis was performed based on six polymorphic loci. Twenty-two COI-haplotypes and sixteen 16S-haplotypes were identified, with each one common haplotype found across the whole study area. The high number of private haplotypes suggested two separate glacial refugia on the western and central Balkan. In contrast, very low haplotype diversities in central Europe were detected, which could result from human translocations and/or founder effects due to postglacial re-colonization. Microsatellites exhibited strong genetic differentiation between central and eastern Europe as well as between the central and western Balkan, but little among central European populations. Despite human translocations a differentiation of noble crayfish populations in all major catchment areas was detectable. Our data thus support the establishment of distinct evolutionary significant units to protect the present-day genetic diversity of A. astacus in Europe.
Izvorni jezik
Engleski
Znanstvena područja
Biologija
