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Freshwater Crayfish 12(1): 817-824 (1999)


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Astacus astacus (L.) in the Balaton Region (Hungary) - a summary of surveys between 1992-1998 and future prospects

Kiszely P  e-mail link

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More than hundred years ago Astacus astacus (L.) was a very common member of the aquatic ecosystems in Hungary. It also was of remarkable commercial importance. After the appearance of the crayfish plague this species became almost extinct in Hungary. Its slow renaissance was seriously disturbed by many unfavourable factors like intensive use of pesticides, fertilisers, canalisation, climate changes, etc. The Astacus astacus population of the Lake Balaton region also declined and our first research project in 1992 focused on rediscovering the present populations in the area. In 1994 we decided to reintroduce this ecologically important species to small rivers in this region. By 1997 the water quality of Lake Balaton had improved so we decided to reintroduce A. astacus also in this lake. Almost 1,500 specimen were introduced into Lake Balaton in that year. The work was continued in 1998. Our next aim is to establish a crayfish farm in Hungary to produce young crayfish for restocking.

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Kiszely P. (1999). Astacus astacus (L) in the Balaton Region (Hungary) - a summary of surveys between 1992-1998 and future prospects. Freshwater Crayfish 12(1):817-824. doi:



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