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.
| Clithon retropictum | |
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| a live Clithon retropictum | |
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| Species: | C. retropictum
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| Binomial name | |
| Clithon retropictum (von Martens, 1879)
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Clithon retropictus (incorrect gender ending) | |
Distribution edit
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 edit
Habitat edit
This nerite lives in brackish water as well as freshwater.[1]
Feeding habits edit
Clithon retropictum is herbivorous species.[4]
Life cycle edit
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 edit
Status edit
The species is considered as a second grade endangered species by the Korean ministry of environment.[7]
References edit
- ^ 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.
- ^ (in Japanese) イシマキガイ Clithon retropictus Archived 2011-10-04 at the Wayback Machine. accessed 6 January 2011.
- ^ "한국의 멸종위기종 기수갈고둥".
- ^ (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.
- ^ 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.
- ^ 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.
- ^ 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
Further reading edit
- HIRATA TETSU, UEDA HAJIME, TSUCHIYA YASUTAKA, SATO TOSHIHIKO & NISHIWAKI SABURO. 1999. Distribution of Clithon retropictus(Gastropoda; Neritidae) and environmental conditions in the rivers of Izu Peninsula. Bulletin of the Faculty of Education & Human Sciences, Yamanashi University, Volume 1, number 1, 24-30. (article in Japanese, English abstract)
External links edit
- https://web.archive.org/web/20070909103814/http://shell.kwansei.ac.jp/~shell/pic_book/data08/r000792.html photos of shells
- https://web.archive.org/web/20080907101015/http://www.gastropods.com/8/Shell_8638.html photos of shells