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Neptunea antiqua

From Wikipedia, the free encyclopedia

Red whelk
Live individual of Neptunea antiqua
Shell
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Family: Buccinidae
Genus: Neptunea
Species:
N. antiqua
Binomial name
Neptunea antiqua

Neptunea antiqua, common name the red whelk, is a species of Northeast Atlantic sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks.[1]

Description

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N. antiqua resembles Buccinum undatum (common whelk). It can grow to a length of 20 cm (7.9 in),[2] although most specimens only reach half that size.[3] It is the largest marine snail in parts of its range.[2]

Distribution

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N. antiqua is found in the Northeast Atlantic along cold-temperate European coasts, ranging from the low water mark[4] to a depth of 1,200 m (3,900 ft).[3]

Eggs of Neptunea antiqua

Feeding

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N. antiqua is primarily a scavenger, although it has been recorded attacking and eating some living polychaete species.[4] Unlike several of its more predatory relatives, experiments have shown that even hungry N. antiqua are not attracted to living undamaged mussels.[4]

Food poisoning

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Tetramethylammonium chloride, the principal toxin in red whelks

N. antiqua contains tetramethylammonium salts (most likely the chloride) in its tissues, and has been the source of non-lethal human poisoning. [5]

References

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  1. ^ Neptunea antiqua (Linnaeus, 1758). Retrieved through: World Register of Marine Species on 17 April 2010.
  2. ^ a b Naturstyrelsen: Rødkonk. Archived 11 September 2014 at the Wayback Machine Retrieved 11 September 2014.
  3. ^ a b MarLIN: Red whelk - Neptunea antiqua. Retrieved 11 September 2014.
  4. ^ a b c Pearce and Thorson (1967). The feeding and reproductive biology of the red whelk, Neptunea antiqua (L.) (Gastropoda, Prosobranchia). Ophelia 4(2): 277–314.
  5. ^ U. Anthoni, L. Bohlin, C. Larsen, P. Nielsen, N. H. Nielsen, and C. Christophersen (1989). "The toxin tetramine from the "edible" whelk Neptunea antiqua." Toxicon 27 717–723.