Naslov
Karyological analysis of three Astacidae species : a preliminary report

Autori
Pavlica, Mirjana ; Mlinarec, Jelena ; Mužić, Margerita ; Maguire, Ivana ; Šrut, Maja ; Klobučar, Goran Igor Vinko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
International association of astacology 17 (IAA 17) symposium : Program and abstracts / - , 2008

Skup
International association of astacology symposium (17 ; 2008)

Mjesto i datum
Kuopio, Finska, 04.08.2008. - 08.08.2008

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Astacus astacus; Astacus leptodactylus; Austropotamobius torrentium; karyotype

Sažetak
This is a preliminary report on the karyotype analysis of three freshwater crayfish species (Astacus astacus, A. leptodactylus and Austropotamobius torrentium) belonging to family Astacidae, all native to Croatian freshwater habitats. Chromosome number and heterochromatin distribution was studied on metaphase spreads of mitotic and meiotic cells of testis tissue. Chromosomes were stained with 4, 6-diamino-2-phenylindole stain (DAPI) specific for AT rich regions. Preliminary results showed that the chromosome number ranged from 2n=164 for Austropotamobius torrentium, 2n= 176 for Astacus astacus to 2n=180 for Astacus leptodactylus. In karyotype of each species AT rich heterochromatin blocks were observed in centromere region of all chromosomes. Terminal heterochromatin was not observed. Intercalary heterochromatin blocks were also observed on longer chromosome arm of some chromosomes in all three karyotypes (but only the largest ones).

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA