Document of bibliographic reference 396800

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

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

Abstract

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 threat?ened and protected boreo-alpine species. We postulate that this population indicates a wider past distribution, espe?cially 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.

Bibliographic citation

Ryelandt, J.; Wackenheim, Q.; Bichain, J.-M. (2024). A relict or new immigrant? The first record of the planorbid Gyraulus riparius (Westerlund, 1865) in France. J. Conch., Lond. 45(2): 186-194. https://dx.doi.org/10.61733/jconch/4517

Topic

Fresh water

Is peer reviewed

true

Access rights

open access

Is accessible for free

true