Clithon retropictum(Korean: 기수갈고둥,Japanese: 石蜑螺) is a species of freshwater and brackish water snail with an operculum, a nerite. It is an aquatic gastropod mollusk in the family Neritidae, the nerites.
Distribution
This species occurs in Japan:[1] Honshu, Kyushu and Shikoku.[2]Its habitat is also located in South Korea near Jeju [3] and Taiwan.
Description
Clithon retropictum shells
Habitat
This nerite lives in brackish water as well as freshwater.[1]
Feeding habits
Clithon retropictum is herbivorous species.[4]
Life cycle
Clithon retropictum is oviparous.[1] Juveniles hatch from eggs in September.[1] The lifespan of Clithon retropictum is up to 12 years and it belongs among the most long-lived of freshwater gastropods.[5]
Parasites
Status
The species is considered as a second grade endangered species by the Korean ministry of environment.[7]
References
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^ a b c d FURUJO Yuki & TOMIYAMA Kiyonori. Distribution and Microhabitat of Coexisting Two Freshwater Snail Species, Semisulcospira libertina (Gould) (Prosobranchia; Pleuroceridae) and Clithon retropictus (Martens) (Prosobranchia: Neritidae). The Japanese journal of malacology. Venus, Vol. 59, No. 3(20000930), pp. 245-260.
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^ (in Japanese) イシマキガイ Clithon retropictus Archived 2011-10-04 at the Wayback Machine. accessed 6 January 2011.
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^ "한국의 멸종위기종 기수갈고둥".
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^ (in Japanese) Ohara T. & Tomiiyama K. (2000). "Niche segregation of coexisting two freshwater snail species, Semisulcospira libertina (Gould) (Prosobranchia: Pleuroceridae) and Clithon retropictus (Martens) (Prosobranchia: Neritidae)". Venus 59(2): 135–147. CiNii.
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^ Shigemiya, Y.; Kato, M. (2001). "Age distribution, growth, and lifetime copulation frequency of a freshwater snail, Clithon retropictus (Neritidae)". Population Ecology. 43 (2): 133. doi:10.1007/PL00012024.
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^ Kumazawa, N. H.; Kato, E.; Takaba, T.; Yokota, T. (1988). "Survival of Vibrio parahaemolyticus in two gastropod molluscs, Clithon retropictus and Nerita albicilla". Nihon Juigaku Zasshi. The Japanese Journal of Veterinary Science. 50 (4): 918–924. doi:10.1292/jvms1939.50.918. PMID 3172602.
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^ The occurrence of Clithon retropictus (v. Martens, 1879) (Gastropoda: Neritidae) in an unusual habitat, northern Jeju Island, Republic of Korea Ronald G. Noseworthy, Hee-Jung Lee & Kwang-Sik Choi Ocean Science Journal volume 48, pages259–262
