Sulphur-isotopic composition of the deep-sea mussel Bathymodiolus marisindicus from currently active hydrothermal vents in the Indian Ocean

Toshiro Yamanaka, Chitoshi Mizota, Yoshihiro Fujiwara, Hitoshi Chiba, Jun Hashimoto, Toshitaka Gamo, Takamoto Okudaira

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Sulphur-isotopic composition of soft tissues from Bathymodiolus marisindicus collected from hydrothermal vents in the Indian Ocean was reported. The δ34S values of the soft tissues (+3∼+5‰ vs Cañyon Diablo troilite) were nearly identical to those from the associated hydrothermal fluid and chimney sulphides (+5 to 4-8‰), but were significantly different from that of the common seawater sulphate (+21‰), which suggested that the endosymbiotic bacteria used sulphide in the fluid as an energy source. Transmission electron microscopic observation of the endosymbionts also suggested that the symbiont is a thioautotroph. Bathymodiolus species, which depend on either sulphide or methane oxidation, or both, have a worldwide distribution. Bathymodiolus marisindicus from the Indian Ocean has a close relationship with congeners in the Pacific Ocean as evidenced by form of symbiosis. Biogeography and migration of the genus Bathymodiolus based on the relevant data are briefly discussed.

Original languageEnglish
Pages (from-to)841-848
Number of pages8
JournalJournal of the Marine Biological Association of the United Kingdom
Volume83
Issue number4
DOIs
Publication statusPublished - Aug 2003

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hydrothermal vent
Indian Ocean
sulfides
mussels
deep sea
sulfur
isotopic composition
sulfide
troilite
endosymbiont
endosymbionts
symbiont
symbiosis
hydrothermal fluid
biogeography
Pacific Ocean
symbionts
methane
sulfates
seawater

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Sulphur-isotopic composition of the deep-sea mussel Bathymodiolus marisindicus from currently active hydrothermal vents in the Indian Ocean. / Yamanaka, Toshiro; Mizota, Chitoshi; Fujiwara, Yoshihiro; Chiba, Hitoshi; Hashimoto, Jun; Gamo, Toshitaka; Okudaira, Takamoto.

In: Journal of the Marine Biological Association of the United Kingdom, Vol. 83, No. 4, 08.2003, p. 841-848.

Research output: Contribution to journalArticle

Yamanaka, Toshiro ; Mizota, Chitoshi ; Fujiwara, Yoshihiro ; Chiba, Hitoshi ; Hashimoto, Jun ; Gamo, Toshitaka ; Okudaira, Takamoto. / Sulphur-isotopic composition of the deep-sea mussel Bathymodiolus marisindicus from currently active hydrothermal vents in the Indian Ocean. In: Journal of the Marine Biological Association of the United Kingdom. 2003 ; Vol. 83, No. 4. pp. 841-848.
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