Naslov
Morphological characteristics of Astacus Leptodactylus from Croatia

Autori
MaguireE, Ivana ; Beljan, Leopoldina ; Klobučar, Goran

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

Izvornik
International Association of Astacology 17 Symposium (IAA 17) : 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
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Astacus leptodactylus; morphometrics; meristics

Sažetak
Narrowed-clawed crayfish (Astacus leptodactylus) is one of four native European freshwater crayfish inhabiting Croatian waters. Its presence was for the first time officially recorded relatively recently in the Sava River. Since then it was discovered in several rivers belonging to the Sava River basin, and in some rivers in the Drava-Danube basin. At the same time it was possible to get narrowed-clawed crayfish, imported from Armenia. Their appearance was different from Croatian A. leptodactylus, therefore a comparative analyses of morphological characteristics were applied. Altogether 153 animals were analysed (131 from 5 Croatian populations and 22 from Armenia), and 23 morphometrical characteristics (from which 6 were bilateral) and 4 bilateral meristic characteristics per crayfish were measured. Additionally, 2 meristic characteristics per each sex were recorded. As expected, we found statistically significant differences between males and females in morphometrical characteristics of claws and abdomen, which are known to grow allometrically after sexual maturity is reached. The results of ANOVA have shown that narrowed-clawed crayfish originating from different populations differ significantly in recorded morphometric and meristic characteristics, both between Croatian and between Croatian and Armenian populations. Multivariate discriminant analysis was applied to identify morphometric and meristic characteristics that best separate groups of A. leptodactylus and the results are discussed in details. Phylogenetic tree, accomplished on the basis of mitochondrial 16S and COI genes sequences, confirmed results obtained by morphological analyses.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA