{"title":"遗迹还是新移民?法国首次记录到栉水母Gyraulus riparius (Westerlund, 1865)","authors":"Julien Ryelandt, Quentin Wackenheim, Jean-Michel Bichain","doi":"10.61733/jconch/4517","DOIUrl":null,"url":null,"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 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.","PeriodicalId":50220,"journal":{"name":"Journal of Conchology","volume":null,"pages":null},"PeriodicalIF":0.4000,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A relict or new immigrant? The first record of the planorbid Gyraulus riparius (Westerlund, 1865) in France\",\"authors\":\"Julien Ryelandt, Quentin Wackenheim, Jean-Michel Bichain\",\"doi\":\"10.61733/jconch/4517\",\"DOIUrl\":null,\"url\":null,\"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 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.\",\"PeriodicalId\":50220,\"journal\":{\"name\":\"Journal of Conchology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.4000,\"publicationDate\":\"2024-07-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Conchology\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.61733/jconch/4517\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MARINE & FRESHWATER BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Conchology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.61733/jconch/4517","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
A relict or new immigrant? The first record of the planorbid Gyraulus riparius (Westerlund, 1865) in France
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.
期刊介绍:
The Journal of Conchology is the world''s oldest continuing publication on the subject. Published twice a year, it contains scientific papers and short communications on molluscs with emphasis on promoting conservation, biogeography and taxonomy. The contents cover, typically, descriptions of new species from anywhere in the world and reports concerning the ecology, distribution and status of molluscs. Both living and fossil molluscs are dealt with.