Naslov
Population characteristics of the stone crayfish from natural undisturbed habitat and habitat under anthropogenic pressure

Autori
Jurković, Tamara ; Lucić, Andreja ; Maguire Ivana

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

Izvornik
XXI Symposium of the International Association of Astacology - Program and book of Abstract / Javier Diéguez-Uribeondo - Madrid, 2016, 71-71

Skup
XXI Symposium of the International Association of Astacology

Mjesto i datum
Madrid, Španjolska, 05.09.2016. - 08.09.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Austropotamobius torrentium; population size; morphometry; habitat protection

Sažetak
The stone crayfish (Austropotamobius torrentium) is a native European species inhabiting streams at higher altitudes with rocky bottoms, with a large number of shelters. Within Croatia stone crayfish can be found in waterbodies of the Black Sea drainage, with some populations recorded in the Adriatic Sea drainage. In the last few decades stone crayfish populations are disappearing due to negative anthropogenic impact upon their habitats and the presence of invasive non-indigenous crayfish species. This study was conducted in order to get insight into the stone crayfish population characteristics in the natural and anthropogenically affected habitats. To that end 7-days field work was carried out along different parts of a stream ; the natural course and the course under anthropogenic influence (channelized part and part within the settlement). Data on the habitat characteristics, population density, crayfish morphometrics, size structure, sex ratio and body condition were collected and analysed, and comparisons among different parts of the stream made. Expectedly, stone crayfish population in the natural part of the stream was estimated as the biggest with crayfish in the best body condition. The results confirm the high sensitivity of stone crayfish to environmental changes and indicate the great importance and necessity to preserve natural habitats of this species.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA