Meretrix lamarckii

Korean hard clam
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Venerida
Family: Veneridae
Genus: Meretrix
Species:
M. lamarckii
Binomial name
Meretrix lamarckii
Deshayes 1853
Synonyms
Synonymy
  • Cytherea fusca Koch in Philippi 1845
  • Cytheraea morphina L.
  • Meretrix compressa Römer, 1866
  • Meretrix meretrix var. reevei Fischer-Piette & P. H. Fischer, 1941

Meretrix lamarckii, also called Korean clam or Korean hard clam, is a species of saltwater bivalve in the family Veneridae.[1] It is the second species of venerid clam where doubly uniparental inheritance (DUI) has been identified.[2]

Genomics

A chromosome-level genome assembly of Meretrix lamarckii was published in 2026, providing the first reference genome for the species. The genome is approximately 890.5 Mb in size and comprises 19 pseudo-chromosomes. The assembly has a BUSCO completeness of 99.5% and contains 33,346 predicted protein-coding genes.[3]

Ecology

It is a medium-sized clam which lives in sandy sediments from the subtidal zone to a depth of 20 meters.[4] In the waters off Hyūga, Miyazaki, it spawns between late July and early September.[5]

Relationship to humans

M. lamarckii is edible and economically important in China; commercial fishing has greatly disrupted the habitat where it lives.[4][6] It is a filter feeder which primarily feeds on phytoplankton.[7] Its shell is used to make the white stones used in Go.[5]

References

  1. ↑ Meretrix lamarckii at GBIF
  2. ↑ Bettinazzi, Stefano; Plazzi, Federico; Passamonti, Marco (2016-04-15). "The Complete Female- and Male-Transmitted Mitochondrial Genome of Meretrix lamarckii". PLOS ONE. 11 (4) e0153631. doi:10.1371/journal.pone.0153631. ISSN 1932-6203. PMC 4833323. PMID 27083010.
  3. ↑ Law, Sean Tsz Sum; Nong, Wenyan; Au, Ming Fung Franco; Cheung, Leni Hiu Tung; Shum, Cheryl Wood Yee; Lee, Shing Yip; Cheung, Siu Gin; Hui, Jerome Ho Lam (2026-03-27). "Chromosome-level genomes of hard clams Meretrix lamarckii (Deshayes, 1853) and Meretrix meretrix (Linnaeus, 1758)". Scientific Data. 13 (1) 760. doi:10.1038/s41597-026-07119-0. PMC 13187332. PMID 41896227.
  4. 1 2 Feng et al. 2020, p. 693.
  5. 1 2 Shigeno 1955, p. 218.
  6. ↑ Shao YQ, Zhang JM, Fang J et al (2017). "Reproductive cycle and early development of Meretrix lamarkii (Veneroida: Veneridae) under artificial conditions" (in Chinese with English abstract). J Fish Sci China 24:82–90
  7. ↑ Itoi, Shiro; Uchida, Junya; Takanashi, Shihori; Narita, Tomoyo; Abe, Koko; Naya, Satomi; Sugita, Haruo (2014). "The clam Meretrix lamarckii (Bivalvia: Veneridae) is a rich repository of marine lactic acid bacterial strains". Annals of Microbiology. 64 (3): 1267–1274. doi:10.1007/s13213-013-0771-1. ISSN 1590-4261.

Further reading

  • Feng, Jiantong; Fu, Zeqin; Guo, Yahong; Li, Jiji; Guo, Baoying; Lü, Zhenming; Ye, Yingying (2020). "Strong genetic differentiation of the clam Meretrix lamarckii in the China Sea revealed by mitochondrial DNA marker". Molecular Biology Reports. 47 (1): 693–702. doi:10.1007/s11033-019-05177-9. ISSN 0301-4851. PMID 31701474. S2CID 207941192.