The narrow-clawed crayfish ( Pontastacus leptodactylus ) is one of the most ecologically and economically important freshwater species in Turkey. However, harvest this has declined from 7937 t 1984 to 696 2019. One primary reasons for decrease stock use fishing gears with poor size selectivity. In study, new codend designs were investigated improve selectivity fyke nets P. . Seven codends three...

This is an Open distribution, Abstract – Individual identification of the endangered white-clawed crayfish (Austropotamobius pallipes) can provide valuable information when assessing long-term survival of animals released into the wild; currently the most effective method is the use of passive integrated transponders (PIT) tags. A 360 days ex situ experiment was undertaken on 20-month, captive-...

Several European freshwater crayfish species are currently included in one of the IUCN Red list categories. In Iberian Peninsula, native Austropotamobius pallipes complex (the white clawed crayfish, WCC) has experienced a drastic decline since 1973. Implementing conservation management strategies for this requires better understanding patterns and structure its genetic diversity. study, we asse...

BACKGROUND Invasive predators may change the structure of invaded communities through predation and competition with native species. In Europe, the invasive signal crayfish Pacifastacus leniusculus is excluding the native white clawed crayfish Austropotamobius pallipes. METHODOLOGY AND PRINCIPAL FINDINGS This study compared the predatory functional responses and prey choice of native and inva...