Issue |
Knowl. Manag. Aquat. Ecosyst.
Number 417, 2016
Topical issue on Crayfish
|
|
---|---|---|
Article Number | 16 | |
Number of page(s) | 9 | |
DOI | https://doi.org/10.1051/kmae/2016003 | |
Published online | 03 May 2016 |
Research paper
The alien, parthenogenetic marbled crayfish (Decapoda: Cambaridae) is entering Kis-Balaton (Hungary), one of Europe’s most important wetland biotopes
L’écrevisse marbrée, exotique, parthénogénétique (Decapoda : Cambaridae) est arrivée dans le Kis-Balaton (Hongrie), l’une des zones humides les plus importantes d’Europe
1 Balaton Uplands National Park
Directorate, Kossuth Lajos utca 16, 8229
Csopak,
Hungary
2 Szent István University, Institute of
Aquaculture and Environmental Safety, Department of Aquaculture,
Páter Károly utca 1,
2100
Gödöllő,
Hungary
3 National Inspectorate for
Environmental Protection and Nature Conservation (Northern Transdanubia), Laboratory,
Török Ignác utca
68., 9028
Győr,
Hungary
4 Balaton Limnological Institute,
MTA Centre for Ecological Research,
Klebelsberg Kuno utca 3, 8237
Tihany,
Hungary
5 Humboldt-Universität zu Berlin,
Institut für Biologie/Vergleichende Zoologie, Philippstraße 13, 10115
Berlin,
Germany
⋆ Corresponding author:
a.lokkos@gmail.com
Received:
18
August
2015
Revised:
27
January
2016
Accepted:
28
January
2016
The marbled crayfish or Marmorkrebs, Procambarus fallax (Hagen, 1870) f. virginalis, a parthenogenetic freshwater crayfish belonging to the North American cambarids, was recorded in Hungary for the first time. Several specimens of this potentially invasive crayfish were caught at different locations in the thermal Lake Hévíz and its outflows in the western part of the country. Captured individuals covered a wide size range (5.5 to 50.5 mm carapace length) and one was carrying eggs and recently hatched offspring, which suggests that this organism has established a stable and self-sustaining population in the warm habitats of Lake Hévíz area. This finding is of great significance because these habitats belong to the catchment of the Danube River including Lake Balaton, and thus, a significant further spread of the marbled crayfish is likely to happen in Central Europe. Furthermore, the expansion of this crayfish already reached the Kis-Balaton, one of the landscape protection areas of the Balaton Uplands National Park, what could have currently yet unpredictable consequences for this unique wetland biotope.
Résumé
L’écrevisse marbrée ou Marmorkrebs, Procambarus fallax (Hagen, 1870) f. virginalis, une écrevisse parthénogénétique appartenant aux Cambaridés d’Amérique du Nord, a été rencontrée en Hongrie pour la première fois. Plusieurs spécimens de cette écrevisse potentiellement envahissante ont été capturés à différents endroits dans le lac thermal Hévíz et ses exutoires, dans la partie occidentale du pays. Les individus capturés sont d’un large éventail de tailles (de 5,5 à 50,5 mm de longueur de carapace) et l’un d’eux était porteur d’œufs et de jeunes récemment éclos, ce qui suggère que cette espèce a établi une population stable et autonome dans les habitats chauds de la région du lac Hévíz. Cette constatation est d’une grande importance parce que ces habitats appartiennent au bassin versant du Danube comprenant le lac Balaton, et donc, une propagation importante de l’écrevisse marbrée est susceptible de se produire en Europe centrale. En outre, l’expansion de cette écrevisse a déjà atteint le Kis-Balaton, l’une des zones de protection du Parc National Balaton Uplands, ce qui pourrait avoir des conséquences encore imprévisibles actuellement pour ce biotope humide unique.
Key words: non-indigenous crayfish species / pet trade / illegal release / crayfish plague / thermal lake
Mots clés : écrevisse non indigène / commerce d’animaux / introduction illégale / peste de l’écrevisse / lac thermal
© A. Lőkkös et al., published by EDP Sciences, 2016
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