Opisthoteuthis bruuni

Opisthoteuthis bruuni is a species of finned cirrate octopus found in waters near Antofagasta, Chile.[1] Their tissue is almost jelly-like, and they have short, round bodies.[3]

Opisthoteuthis bruuni
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Octopoda
Family: Opisthoteuthidae
Genus: Opisthoteuthis
Species:
O. bruuni
Binomial name
Opisthoteuthis bruuni
Voss, 1982[2]
Synonyms
  • Grimpoteuthis bruuni[2]

The species is only known from 16 young specimens found in the same location. They were smaller than other known opisthoteuthids, reaching a maximum of 29 mm (1.1 in) mantle length. Even at this small, immature stage, the octopuses displayed sexual dimorphism (sex differences). The males had some enlarged suckers; three enormous suckers on each arm near the mouth were the most prominent. This sort of sexual dimorphism is also found in other opisthoteuthids.[4]

The octopuses were found in temperate waters from 250–360 m (820–1,180 ft).[5] They aren't of interest to commercial fisheries.[6]

O. bruuni is potentially a pelagic species, meaning it might live in the open ocean. However, very few cirrate octopuses live in the open ocean, if any. Most live on and above the seafloor in the benthic zone.[3]

The species was originally placed in the genus Grimpoteuthis; however, it was placed in Opisthoteuthis after some re-evaluation. The classification of cirrate octopuses is regularly revised as scientists learn more about these deep-sea octopuses. Recent genetic and molecular testing, for example, confirmed O. bruuni as a member of the family Opisthoteuthidae.[7]

The octopus was named for Anton Bruun, a Danish ichthyologist.[3]

References
  1. Lyons, G.; Allcock, L. (2014). "Opisthoteuthis bruuni". IUCN Red List of Threatened Species. doi:10.2305/IUCN.UK.2014-3.RLTS.T163074A969042.en.
  2. "Opisthoteuthis bruuni (Voss, 1982)". World Register of Marine Species. Flanders Marine Institute.
  3. Voss, Gilbert L. (April 1982). "Grimpoteuthis Bruuni, A New Species of Finned Octopod (Octopoda: Cirrata) from the Southeastern Pacific". Bulletin of Marine Science. University of Miami - Rosenstiel School of Marine and Atmospheric Science. 32 (2): 426-433.
  4. Young, Richard E.; Vecchione, Michael (May 2003). "Opisthoteuthis bruuni". Tree of Life Web Project. Tree of Life Project.
  5. "Opisthoteuthis bruuni". SeaLifeBase.
  6. Jereb, Patrizia; Roper, Clyde F.E.; Norman, Mark D.; Finn, Julian K. (2016). Cephalopods of the World: An Annotated and Illustrated Catalogue of Cephalopod Species Known to Date (PDF). Rome, Italy: Food and Agriculture Organization of the United Nations. p. 254. ISBN 978-92-5-107989-8.
  7. Christian Marcelo Ibáñez; Cecilia Pardo-Gandarillas; Roger Villanueva (November 12, 2018). "The cirrate octopod Opisthoteuthis bruuni (Cephalopoda: Opisthoteuthidae) from SE Pacific and notes about cirrates phylogeny". Cephalopod International Advisory Council Conference. St. Petersburg, Florida, USA: Cephalopod International Advisory Council.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.