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Magallana - Species in
Ostreidae - - Classification -
- Ostreidae
- Ostreida
- Bivalvia
- Chordata
- Animalia
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Magallana sikamea (Amemiya, 1928)
Kumamoto oyster
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS
Bivalvia | Ostreida | Ostreidae
Environment: milieu / climate zone / depth range / distribution range Ecology
Benthic; brackish. Subtropical; 37°N - 17°N, 108°E - 134°E
Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions
Northwest Pacific: from Japan to South Korea, China and Taiwan.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm Max length : 6.0 cm SHL male/unsexed; (Ref. 101471)
Studies show that in comparison to Crassostrea gigas, this species is slower in growth, and smaller size. Morphologically, its left valve is deeply cupped its shell is ridged or highly wrinkled. In its native range, mature eggs are produced in early winter, while in the US Pacific, it comes in late summer through early winter (Refs. 86666, 86667). It is also known to have a one-way gametic incompatibility barrier, which prohibits the sperm of this species to fertilize other species, i.e., Crassostrea gigas (Refs. 86666, 86668). Since 1947, this species has been imported to the US for experimental and commercial purposes (Ref. 86669). Its conservation status remains questionnable due to the lack of information on its distribution as well as the taxonomic confusion with Crassostrea gigas (Ref. 86665). This species is found in intertidal areas, particularly on hard substrates (Ref. 86665). Also occurs in a muddy flat (Ref. 106134) as well as in estuary in tidal flats (Ref. 106135). In general, suspension feeding bivalves mainly depend on phytoplankton and detritus material for nutrition (Ref. 107088).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
In its native range, mature eggs are produced in early winter, while in the US Pacific, it comes in late summer through early winter (Ref. 86666, 86667).
Main reference
References | Coordinator | Collaborators
Camara, M. D., J.P. Davis, M. Sekino, D. Hedgecock, G. Li, C.J. Langdon and S. Evans. 2008. (Ref. 86665)
IUCN Red List Status
(Ref. 130435: Version 2024-2)
CITES status (Ref. 108899)
Not Evaluated
CMS (Ref. 116361)
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: commercial
| FishSource | Sea Around Us
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Trophic Ecology
Ecology
Population dynamics
Growth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycle
Distribution
Physiology
Oxygen consumption
Human Related
Stamps, coins, misc.
Outreach
Taxonomy
References
Internet sources
BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record
Estimates based on models
Nutrients : Calcium = 149 [71, 228] mg/100g; Iron = 8.53 [1.95, 15.11] mg/100g; Protein = 9.88 [8.64, 11.12] %; Omega3 = 0.313 [0.202, 0.423] g/100g; Selenium = 61 [50, 72] μg/100g; VitaminA = 0 μg/100g; Zinc = 2.04 [0.56, 3.51] mg/100g (wet weight); based on nutrient studies.