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: ''For the Asian green mussel, see Perna viridis.'' ''Musculista senhousia'', commonly known as the Asian date mussel, Asian mussel or bag mussel, is a small saltwater mussel, a marine bivalve mollusk species in the family Mytilidae, the mussels. Other common names for this species include: the Japanese mussel, Senhouse's mussel, the green mussel (a name also applied to ''Perna viridis''), and the green bagmussel. This mussel is native to the Pacific Ocean from Siberia to Singapore, but it has also been accidentally introduced and become an invasive species in numerous other areas worldwide. It can live in the intertidal or shallow subtidal zones. In California the species has been recorded in densities of up to 150,000 individuals per square meter. It grows quickly and lives only about 2 years. It prefers soft substrates and surrounds its shell in a dense mass of byssus. One of several negative impacts of this invasive species is that it has a detrimental effect on eelgrass. ==Description== This species is differentiated from other mussels by its relatively small size and inflated shape, as well as by the greenish colour of its outer periostracal layer. The shell has radiating reddish lines on its posterior surfaces, small internal teeth on the dorsal edge posterior to the ligament, and small ribs anterior to the umbones. It can grow up to 30 mm in length. 〔Edgar, Graham J. ''Australian Marine Life: The Plants and Animals of Temperate Waters.'' Victoria: Reed, 1997.〕〔Slack-Smith, S.M., A. Brearley. "Musculista senhousia (Benson, 1842); a mussel recently introduced into the Swan River estuary, Western Australia." ''Records of the Western Australian Museum.'' 13.2 (1987): 225-230.〕 It is also known for its relatively fast growth and has a maximum lifetime of about two years.〔Crooks, Jeffrey A. "Predators of the invasive mussel Musculista senhousia (Mollusca: Mytilidae)." ''Pacific Science.'' 56.1 (2002): 49-57.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Musculista senhousia」の詳細全文を読む スポンサード リンク
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