Rossia palpebrosa

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Rossia palpebrosa
Rossia palpebrosa.png
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Sepiida
Family: Sepiolidae
Subfamily: Rossiinae
Genus: Rossia
Species:
R. palpebrosa
Binomial name
Rossia palpebrosa
Owen, 1834 [2]
Synonyms

Rossia palpebrosa, also known as the warty bobtail squid, is a species of bobtail squid native to the northern Atlantic Ocean.

Contents

The type locality is simply given as "Arctic Regions". The type specimen is deposited at The Natural History Museum in London, although the location given for the type specimen has not been recently confirmed. [3]

Description

R. palpebrosa is a small squid growing to approximately 45 mm (2 in) in mantle length. [4] The mantle is rounded posteriorly and not fused with the head dorsally. The head is wide, and it and mantle are covered in tubercles which are often large and widely distributed but, in juveniles and as a local variant, they are small and not easily observable. The mantle cavity is divided by a muscular septum. The fins are kidney-shaped and set obliquely. There is often a luminous organ on the ink sac. The tentacles are retractable and have straight, clearly defined clubs. The suckers on the clubs are arranged in about eight rows and are all much the same size. The arms are short but powerful and there are two rows of suckers in the mid part of each arm. [5]

Distribution

R. palpebrosa ranges from Baffin Bay in the Canadian Arctic south to South Carolina (32°N ) in the western Atlantic, and from Iceland, Spitzbergen, Scotland, Barents Sea and the Kara Sea to the North Sea and off Ireland (51°N) in the eastern Atlantic. It usually lives at depths between 75 and 550 m. [4] It is a benthic species and has a wide depth range, sometimes coming to within 10 m. of the surface in the fiords of north Norway and being recorded as deep as 1250 m. [6]

Biology

Fertilisation is internal and communal clusters of large numbers of eggs are laid. [2] Each egg measures 7 to 10 mm (0.3 to 0.4 in) in diameter and they are laid in spring and summer in the tissues of certain silicaceous sponges in the class Demospongiae. [6] The food of this squid consists mainly of small crustaceans as well as fish and smaller squid. R. palpebrosa is itself eaten by larger fish and various marine mammals. [2]

Related Research Articles

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<i>Sepiola rondeletii</i> Species of mollusc

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<i>Semirossia tenera</i> Species of mollusc

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<i>Rondeletiola minor</i> Species of mollusc

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<i>Sepiola aurantiaca</i> Species of mollusc

Sepiola aurantiaca, also known as the golden bobtail squid, is a rare species of bobtail squid native to the northeastern Atlantic Ocean. It ranges from southern Norway to the western Mediterranean Sea. S. aurantiaca occurs on the outer continental shelf and in the upper bathyal zone. The depth range of this species is possibly from 200 to 400 m.

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Rossia brachyura is a species of bobtail squid native to the tropical western Atlantic Ocean, specifically the Greater and Lesser Antilles.

Rossia bullisi, also known as the Gulf bobtail squid, is a species of bobtail squid native to the tropical western Atlantic Ocean, specifically the northern Gulf of Mexico and Straits of Florida.

Rossia megaptera, also known as the big-fin bobtail squid, is a species of bobtail squid native to the northwestern Atlantic Ocean, specifically Davis Strait, western Greenland, and off New York, in Hudson Canyon. It lives at depths from 179 to 1,536 m. It can grow up to 41 mm in mantle length.

Rossia moelleri is a species of bobtail squid native to the northern Atlantic Ocean and the Arctic Ocean, eastward to the Laptev Sea and westward to Amundsen Bay. It occurs off western and northeastern Greenland, northeastern Canada, Labrador, Spitsbergen, Jan Mayen, and in the Kara Sea. R. moelleri lives at depths from 17 to 250 m.

Rossia mollicella is a species of bobtail squid native to the western Pacific Ocean, south from Sendai Bay, Japan. It occurs on the outer continental shelf and in the upper bathyal zone. R. mollicella lives at depths from 729 to 805 m.

Rossia pacifica diegensis is a subspecies of bobtail squid native to the eastern Pacific Ocean off Santa Catalina Basin, California. It occurs at greater depths than its sister taxon R. p. pacifica.

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<i>Sepiola atlantica</i> Species of mollusc

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<i>Sepioloidea pacifica</i> Species of cuttlefish

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<i>Neorossia caroli</i> Species of mollusc

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<i>Euprymna morsei</i> Species of mollusc

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<i>Rossia</i> Genus of molluscs

Rossia is a genus of 10 species of benthic bobtail squid in the family Sepioidae found in all oceans. They live at depths greater than 50 m (164 ft) and can grow up to 9 cm in mantle length. This genus was first discovered in 1832 by Sir John Ross and his nephew James Clark Ross in the Arctic Seas, showing a resemblance to another genus under the same family, Sepiola. After returning from their expedition, Sir Richard Owen officially classified Rossia to be a new genus, naming it after Sir John and James Clark Ross.

References

  1. ↑ Barratt, I.; Allcock, L. (2012). "Rossia palpebrosa". IUCN Red List of Threatened Species . 2012: e.T162552A914284. doi: 10.2305/IUCN.UK.2012-1.RLTS.T162552A914284.en . Retrieved 20 November 2021.
  2. 1 2 3 Julian Finn (2016). "Rossia palpebrosa Owen, 1934". World Register of Marine Species. Flanders Marine Institute. Retrieved 10 February 2018.
  3. ↑ Current Classification of Recent Cephalopoda
  4. 1 2 Reid, A. & P. Jereb 2005. Family Sepiolidae. In: P. Jereb & C.F.E. Roper, eds. Cephalopods of the world. An annotated and illustrated catalogue of species known to date. Volume 1. Chambered nautiluses and sepioids (Nautilidae, Sepiidae, Sepiolidae, Sepiadariidae, Idiosepiidae and Spirulidae). FAO Species Catalogue for Fishery Purposes. No. 4, Vol. 1. Rome, FAO. pp. 153–203.
  5. ↑ Rossia palpebrosa Marine Species Identification Portal. Retrieved 2011-10-04.
  6. 1 2 Nesis, Kir N. (2001). "West-Arctic and East-Arctic distributional ranges of cephalopods" (PDF). Sarsia. 86: 1–11. doi:10.1080/00364827.2001.10420456. S2CID   86994226 . Retrieved 2011-10-03.
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