Opisthoteuthis

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Opisthoteuthis
Dumbo Octopus (49203817176).jpg
Opisthoteuthis agassizii in the Gulf of Mexico in 2019
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Octopoda
Family: Opisthoteuthidae
Genus: Opisthoteuthis
Verrill, 1883 [1]
Type species
Opisthoteuthis agassizii
Verrill, 1883
Synonyms

Cirroteuthopsis Grimpe, 1920

Opisthoteuthis is a genus of cirrate octopuses, sometimes known as flapjack octopuses, which are found in all the world's oceans. [2]

Contents

Behavior

Like other cirrates, octopuses in Opisthoteuthis are generally small, and many dwell in the deep sea. They have cirri on their arms, internal shells to support their bodies, and muscular fins for steering. [3] Like octopuses of Grimpoteuthis, opisthoteuthids have been seen resting or crawling on the seafloor. [4]

Species

These 24 species have been placed in Opisthoteuthis: [5]

Scientific nameAuthority [a] IUCN Red List StatusPicture
Opisthoteuthis agassizii Verrill, 1883DD IUCN Dumbo Octopus (49203817176).jpg
Opisthoteuthis albatrossi (Sasaki, 1920)DD IUCN
Opisthoteuthis borealis Collins, 2005DD IUCN
Opisthoteuthis bruuni (Voss, 1982)DD IUCN
Opisthoteuthis californiana Berry, 1949DD IUCN Opisthoteuthis californiana.jpg
Opisthoteuthis calypso Villanueva, Collins, Sánchez & Voss, 2002VU IUCN
Opisthoteuthis chathamensis O'Shea, 1999CR IUCN
Opisthoteuthis depressa Ijima & Ikeda, 1895DD IUCN Opisthoteuthis depressa - National Museum of Nature and Science, Tokyo - DSC07566.JPG
Opisthoteuthis dongshaensis C. C. Lu, 2010DD IUCN
Opisthoteuthis extensa Thiele, 1915DD IUCN Opisthoteuthis extensa2.jpg
Opisthoteuthis grimaldii (Joubin, 1903)DD IUCN Resultats des campagnes scientifiques accomplies sur son yacht (CEPHALOPODES (III) PL. II) (6197961998).jpg
Opisthoteuthis hardyi Villanueva, Collins, Sánchez & Voss, 2002DD IUCN
Opisthoteuthis japonica Taki, 1962DD IUCN
Opisthoteuthis kerberos Verhoeff, 2024
Opisthoteuthis massyae (Grimpe, 1920)VU IUCN
Opisthoteuthis medusoides Thiele, 1915DD IUCN OpisthoMedusoides.jpg
Opisthoteuthis mero O'Shea, 1999EN IUCN
Opisthoteuthis persephone Berry, 1918DD IUCN
Opisthoteuthis philipii Oommen, 1976DD IUCN
Opisthoteuthis pluto Berry, 1918DD IUCN
Opisthoteuthis robsoni O'Shea, 1999DD IUCN

Note:

  1. A binomial authority in parentheses indicates that the species was originally described in a genus other than Opisthoteuthis.

Related Research Articles

<i>Grimpoteuthis</i> Genus of cephalopods known as the dumbo octopuses

Grimpoteuthis is a genus of pelagic cirrate (finned) octopods known as the dumbo octopuses. The name "dumbo" originates from their resemblance to the title character of Disney's 1941 film Dumbo, having two prominent ear-like fins which extend from the mantle above each eye. There are 17 species recognized in the genus.

<span class="mw-page-title-main">Umbrella octopus</span> Family of molluscs

Umbrella octopuses are a group of pelagic octopuses. Umbrella octopuses are characterized by a web of skin between the arms, causing them to somewhat resemble an opened umbrella when the arms are spread.

<i>Opisthoteuthis californiana</i> Species of cephalopod known as the flapjack octopus

Opisthoteuthis californiana, also known as the flapjack octopus, or flapjack devilfish is a species of umbrella octopus.

Cryptoteuthis brevibracchiata, the short-arm flapjack octopod, is a deepwater species of octopod. It is the only species in the monotypic genus Cryptoteuthis one of the cirrate octopuses of the family Grimpoteuthidae, the umbrella octopuses. It is known from a single specimen which was collected in the northeastern Atlantic Ocean. It has characteristics which are shared with two other genera, Opisthoteuthis and Grimpoteuthis, but is sufficiently distinctive from either of these to warrant the erection of a new genus.

Opisthoteuthis calypso or calypso flapjack octopus is a species of genus Opisthoteuthis, which are known as the cirrate octopuses. Octopuses in this genus are known as the flapjack octopuses and can be found in a variety of oceans across the world.

<i>Opisthoteuthis agassizii</i> Species of octopus

Opisthoteuthis agassizii is a lesser-known, deep-sea octopus first described in 1883 by Addison E. Verrill.

Opisthoteuthis albatrossi is a cirrate octopus originally found off Kinkasan in Japan. This species was described from only four specimens. It is similar to Opisthoteuthis californiana; the two may be the same species. It is also similar to Opisthoteuthis japonica.

Opisthoteuthis borealis is a lesser-known species of octopus found near Greenland and Iceland, especially in the Davis Strait. The species was described from 9 specimens, and is one of the most recent Opisthoteuthis species described. Not much is known about it besides its anatomy and habitat.

Opisthoteuthis bruuni is a species of finned cirrate octopus found along the western coast of South America. Their tissue is almost jelly-like, and they have short, round bodies.

<i>Opisthoteuthis depressa</i> Species of octopus

Opisthoteuthis depressa, also known as the Japanese flapjack octopus, is an octopus found in waters near Japan.

Opisthoteuthis dongshaensis is a species of octopus located in the South China Sea.

<i>Opisthoteuthis extensa</i> Species of octopus

Opisthoteuthis extensa is a species of octopus found off the west coast of Sumatra, an Indonesian island. It lives at a recorded depth of 768 m (2,520 ft). O. extensa lives in a benthic habitat, like many other cirrate octopuses. It occupies a deep part of the ocean where little sunlight penetrates.

<i>Opisthoteuthis grimaldii</i> Species of octopus

Opisthoteuthis grimaldii is an octopus found near the Azores.

Opisthoteuthis hardyi is a lesser-known octopus species. It was described in 2002 from a male caught off the Shag Rocks, which are far south in the Atlantic Ocean near the Falkland Islands.

Opisthoteuthis massyae is an octopus living in the eastern Atlantic Ocean.

<i>Opisthoteuthis medusoides</i> Species of mollusc

Opisthoteuthis medusoides is a cirrate octopus living off the coast of Tanzania near Dar es Salaam. However, its actual range may be more extensive.

Opisthoteuthis (Exsuperoteuthis) persephone is a cirrate octopus found off southern Australia. The species was described by S. Stillman Berry from eight specimens captured by the F.I.S. Endeavour in the early 1910s. In describing O. persephone, Berry called it an "exceedingly interesting octopod". The species has recently been redescribed and allocated as the type of genus Exsuperoteuthis.

Opisthoteuthis philipii is an octopus of the Indian Ocean. It lives off the coast of Kerala, India. Known specimens were found between 275–365 m (902–1,198 ft) deep in the Arabian Sea near Alappuzha.

Opisthoteuthis pluto is a deep-sea cirrate octopus found off southern Australia in the bathyal zone. The species was described by S. Stillman Berry in 1918, and has recently been re-described. The species is named for the Greek and Roman god of the Underworld.

Opisthoteuthis robsoni, also known as the deep-water umbrella octopus, is a deep-sea octopus living off New Zealand on the Chatham Rise. It has been found from 1,178–1,723 m (3,865–5,653 ft) below the surface. Not much is known about the octopus' habitat or life cycle, as only four specimens have been found. It occupies the benthic zone, or the seafloor and the water directly above it. O. robsoni eats large amphipods.

References

  1. Philippe Bouchet (2018). "Opisthoteuthis Verrill, 1883". World Register of Marine Species. Flanders Marine Institute. Retrieved 7 February 2018.
  2. Patrizia Jereb; Clyde F.E. Roper; Mark D. Norman; Julian K. Finn, eds. (2016). Cephalopds of the World An Annotated and illustrated catalogue of Cephalopods species known to date Volume 3 Octopods and Vampire Squids (PDF). Food and Agriculture Organisation of the United Nations, Rome. ISBN   9789251079898.
  3. Mangold, Katharina M.; Vecchione, Michael; Young, Richard E. (2016). "Cirrata". Tree of Life Web Project.
  4. Gibson, R. N.; Atkinson, R. J. A.; Gordon, J. D. M. (2006). Oceanography and Marine Biology: An Annual Review, Volume 44. CRC Press. p. 316. ISBN   9781420006391.
  5. "WoRMS - World Register of Marine Species - Opisthoteuthis A. E. Verrill, 1883". www.marinespecies.org. Retrieved 2024-12-07.