Naslov
Comparative analyses of white-clawed crayfish morphological characteristics from the Adriatic sea drainage

Autori
Maguire, Ivana ; Jelić, Mišel ; Ghia, Daniela ; Fea, Gianluca ; Klobučar, Goran

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

Izvornik
Book of Abstracts - Regional European Crayfish Meeting CrayCro / Maguire, Ivana - Zagreb, 2013

Skup
Regional European Crayfish Meeting – CrayCro

Mjesto i datum
Rovinj, Hrvatska, 26.09.2013. - 28.09.2013

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
MDA; Austropotamobius pallipes complex; meristical characteristics; morphometrical characteristics

Sažetak
White-clawed crayfish is a native European species distributed naturally within water bodies of Southern and Western Europe. Due to anthropogenic influence onto their habitats and spread of crayfish plague many populations disappeared and/or were dramatically reduced in their sizes. Hence white-clawed crayfish is treated as endangered and is protected by both international and local legislation. Currently, based on molecular research, white-clawed crayfish is recognised as a complex including two distinct species: Austropotamobius pallipes and Austropotamobius italicus, with four subspecies in the latter. So far, results of white-clawed morphological traits research have not yielded unambiguous and clear separations. Therefore, the aim of this study was to use large morphological and meristical data sets originating from white- clawed crayfish caught in rivers of the Adriatic Sea drainage, and analyse them using the multivariate statistical method. In total 249 crayfish from 9 populations belonging to different subspecies were studied (analysed). Results showed that males and females differ significantly between populations in measured meristical and morphometrical traits. Meristical traits were significantly correlated to the crayfish body size, therefore not reliable for distinguishing populations. From measured morphometrical traits, the most discriminant ones for separating both males and females were those describing rostrum, carapace and claw shape. Overall, percentage of correctly classified crayfish was high (98% for males, 96% for females). Additionally, grouping and separation of studied populations obtained by canonical analyses was in accordance with their taxonomical classification (i.e. subspecies), previously achieved with a molecular approach.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA