Chtenopteryx sicula

Comb-finned squid
Chtenopteryx sicula caught off Naples.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Bathyteuthida
Family: Chtenopterygidae
Genus: Chtenopteryx
Species:
C. sicula
Binomial name
Chtenopteryx sicula
(Vérany, 1851)[2]
Synonyms[2]
  • Calliteuthis nevroptera Jatta, 1896
  • Chtenopteryx fimbriatus Appellöf, 1890
  • Chtenopteryx siculus (Vérany, 1851)
  • Ctenopteryx cyprinoides Joubin, 1894
  • Ctenopteryx sicula (Vérany, 1851)
  • Sepioteuthis sicula Vérany, 1851

Chtenopteryx sicula, also known as the comb-finned squid or toothed-fin squid, is a species of squid native to at least the Mediterranean Sea. It is characterised by several distinct morphological features: ocular photophores are present but visceral photophores are absent, arm suckers are arranged in at least 4 series distally, and club suckers are borne in more than 8 series.

The type specimen was collected off Messina, Italy; the specific name sicula means "of Sicily". It is deposited at the Muséum d'Histoire Naturelle (Musée Barla) in Nice.[3]

  • Ventral view of the viscera, showing the absence of a visceral photophore and the presence of the accessory nidamental gland.
    Ventral view of the viscera, showing the absence of a visceral photophore and the presence of the accessory nidamental gland.
  • Fresh-caught specimens of C. sicula from the North Atlantic
    Fresh-caught specimens of C. sicula from the North Atlantic
  • Chtenopteryx sicula paralarvae. Left: Two very young paralarvae. The circular tentacular clubs bear approximately 20 irregularly arranged suckers. Two chromatophores are present on each side of the mantle. Centre: Ventral, dorsal and side views of a more advanced paralarva. An equatorial circulet of seven large yellow-brown chromatophores is present on the mantle. Posteriorly the expanded vanes of the gladius are visible in the dorsal view. Right: Ventral and dorsal views of a very advanced paralarva.
    Chtenopteryx sicula paralarvae. Left: Two very young paralarvae. The circular tentacular clubs bear approximately 20 irregularly arranged suckers. Two chromatophores are present on each side of the mantle. Centre: Ventral, dorsal and side views of a more advanced paralarva. An equatorial circulet of seven large yellow-brown chromatophores is present on the mantle. Posteriorly the expanded vanes of the gladius are visible in the dorsal view. Right: Ventral and dorsal views of a very advanced paralarva.

References

  1. ^ Allcock, L.; Young, R. (2014). "Chtenopteryx sicula". IUCN Red List of Threatened Species. 2014: e.T162910A952453. doi:10.2305/IUCN.UK.2014-1.RLTS.T162910A952453.en. Retrieved 18 November 2021.
  2. ^ a b Julian Finn (2016). "Chtenopteryx sicula (Vérany, 1851)". World Register of Marine Species. Flanders Marine Institute. Retrieved 25 February 2018.
  3. ^ Current Classification of Recent Cephalopoda Archived December 10, 2006, at the Wayback Machine

Further reading

  • Naef, A. 1921–23. Cephalopoda. Fauna e Flora de Golfo di Napoli. Monograph, no. 35.
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