Helix ceratina, the Corsican snail,[1] is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helicidae, the typical snails.[3]
| Helix ceratina | |
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| Shell of Helix ceratina (specimen at MNHN, Paris) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Order: | Stylommatophora |
| Superfamily: | Helicoidea |
| Family: | Helicidae |
| Subfamily: | Helicinae |
| Tribe: | Helicini |
| Genus: | Helix |
| Species: | H. ceratina
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| Binomial name | |
| Helix ceratina Shuttleworth, 1843)[2]
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| Synonyms | |
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This species is endemic to Corsica. The only known extant population lives at Campo dell’Oro near the Ajaccio airport. The inhabited area was estimated at 0.34 km².[4]
Although still sometimes classified in a monotypic genus Tyrrhenaria[4], the species is a member of the genus Helix, related to species such as Helix ligata and Helix melanostoma.[5][6]
It inhabits biotopes on granitic sands near the shore, and its presence is tightly linked to Genista salzmannii ssp. salzmannii.[7] During dry and hot periods, the snails dig up to 60 cm into the soil and form a convex, calcareous epiphragm.[7]
Helix ceratina feeds on fresh leaves in the spring, but the diet changes to decaying plant matter in the autumn. Genista salzmannii is the most important part of the diet (found in 80% of faeces); Matthiola sinuata, Jasione montana and grasses are also eaten.[8]
References edit
- ^ a b Falkner, M.; Falkner, G.; von Proschwitz, T. & Charrier, M. (2011). "Helix ceratina". IUCN Red List of Threatened Species. 2011: e.T9843A13020602. doi:10.2305/IUCN.UK.2011-2.RLTS.T9843A13020602.en. Retrieved 16 June 2023.
- ^ (in German) Shuttleworth R. J. 1843. Über die Land- und Süsswasser-Mollusken von Corsica. Mittheilungen der Naturforschenden Gesellschaft in Bern 1843 (2/3): 9-21.
- ^ MolluscaBase eds. (2022). MolluscaBase. Helix ceratina Shuttleworth, 1843. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1549519 on 2022-12-09
- ^ a b Camus, Louise; Poli, Pedro; Delaugerre, Michel-Jean; Dréano, Stéphane; Cucherat, Xavier; Natali, Christine; Guiller, Annie (2023-10-01). "Unexpected and spatially structured genetic diversity of the relict population of the endangered corsican land snail Tyrrhenaria ceratina". Conservation Genetics. 24 (5): 661–672. doi:10.1007/s10592-023-01535-0. ISSN 1572-9737.
- ^ Fiorentino, V.; Manganelli, G.; Giusti, F.; Ketmaier, V. (2016). "Recent expansion and relic survival: Phylogeography of the land snail genus Helix (Mollusca, Gastropoda) from south to north Europe". Molecular Phylogenetics and Evolution. 98: 358–372. doi:10.1016/j.ympev.2016.02.017.
- ^ Korábek, Ondřej; Kosová, Tereza; Dolejš, Petr; Petrusek, Adam; Neubert, Eike; Juřičková, Lucie (2021-11-29). "Geographic isolation and human-assisted dispersal in land snails: a Mediterranean story of Helix borealis and its relatives (Gastropoda: Stylommatophora: Helicidae)". Zoological Journal of the Linnean Society. 193 (4): 1310–1335. doi:10.1093/zoolinnean/zlaa186. ISSN 0024-4082.
- ^ a b Lecoq, M. (1851). "Note sur les moeurs de l'Helix tristis (Pfeiffer)". Journal de conchyliologie. 2: 146–151.
- ^ Charrier, Maryvonne; Chevalier, Laure; Paradis, Guilhan; Recorbet, Bernard (2005). "Field observations on spatial distribution and diet in the terrestrial snail Tyrrhenaria ceratina, an endemic species from Corsica". Notiziario S.I.M., Supplemento al Bollettino Malacologico. 23 (5–8): 8.
External links edit
- Animal Base info
- Pfeiffer, L. (1845). Description of twenty-two new species of Land-Shells, belonging to the collection of Mr. H. Cuming. Proceedings of the Zoological Society of London. 13 (147): 63–68. London
- Korábek, O.; Kosová, T.; Dolejš, P.; Petrusek, A.; Neubert, E.; Juřičková, L. (2021). Geographic isolation and human-assisted dispersal in land snails: a Mediterranean story of Helix borealis and its relatives (Gastropoda: Stylommatophora: Helicidae). Zoological Journal of the Linnean Society
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