Magallana sikamea (Amemiya, 1928)

Kumamoto oyster

Taxonomy & Nomenclature

Synonyms: Ostrea gigas var. sikamea Amemiya, 1928; Crassostrea sikamea (Amemiya, 1928)

Conservation Status

Rediscovered in the Wild in: 1996 [by implication] (Hedgecock et al., 1999)

Was considered possibly Extinct in the Wild by (Banks et al., 1994 fide Carlton et al., 1999).

Distribution & Habitat

China & Japan

First reported from Chinese waters by (Wang et al., 2013).

Biology & Ecology

Hypodigm

Media

References

Original scientific description:

Amemiya, I. (1928). Ecological studies of Japanese oysters with special reference to the salinity of their habitats. J. Coll. Agric. Imp. Univ. Tokyo 9: 333-382.

Other references:

Banks, M. A., McGoldrick, D. J., Borgeson, W. and Hedgecock, D. (1994). Gametic incompatibility and genetic divergence of Pacific and Kumamoto oysters, Crassostrea gigas and C. sikamea. Mar. Biol. 121: 127-135.

Carlton, James T., Geller, J. B., Reaka-Kudla, M. L. and Norse, E. A. (1999). Historical extinctions in the sea. Annual Review of Ecology and Systematics 30: 525-538.

Flores-Higuera, Francisco Antonio. (2020). Efecto de la acidificación oceánica simulada en el desarrollo inicial y en la modulación de la comunidad bacteriana de Crassostrea sikamea (Amemiya, 1928) y Crassostrea gigas (Thunberth, 1793). PhD thesis, Universidad Autónoma De Sinaloa.

Hedgecock, D., Li, G., Banks, M. A. and Kain, Z. (1999). Occurrence of the Kumamoto oyster Crassostrea sikamea in the Ariake Sea, Japan. Mar. Biol. 133: 65-68.

MolluscaBase eds. (2025). MolluscaBase. Magallana sikamea (Amemiya, 1928). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=836041 on 2025-04-09

Salvi D. and Mariottini P. (2017 [nomenclatural availability: 2016]). Molecular taxonomy in 2D: a novel ITS2 rRNA sequence-structure approach guides the description of the oysters' subfamily Saccostreinae and the genus Magallana (Bivalvia: Ostreidae). Zoological Journal of the Linnean Society 179(2): 263-276. https://doi.org/10.1111/zoj.12455

Wang, Haiyan et al. (2013). Occurrence and Distribution of Crassostrea sikamea (Amemiya 1928) in China. Journal of Shellfish Research 32(2): 439-446. [Abstract]

https://extinctanimals.proboards.com/thread/23854/crassostrea-sikamea

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