<abstract xmlns="http://www.w3.org/1999/xhtml">

<p><italic>Astacus astacus</italic> (Linnaeus, 1758) is a vulnerable species. Through comprehensive monitoring, we have determined the current spatial distribution of the populations in two streams of the Western Carpathian Massif. In the investigated part of the streams, we did not detect the presence of a source of chemical contamination with hazardous substances causing aquatic animal mortality or significant deterioration of the environmental quality. We sampled at 30 study sites and examined 223 individuals, more than a third of which showed abnormalities, physical damage, body deformation, or the presence of ectosymbionts. External abnormalities were related to the carapace and abdomen; in both sexes, the most frequent were on the claws (amputation, stunting, and mechanical damage); in males, we frequently observed amputation of antennae, carapace damage, or commissural damage; in females, we also found very low egg counts or stunted antennae, deformities of the pleopods, or telson deformities. On the bodies of crayfish, we confirmed the presence of ectosymbionts from the genus <italic>Branchiobdella</italic> as well.</p>
</abstract>

Astacus astacus (Linnaeus, 1758) is a vulnerable species. Through comprehensive monitoring, we have determined the current spatial distribution of the populations in two streams of the Western Carpathian Massif. In the investigated part of the streams, we did not detect the presence of a source of chemical contamination with hazardous substances causing aquatic animal mortality or significant deterioration of the environmental quality. We sampled at 30 study sites and examined 223 individuals, more than a third of which showed abnormalities, physical damage, body deformation, or the presence of ectosymbionts. External abnormalities were related to the carapace and abdomen; in both sexes, the most frequent were on the claws (amputation, stunting, and mechanical damage); in males, we frequently observed amputation of antennae, carapace damage, or commissural damage; in females, we also found very low egg counts or stunted antennae, deformities of the pleopods, or telson deformities. On the bodies of crayfish, we confirmed the presence of ectosymbionts from the genus Branchiobdella as well.

External Abnormalities and Body Deformities of Noble Crayfish (Malacostraca, Astacidae: <italic>Astacus astacus</italic>) of West Carpathian Massive (Slovakia): Possible Causes for this Phenomenon

Department of Ecology and Environmental Sciences, Faculty of Natural Sciences and Informatics

Constantine the Philosopher University in Nitra

Ekológia (Bratislava)

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

External Abnormalities and Body Deformities of Noble Crayfish (Malacostraca, Astacidae: ) of West Carpathian Massive (Slovakia): Possible Causes for this Phenomenon

Astacus astacus (Linnaeus, 1758) is a vulnerable species. Through comprehensive monitoring, we have determined the current spatial distribution of the...

External Abnormalities and Body Deformities of Noble Crayfish (Malacostraca, Astacidae: Astacus astacus) of West Carpathian Massive (Slovakia): Possible Causes for this Phenomenon

Published Online: Dec 27, 2022

Page range: 351 - 360

Received: Sep 04, 2022

Accepted: Oct 19, 2022

DOI: https://doi.org/10.2478/eko-2022-0036

Keywords
body injuries, deformation, crayfish, Central Europe, environment, human activity

© 2022 Zuzana Krumpálová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

External Abnormalities and Body Deformities of Noble Crayfish (Malacostraca, Astacidae: Astacus astacus) of West Carpathian Massive (Slovakia): Possible Causes for this Phenomenon

Published Online: Dec 27, 2022

Page range: 351 - 360

Received: Sep 04, 2022

Accepted: Oct 19, 2022

DOI: https://doi.org/10.2478/eko-2022-0036

Keywordsbody injuries, deformation, crayfish, Central Europe, environment, human activity

© 2022 Zuzana Krumpálová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
body injuries, deformation, crayfish, Central Europe, environment, human activity