Karyological analysis of freshwater crayfish Austropotamobius pallipes (Lereboullet, 1858) and Austropotamobius torrentium (Schrank, 1803)

Porupski, Ines (2014) Karyological analysis of freshwater crayfish Austropotamobius pallipes (Lereboullet, 1858) and Austropotamobius torrentium (Schrank, 1803). Diploma thesis, Faculty of Science > Department of Biology.

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Abstract

The aim of this study was karyological investigation of the European native crayfish species Austropotamobius pallipes and A. torrentium. The karyotype of A. pallipes consists of 2n=168 chromosomes, while the karyotipe of A. torrentium consists of 2n=164. The karyotype formulas are 148m+18sm+2a and 148m+16sm for A. pallipes and A. torrentium, respectively. Fluorochrome staining with 4,6-diamino-2-phenylindole (DAPI) has revealed that the majority of chromosomes of both A. pallipes and A. torrentium are characterised by large heterochromatic blocks located in the centromeric and pericentromeric positions. Some of A. torrentium chromosomes didn’t show centromeric bands, while some of the chromosomes of both species revealed presence of intercalary positioned heterochromatc bands.

Item Type: Thesis (Diploma thesis)
Keywords: genus Austropotamobius, Astacidae, karyotype, DAPI
Supervisor: Maguire, Ivana
Co-supervisor: Mlinarec Novosel, Jelena
Date: 2014
Number of Pages: 42
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Silvana Šehić
Date Deposited: 13 Nov 2014 12:14
Last Modified: 13 Nov 2014 12:14
URI: http://digre.pmf.unizg.hr/id/eprint/3262

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