| 词条 | Helicocranchia pfefferi |
| 释义 |
| name = Banded piglet squid | status = DD | status_system = IUCN3.1 | status_ref = [1] | image = Helicopfefferidraw2.jpg | image_caption = Ventral view of a specimen taken off Southern California (41 mm ML) | taxon = Helicocranchia pfefferi | display_parents = 3 | authority = 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 characteristicsThe average size of adult H. pfefferi is {{convert|100|mm|in|abbr=on}} 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.{{Citation needed|date=October 2008}} 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. HabitatAs 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] References1. ^{{cite journal | author1 = Barratt, I. | author2 = Allcock, L. | year = 2014 | title = Helicocranchia pfefferi | journal = The IUCN Red List of Threatened Species | volume = 2014 | page = e.T162906A951921 | doi = 10.2305/IUCN.UK.2014-1.RLTS.T162906A951921.en}} Downloaded on 01 March 2018. 2. ^{{cite web | url = http://www.marinespecies.org/aphia.php?p=taxdetails&id=139424 | title = Helicocranchia pfefferi Massy, 1907 | accessdate = 1 March 2018 | publisher = Flanders Marine Institute | year = 2016 | author = Julian Finn | work = World Register of Marine Species}} 3. ^{{cite journal |author=Lu, C.C. & M.R. Clarke |title=Vertical Distribution of Cephalopods at 11° N 20° W in the North Atlantic |journal=Journal of the Marine Biological Association of the United Kingdom |volume=55 |issue=2 |pages=369–389 |year=1975 |doi=10.1017/S0025315400016003}}
External links{{Commons category|Helicocranchia pfefferi}}{{CephBase Species|444}}
2 : Squid|Molluscs described in 1907 |
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