Issue |
Knowl. Manag. Aquat. Ecosyst.
Number 422, 2021
Topical issue on Crayfish
|
|
---|---|---|
Article Number | 27 | |
Number of page(s) | 7 | |
DOI | https://doi.org/10.1051/kmae/2021026 | |
Published online | 07 July 2021 |
Short Communication
First record of the stone crayfish in the Romanian lowlands
Premier signalement de l'écrevisse des torrents dans la plaine roumaine
1
University of Oradea, Doctoral School of Biomedical Sciences, Domain: Biology, 1, Universităţii, 410087 Oradea, Romania
2
University of Oradea, Faculty of Science, Department of Biology, 1, Universităţii, 410087 Oradea, Romania
3
University of Zagreb, Faculty of Science, Department of Biology, Rooseveltov trg 6, 10000 Zagreb, Croatia
* Corresponding author: mariusioan.groza@yahoo.com
Received:
26
April
2021
Accepted:
21
June
2021
The stone crayfish is a native European freshwater species with significant population declines caused by anthropogenic pressure onto its habitats, climate change and spreading of non-indigenous invasive crayfish and their pathogens (e.g., Aphanomyces astaci). We present the first record of an Austropotamobius torrentium population in a small stream from the southern lowlands of Romania, in an area without limestone or karst, known as a typical stone crayfish habitat in this country. No additional populations were found in the neighbouring streams. The mtDNA analysis based on sequencing a short fragment of the cytochrome c oxidase subunit I (COI) gene revealed that specimens from this newly discovered population belongs to the most widespread phylogroup of A. torrentium (CSE) and share the same haplotype as the specimens found in Croatia. Unfortunately, this crayfish population has disappeared most likely because of the crayfish plague since pathogen A. astaci was isolated from moribund crayfish. Our study highlights the vulnerability of isolated relic populations in the face of outside stressors.
Résumé
L'écrevisse des torrents est une espèce d'eau douce européenne indigène dont les populations connaissent un déclin important en raison de la pression anthropique sur ses habitats, du changement climatique et de la propagation d'écrevisses invasives non indigènes et de leurs agents pathogènes (par exemple, Aphanomyces astaci). Nous présentons le premier enregistrement d'une population d'Austropotamobius torrentium dans un petit ruisseau des basses terres du sud de la Roumanie, dans une zone sans calcaire ni karst, connue comme un habitat typique de l'écrevisse des torrents dans ce pays. Aucune autre population n'a été trouvée dans les ruisseaux voisins. L'analyse de l'ADNmt basée sur le séquençage d'un court fragment du gène de la sous-unité I de la cytochrome c oxydase (COI) a révélé que les spécimens de cette population nouvellement découverte appartiennent au phylogroupe le plus répandu d'A. torrentium (CSE) et partagent le même haplotype que les spécimens trouvés en Croatie. Malheureusement, cette population d'écrevisses a disparu très probablement à cause de la peste des écrevisses depuis que l'agent pathogène A. astaci a été isolé des écrevisses moribondes. Notre étude met en évidence la vulnérabilité des populations relictuelles isolées face aux facteurs de stress extérieurs.
Key words: Austropotamobius torrentium / Aphanomyces astaci / karst
Mots clés : Austropotamobius torrentium / Aphanomyces astaci / karst
© M.-I. Groza et al., Published by EDP Sciences 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License CC-BY-ND (https://creativecommons.org/licenses/by-nd/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. If you remix, transform, or build upon the material, you may not distribute the modified material.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.