A relict or new immigrant? The first record of the planorbid Gyraulus riparius (Westerlund, 1865) in France - Laboratoire de géographie physique : environnements quaternaires et actuels Accéder directement au contenu
Article Dans Une Revue Journal of Conchology Année : 2024

A relict or new immigrant? The first record of the planorbid Gyraulus riparius (Westerlund, 1865) in France

Résumé

A population of a ramshorn snail species new to the French malacofauna, Gyraulus riparius (Westerlund, 1865), has been discovered in the fen surrounding Lake Cerin in southern Jura, eastern France. This population is located more than 450 km south of the previously known localities in Germany, and the species’ status as indigenous to France is therefore discussed. A review of palaeontological data show that the species has been recorded in eastern France during cold periods of the Middle and Lower Pleistocene. Furthermore, Lake Cerin is a small lake of glacial origin, located at an altitude of 766 m a.s.l., with little impact from human activities and inhabited by numerous threatened and protected boreo-alpine species. We postulate that this population indicates a wider past distribution, especially in the south, although we cannot exclude the hypothesis of a more recent introduction (natural or anthropic). We propose that G. riparius should be treated as a species native to France, as defined by the International Union for the Conservation of Nature, and targeted by a conservation and knowledge programme.
Fichier principal
Vignette du fichier
Ryelandt et al. 2024 -.pdf (2.34 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04661943 , version 1 (25-07-2024)

Identifiants

Citer

Julien Ryelandt, Quentin Wackenheim, Jean-Michel Bichain. A relict or new immigrant? The first record of the planorbid Gyraulus riparius (Westerlund, 1865) in France. Journal of Conchology, 2024, 45 (2), pp.186-194. ⟨10.61733/jconch/4517⟩. ⟨hal-04661943⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More