Crassostrea
Temporal range: 145.5–0 Ma
Eastern oyster (Crassostrea virginica)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Ostreida
Family: Ostreidae
Genus: Crassostrea
Sacco, 1897[1]
Species

See text

Synonyms
  • Ostrea (Crassostrea) Dall, 1909

Crassostrea is a genus of true oysters (family Ostreidae) containing some of the most important oysters used for food.

The genus was recent split in WoRMS, following the DNA-based phylogenies of Salvi et al. (2014 and 2017). Pacific species were moved to a new genus Magallana. C. zhanjiangensis became Talonostrea zhanjiangensis.[2] The changes are not universally welcomed by oyster researchers, as C. gigas (now M. gigas) is "one of the most researched species of marine invertebrate".[3]

Species

Extant species

Extant species include:[4]

Fossil species

Crassostrea gigantissima (Finch, 1824) from the Eocene of Texas.
Crassostrea gigantissima (Finch, 1824) right valve interior (Eocene of Texas).

Fossil species include:[5]

Genetics

The genome of Crassostrea gigas (now Magallana gigas) has been recently sequenced revealing an extensive set of genes that enable it to cope with environmental stresses.[8]

References

  1. ^ I Molluschi dei terreni terziari del Piemonte e della Liguria. F Sacco, 1897
  2. ^ Salvi, Daniele; Mariottini, Paolo (July 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. doi:10.1111/zoj.12455.
  3. ^ Bayne, B. L.; Ahrens, M.; Allen, S. K.; D'auriac, M. Anglès; Backeljau, T.; Beninger, P.; Bohn, R.; Boudry, P.; Davis, J.; Green, T.; Guo, X.; Hedgecock, D.; Ibarra, A.; Kingsley-Smith, P.; Krause, M.; Langdon, C.; Lapègue, S.; Li, C.; Manahan, D.; Mann, R.; Perez-Paralle, L.; Powell, E. N.; Rawson, P. D.; Speiser, D.; Sanchez, J.-L.; Shumway, S.; Wang, H. (December 2017). "The proposed dropping of the genus Crassostrea for all Pacific cupped oysters and its replacement by a new genus Magallana: a dissenting view". Journal of Shellfish Research. 36 (3): 545–547. doi:10.2983/035.036.0301. hdl:20.500.12010/8962.
  4. ^ a b c d e f g Taxon list for Crassostrea. World Register of Marine Species, accessed on 9 August 2017.
  5. ^ "†Crassostrea Sacco 1897". Paleobiology Database. Fossilworks. Retrieved 17 December 2021.
  6. ^ irmng
  7. ^ J. Haffty, R. G. Schmidt, L. B. Riley, W. D. Goss. Rocks and Mineral Resources of the Wolf Creek Area, Lewis and Clark and Cascade Counties, Montana: A Descriptive Report on an Area in the Disturbed Belt Along the Eastern Front of the Northern Rocky Mountains in Western Montana, Issues 1441-1446
  8. ^ Zhang, G.; Fang, X.; Guo, X.; Li, L.; Luo, R.; Xu, F.; Yang, P.; Zhang, L.; Wang, X.; Qi, H.; Xiong, Z.; Que, H.; Xie, Y.; Holland, P. W. H.; Paps, J.; Zhu, Y.; Wu, F.; Chen, Y.; Wang, J.; Peng, C.; Meng, J.; Yang, L.; Liu, J.; Wen, B.; Zhang, N.; Huang, Z.; Zhu, Q.; Feng, Y.; Mount, A.; Hedgecock, D. (2012). "The oyster genome reveals stress adaptation and complexity of shell formation". Nature. 490 (7418): 49–54. Bibcode:2012Natur.490...49Z. doi:10.1038/nature11413. hdl:10722/251007. PMID 22992520.
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