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Description ( الإنجليزية )

المقدمة من NMNH Antarctic Invertebrates

BATHYTEUTHIS, Hoyle.

Bathyteuthis, Hoyle, Narr. Chall. Exp., vol. i. p. 272, may 1885.

Benthoteuthis, Verrill, Trans. Connect. Acad., vol. vi. p. 401, July 1885.

Body long, cyclindrical, tapering but slightly behind; fins subterminal, small and rounded; mantle-connective an elongated linear ridge fitting into a similar shorter groove on the base of the siphon, which is provided with a valve, but has no dorsal bridles.

Head large, very broad, with prominent eyes.

Arms very short, slender and conical; suckers very minute and in two series. Buccal membrane large, with seven points, each bearing one or two suckers.

Tentacles long, slender, without clubs, but with numerous minute suckers.

Gladius, resembling that of Ommastrephes in front, but expanded in the posterior third.”

(Hoyle, 1885: 308-309)

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Bathyteuthis ( الإنجليزية )

المقدمة من wikipedia EN

Bathyteuthis is the singular genus of squid in the family Bathyteuthidae, encompassing three species.

Bathyteuthis species are found scattered throughout the world’s oceans at mesopelagic to bathypelagic depths, commonly between 700 and 2,000 meters. They are found in deep-sea territories and can be spotted on the coast of New England.[2]

The genus contains bioluminescent species.[3]

Description

Bathyteuthis are deep reddish maroon in colour and small in size, with none exceeding 80 mm in mantle length.[4] The arms on Bathyteuthis are short, joined by a low, fleshy web, with suckers arranged in irregular rows (two proximally increasing to four distally).[4] Tentacular clubs are short and narrow, with 8-10 longitudinal series of numerous, minute suckers.[4] Buccal connectives have small suckers attached to the dorsal border of the ventral arms (arms IV).[4] Fins are small, round and separate.[4] The head has eyes turned slightly to the front.[4] Suckers lack circularis muscles.[5] Females have paired oviducts.[5]

Reproduction

While the reproduction of many deep-sea squids is poorly known, one Bathyteuthis species, B. berryi, is known to brood its eggs after spawning. It lays relatively few eggs but these eggs are large, protected from predators and parasites, and develop and hatch at a depth decided by the parent.[6]

Taxonomy

Eye of Bathyteuthis sp.

Bathyteuthis shares some characters with oegopsid squid and others with the Myopsida, hence its placement in a separate suborder, the Bathyteuthoidea, by some authorities.[4] The paired oviducts (in females) and suckers without circularis muscles are characteristic of ordinary Oegopsida. However, buccal connective tissue with suckers and tentacle pockets in the head are characters found in myopsid squid, but absent in the Oegopsida.

Species

References

  1. ^ Julian Finn (2016). "Bathyteuthis Hoyle, 1885". World Register of Marine Species. Flanders Marine Institute. Retrieved 24 February 2018.
  2. ^ "WoRMS - World Register of Marine Species - Bathyteuthis abyssicola Hoyle, 1885". www.marinespecies.org. Retrieved 2022-08-02.
  3. ^ Herring, Peter J. (1987). "Systematic distribution of bioluminescence in living organisms". Journal of Bioluminescence and Chemiluminescence. 1 (3): 147–163. doi:10.1002/bio.1170010303. PMID 3503524.
  4. ^ a b c d e f g Roper, C. F. E. (2016). "Bathyteuthidae Pfeffer 1900. Bathyteuthis Hoyle 1885". Retrieved 2 August 2022.
  5. ^ a b Fernández-Álvarez, Fernando Á; Taite, Morag; Vecchione, Michael; Villanueva, Roger; Allcock, A Louise (2022-04-11). "A phylogenomic look into the systematics of oceanic squids (order Oegopsida)". Zoological Journal of the Linnean Society. 194 (4): 1212–1235. doi:10.1093/zoolinnean/zlab069. ISSN 0024-4082.
  6. ^ Bush, Stephanie L.; Hoving, Hendrik J. T.; Huffard, Christine L.; Robison, Bruce H.; Zeidberg, Louis D. (2012). "Brooding and sperm storage by the deep-sea squid Bathyteuthis berryi (Cephalopoda: Decapodiformes)". Journal of the Marine Biological Association of the United Kingdom. 92 (7): 1629–1636. doi:10.1017/S0025315411002165. ISSN 0025-3154. S2CID 84879507.

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Bathyteuthis: Brief Summary ( الإنجليزية )

المقدمة من wikipedia EN

Bathyteuthis is the singular genus of squid in the family Bathyteuthidae, encompassing three species.

Bathyteuthis species are found scattered throughout the world’s oceans at mesopelagic to bathypelagic depths, commonly between 700 and 2,000 meters. They are found in deep-sea territories and can be spotted on the coast of New England.

The genus contains bioluminescent species.

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Bathyteuthis ( الفرنسية )

المقدمة من wikipedia FR

Les bathyteuthidés (Bathyteuthidae) forment une famille de calmars ne contenant que le genre Bathyteuthis.

Espèces

Selon World Register of Marine Species (14 mai 2016)[1] et ITIS (14 mai 2016)[2] :

Références taxinomiques

Notes et références

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Bathyteuthis: Brief Summary ( الفرنسية )

المقدمة من wikipedia FR

Les bathyteuthidés (Bathyteuthidae) forment une famille de calmars ne contenant que le genre Bathyteuthis.

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Bathyteuthis ( الإيطالية )

المقدمة من wikipedia IT

Il genere Bathyteuthis è l'unico membro della famiglia Bathyteuthidae, comprendente solo tre specie. Nessuna di queste ha una dimensione maggiore di 80 mm.

Le specie di questa famiglia si trovano in tutti gli oceani del mondo, sia a profondità mesopelagiche che batipelagiche, generalmente tra i 700 e i 2.000 metri. Nonostante vivano in acque profonde, possono essere avvistati al largo della costa della Nuova Inghilterra[1].

Caratteristiche

Le braccia dei Bathyteuthis sono corte, unite da un sottile strato di carne e le ventose sono disposte in file irregolari (due in posizione prossimale, che aumentano a quattro in posizione distale). Le clavette tentacolari sono corte e strette, presentando 8/10 serie longitudinali di numerose e piccole ventose. I connettivi boccali presentano piccole ventose attaccate al bordo dorsale delle braccia ventrali, le pinne sono piccole, rotonde e separate, la testa presenta tasche tentacolari e gli occhi sono leggermente rivolti in avanti. Gli ovidotti sono accoppiati. Le ventose mancano di muscoli circolari.

Alcune specie presentano caratteristiche di bioluminescenza[2].

Tassonomia

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Occhio di Bathyteuthis

Bathyteuthis condivide alcuni caratteri sia con i calamari Oegopsina che con i Myopsina, per questo viene talvolta posto in un sottordine, bathyteuthoidea[3] o in un ordine, bathyteuthida[4].Gli ovidotti appaiati e le ventose senza muscoli circolari sono caratteristici degli esemplari di Oegopsina. Tuttavia, il tessuto connettivo boccale con ventose e le tasche tentacolari sulla testa sono caratteristiche trovate nei calamari Miopsina, ma assenti negli Oegopsina.

Note

  1. ^ Connecticut Academy of Arts and Sciences. e Connecticut Academy of Arts and Sciences, Transactions of the Connecticut Academy of Arts and Sciences, vol. 6, Published by the Academy,, 1882. URL consultato il 12 ottobre 2021.
  2. ^ Peter J. Herring, Systematic distribution of bioluminescence in living organisms, in Journal of Bioluminescence and Chemiluminescence, vol. 1, n. 3, 1987, pp. 147–163, DOI:10.1002/bio.1170010303, PMID 3503524.
  3. ^ Tree of Life web project: Bathyteuthidae
  4. ^ WoRMS - World Register of Marine Species - Bathyteuthida, su www.marinespecies.org. URL consultato il 12 ottobre 2021.

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Bathyteuthis: Brief Summary ( الإيطالية )

المقدمة من wikipedia IT

Il genere Bathyteuthis è l'unico membro della famiglia Bathyteuthidae, comprendente solo tre specie. Nessuna di queste ha una dimensione maggiore di 80 mm.

Le specie di questa famiglia si trovano in tutti gli oceani del mondo, sia a profondità mesopelagiche che batipelagiche, generalmente tra i 700 e i 2.000 metri. Nonostante vivano in acque profonde, possono essere avvistati al largo della costa della Nuova Inghilterra.

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wikipedia IT