Helicocranchia pfefferi

Banded piglet squid
Ventral view of a specimen taken off Southern California (41 mm ML)
Scientific classification
Kingdom:Animalia
Phylum:Mollusca
Class:Cephalopoda
Order:Oegopsida
Family:Cranchiidae
Subfamily:Taoniinae
Genus:Helicocranchia
Species: H. pfefferi
Binomial name
Helicocranchia pfefferi
Massy, 1907[2]
Synonyms

Helicocranchia beebei Robson, 1948

Helicocranchia pfefferi, the banded piglet squid, is a small squid of the genus Helicocranchia. Adults of this species are mesopelaegic.

Physical characteristics

The average size of adult H. pfefferi is 100 mm (3.9 in) in mantle length (ML). The body consists of a large funnel with small paddle-like fins. They have small tentacles above their eyes. The funnel does not have valves, but contains a dorsal pad with three papillae as organs. Paddle-shaped fins are attached to a part of the gladius. H. pfefferi has a single ocular photophore and does not have photophores at its arm tips.

Habitat

As paralarvae (<30 mm ML), they live near the surface of the oceans, between 100 m and 200 m deep. They descend to the mesopelagic zone as they mature, but do not exhibit a diel vertical migration pattern.[3]

References

  1. ↑ Barratt, I.; Allcock, L. (2014). "Helicocranchia pfefferi". The IUCN Red List of Threatened Species. 2014: e.T162906A951921. doi:10.2305/IUCN.UK.2014-1.RLTS.T162906A951921.en. Downloaded on 01 March 2018.
  2. ↑ Julian Finn (2016). "Helicocranchia pfefferi Massy, 1907". World Register of Marine Species. Flanders Marine Institue. Retrieved 1 March 2018.
  3. ↑ Lu, C.C. & M.R. Clarke (1975). "Vertical Distribution of Cephalopods at 11° N 20° W in the North Atlantic". Journal of the Marine Biological Association of the United Kingdom. 55 (2): 369–389. doi:10.1017/S0025315400016003.
  • Young, R.E. & K.M. Mangold (1922-2003). 2006. Helicocranchia Massy, 1907. Version 16 July 2006 (under construction). In: The Tree of Life Web Project.
  • "CephBase: Helicocranchia pfefferi". Archived from the original on 2005.
  • Images of Helicocranchia from the SERPENT Project
  • Blog post with lots of information
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