Classification :
Eukarya - Opisthokonta - Animalia - Ctenophora - Tentaculata - Platyctenida - Lyroctenidae - Lyrocteis
Lyrocteis imperatoris Komai, 1941
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Taxonomy
Occurrence records
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Occurrence records
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[Map・Summary]
■ Record acquisition rangeWith latitude and longitude information：100%
Latitude
23.507050 ~ 34.545800
Longitude
127.776430 ~ 141.931870
Depth
143.000 ~ 467.600 m
■ Record acquisition periodWith period：100%
2005/07/20 ~ 2013/03/20
* Date last modified：2025/03/28
■ Number of record48 　
■ Dataset2 　
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[Environment data]
Video・Image
JAMSTEC E-library of Deep-sea Images　Video (43)・Image(40)
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General
Lyrocteis imperatoris is a benthic ctenophore with no swimming capability in adults. The body is flattened and composed of a saddle-shaped trunk and a pair of arm-like processes (Komai, 1941). The arm bears longitudinal parallel fringes on each surface, and a pinnate tentacle is situated at the tip of the arm (Komai, 1941). Live specimens show a wide variation in color (yellow, brown, white etc.) (Komai, 1941; Fujiwara et al., 2007). The species was first found from Sagami Bay, central Japan and later around whale carcasses deposited off Cape Nomamisaki, Kagoshima, southwestern Japan, and observed to attach to benthic substrata such as stone. The depth range is 70-230 m.
Lyrocteis imperatoris Komai, 1941 of literature
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Fujikura, K., Okutani, T. and T. Maruyama (2012) Deep-sea life —Biological observations using research submersibles: Second Edition. Tokai University Press, Kanagawa, Japan, 487 pp. (in Japanese).
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Fujiwara, Y., Kawato, M., Yamamoto, Y., Yamanaka, T., Sato-Okoshi, W., Noda, C., Tsuchida, S., Komai, T., Cubelio, S. S., Sasaki, T., Jacobsen, K., Kubokawa, K., Fujikura and 8 authors (2007) Three-year investigations into sperm whale-fall ecosystems in Japan. Marine Ecology 28: 219-232.
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Komai, T. (1941) A new remarkable sessile ctenophore. Proceedings of the Imperial Academy 17: 216-220.
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