Helicocranchia pfefferi explained

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 100mm 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 exhibit a diel vertical migration pattern.^[1]

Prey

Its diet resembles that of most squid: fish, shrimp, and squid.

• 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.

External links

• Images of Helicocranchia from the SERPENT Project
• Blog post with much information

Notes and References

1. Lu, C.C. & M.R. Clarke . 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 . 1975 . 10.1017/S0025315400016003. 250946620 .