Omphiscola glabra: Difference between revisions
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Revision as of 22:02, 5 May 2017
Omphiscola glabra | |
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A live individual of Omphiscola glabra on a paper grid, scale bar 1 cm | |
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Species: | O. glabra
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Binomial name | |
Omphiscola glabra | |
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Omphiscola glabra is a species of small to medium-size, air-breathing, freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae.[2]
Omphiscola glabra is the type species of the genus Omphiscola.[3]
Distribution
This European snail can be found from southern Scandinavia (61° N) to southern Spain.[4]
- endangered in Germany. Critically endangered in Western Germany (Rheinland-Pfalz, Saarland, Nordrhein-Westfalen, Hessen). Extinct in Bavaria.[4]
- Netherlands
- one site in the south east of Ireland was found in 2009, but it is listed as extinct on the local Red List (2009).[5]
- vulnerable in Great Britain[4]
The distribution of Omphiscola glabra is very scattered and rare.[4] It is seriously threatened, and has become locally extinct in many places.[4] It is threatened by continuing habitat destruction because of drainage and intensive farming.[4] Acriculturally induced eutrophication is also a threat. Omphiscola glabra has disappeared widely from urbanized areas such as London.[4]
Shell description
The shell is strongly cylindrical, horny, often with a brownish or blackish surface, the apex is blunt, 7-8 moderately convex whorls, with last whorl being twice as high as the narrow aperture, and with aperture often with white lip.[4]
The height of the shell is 9–12 mm,[4] up to 15 mm[6] or up to 20 mm.[4] The width of the shell is 3–4 mm,[4] up to 5.5 mm.[6]
Habitat
This snail lives in places such as swampy meadows and ditches.[7]
Omphiscola glabra is said to occur in small areas of standing water that have a lot of vegetation such as swamps, and also in standing forest waters with leaf litter, often in water with organic iron contents and low calcium contents.[4][clarification needed]
In Central France, the populations of Omphiscola glabra are currently declining because its habitat is threatened by modern agricultural practices.[8]
In Britain however, this species occurs in small standing waters that are low in nutrients, with poor aquatic flora, often in waters drying out periodically.[4] They usually do not occur in habitats with high molluscan diversity, and usually in habitats on uncultivated land.[4] They are calciphile and have a pH tolerance of 5.4-8.8.[4][clarification needed]
Reproduction begins in May.[4] Juveniles hatch after 15–25 days.[4] Omphiscola glabra has two generations per year.[4]
Parasites
Omphiscola glabra can serve as an intermediate host for several digenean trematodes. In France, Omphiscola glabra is naturally infected with Fasciola hepatica,[9] Calicophoron daubneyi,[10] and Haplometra cylindracea.;[11] in all, seven digenean species parasitize O. glabra in the Brenne Regional Natural Park, central France.[12] Moreover, a report suggests that the species is also susceptible to Fascioloides magna infection.[13]
References
This article incorporates public domain text from the reference.[4]
- ^ Müller O. F. (1774). Vermivm terrestrium et fluviatilium, seu animalium infusoriorum, helminthicorum, et testaceorum, non marinorum, succincta historia. Volumen alterum. pp. I-XXXVI [= 1-36], 1-214, [1-10]. Havniae & Lipsiae. (Heineck & Faber).
- ^ Glöer P. (2002). Überfamilie Lymnaeoidea Rafinesque 1815. Familie Lymnaeidae Lamarck 1812. In: Glöer P. (ed.) Die Süßwassergastropoden Nord-und Mitteleuropas. Bestimmungschlüssel, Lebensweise, Verbreitung. Die Tierwelt Deutschlands 73. Conchbooks, Hackenheim, pp. 200–232.
- ^ "Species in genus Omphiscola". AnimalBase, accessed 31 July 2010.
- ^ a b c d e f g h i j k l m n o p q r s "Species summary for Omphiscola glabra". AnimalBase. Last modified 24-02-2009, accessed 31 July 2010.
- ^ Anderson R. (2009). "Value of species datasets as baselines (non-marine Mollusca)". accessed 31 July 2010.
- ^ a b Template:Pl icon Jackiewicz M. (2000). Blotniarky Europy (Gastropoda: Pulmonata: Lymnaeidae). Wydawnictwo Kontekst, Poznań. 115 pp.
- ^ Rondelaud, D.; Vignoles, P.; Dreyfuss, G. (2009). "First field observations on the aestivation of Omphiscola glabra (Gastropoda, Lymnaeida) uninfected or infected with Fasciola hepatica in central France". Annales de Limnologie - International Journal of Limnology. 39 (2): 129–133. doi:10.1051/limn/2003010. ISSN 0003-4088.
- ^ Dreyfuss, Gilles; Vignoles, Philippe; Rondelaud, Daniel (2016). "Current decline in the number and size of Galba truncatula and Omphiscola glabra populations, intermediate hosts of Fasciola hepatica, on the acidic soils of Central France". Parasite. 23: 46. doi:10.1051/parasite/2016055. PMC 5086825. PMID 27774956.
- ^ Dreyfuss, G.; Vignoles, P.; Rondelaud, D. (2003). "Natural infections of Omphiscola glabra (Lymnaeidae) with Fasciola hepatica in central France". Parasitology Research. 91 (6): 458–461. doi:10.1007/s00436-003-0892-8. ISSN 0932-0113.
- ^ Abrous, M.; Rondelaud, D.; Dreyfuss, G.; Kabaret, J. (1999). "Infection of Lymnaea truncatula and Lymnaea glabra by Fasciola hepatica and Paramphistomum daubneyi in farms of central France". Vet. Res. 30 (1): 113–118. PMID 10081118.
- ^ Goumghar, M. D.; Abrous, M.; Ferdonnet, D.; Dreyfuss, G.; Rondelaud, D. (2000). "Prevalence of Haplometra cylindracea infection in three species of Lymnaea snails in central France". Parasitol. Res. 86 (4): 337–339. doi:10.1007/s004360050054. PMID 10780746.
- ^ Rondelaud, Daniel; Vignoles, Philippe; Dreyfuss, Gilles (2015). "Larval trematode infections in Lymnaea glabra populations living in the Brenne Regional Natural Park, central France". Parasite. 22: 38. doi:10.1051/parasite/2015038. ISSN 1776-1042. PMC 4686325. PMID 26692260.
- ^ Rondelaud, D.; Novobilský, A.; Vignoles, P.; Treuil, P.; Koudela, B.; Dreyfuss, G. (2006). "First studies on the susceptibility of Omphiscola glabra (Gastropoda: Lymnaeidae) from central France to Fascioloides magna". Parasitol. Res. 98 (4): 299–303. doi:10.1007/s00436-005-0067-x. PMID 16362339.
External links
- Omphiscola glabra at Animalbase taxonomy,short description, distribution, biology,status (threats), images