Overview

Comprehensive Description

At hydrothermal vents emitting fluids over 310°C around the living beds. Endemic to vents. The shell surfaces are covered with numerous filamentous bacteria. Periostracum color changes according to growth stages. Development not known but most probably with planktonic larval phase.
  • HASHIMOTO J. & T. OKUTANI (1994) Venus 53(2): 61-83.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Distribution

Izu Ogasawara Arc: Suiyo Seamount and Mokuyo Seamount.
  • HASHIMOTO J. & T. OKUTANI (1994) Venus 53(2): 61-83.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Physical Description

Morphology

Shell large, rather thin but solid, inflated, elliptical, more or less compressed. Umbones subterminal, less than one-eighth anterior of the shell length. Ligament weak. Extremely thick and large ctenidia with long demibranchs. No extreme mantle fusion, valvular siphonal membrane short. Anterior adductor muscle scar located below the umbo. Anterior part of the posterior byssus retractor muscle scar under posterior end of ligament, at about four-fifths of ligament length.
  • HASHIMOTO J. & T. OKUTANI (1994) Venus 53(2): 61-83.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Size

Shell length up to 124 mm.
  • HASHIMOTO J. & T. OKUTANI (1994) Venus 53(2): 61-83.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Type Information

Paratype for Bathymodiolus septemdierum Hashimoto & Okutani, 1994
Catalog Number: USNM 880289
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Alcohol (Ethanol)
Year Collected: 1992
Locality: Suiyo Seamount, Hydrothermal Vent Site, Japan, North Pacific Ocean
Depth (m): 1256 to 1256
Vessel: Shinkai 2000 DSR/V
  • Paratype: Hashimoto, J. & Okutani, T. 1994. Venus (Japanese Journal Of Malacology). 53(2): 72-75, fig.5.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Paratype for Bathymodiolus septemdierum Hashimoto & Okutani, 1994
Catalog Number: USNM 880290
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Alcohol (Ethanol)
Year Collected: 1992
Locality: Suiyo Seamount, Hydrothermal Vent Site, Japan, North Pacific Ocean
Depth (m): 1256 to 1256
Vessel: Shinkai 2000 DSR/V
  • Paratype: Hashimoto, J. & Okutani, T. 1994. Venus (Japanese Journal Of Malacology). 53(2): 72-75, fig.5.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Ecology

Habitat

Depth range based on 194 specimens in 1 taxon.
Water temperature and chemistry ranges based on 194 samples.

Environmental ranges
  Depth range (m): 1223 - 3600
  Temperature range (°C): 1.629 - 3.139
  Nitrate (umol/L): 38.302 - 42.519
  Salinity (PPS): 34.438 - 34.675
  Oxygen (ml/l): 1.376 - 3.369
  Phosphate (umol/l): 2.626 - 3.033
  Silicate (umol/l): 132.569 - 148.729

Graphical representation

Depth range (m): 1223 - 3600

Temperature range (°C): 1.629 - 3.139

Nitrate (umol/L): 38.302 - 42.519

Salinity (PPS): 34.438 - 34.675

Oxygen (ml/l): 1.376 - 3.369

Phosphate (umol/l): 2.626 - 3.033

Silicate (umol/l): 132.569 - 148.729
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!