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{{short description|Species of mollusc}}
{{Short description|Species of mollusc}}
{{Speciesbox
{{italictitle}}
{{Taxobox
| name = ''Neverita duplicata''
| image = Core Banks - Moon Snail.JPG
| image = Core Banks - Moon Snail.JPG
| image_caption = A live ''Neverita duplicata'' at [[Core Banks, North Carolina]]
| image_caption = A live ''Neverita duplicata'' at [[Core Banks, North Carolina]]
| regnum = [[Animal]]ia
| genus = Neverita
| phylum = [[Mollusca]]
| species = duplicata
| classis = [[Gastropoda]]
| authority = ([[Thomas Say|Say]], 1822)
| unranked_superfamilia = clade [[Caenogastropoda]]<br />clade [[Hypsogastropoda]]<br/>clade [[Littorinimorpha]]
| superfamilia = [[Naticoidea]]
| familia = [[Naticidae]]
| subfamilia =
| genus = ''[[Neverita]]''
| subgenus =
| species = '''''N. duplicata'''''
| binomial = ''Neverita duplicata''
| binomial_authority = ([[Thomas Say|Say]], 1822)
| synonyms_ref = <ref name="WoRMS"/>
| synonyms_ref = <ref name="WoRMS"/>
| synonyms = ''Polinices duplicatus'' <small>(Say, 1822)</small>
| synonyms = ''Polinices duplicatus'' <small>(Say, 1822)</small>
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'''''Neverita duplicata''''', [[common name]] the '''shark eye''', is a [[species]] of [[predatory]] [[sea snail]], a [[marine (ocean)|marine]] [[gastropod]] [[mollusk]] in the [[family (biology)|family]] [[Naticidae]], the moon snails.<ref name="WoRMS">{{WRMS species|160407|''Neverita duplicata'' (Say, 1822)|||Rosenberg, G. (2010). Neverita duplicata (Say, 1822). Accessed through: [[World Register of Marine Species]] at <nowiki>http://www.marinespecies.org/aphia.php?p=taxdetails&id=160407</nowiki> on 17 June 2010}}</ref>
'''''Neverita duplicata''''', [[common name]] the '''shark eye''', is a [[species]] of [[predatory]] [[sea snail]], a [[marine (ocean)|marine]] [[gastropod]] [[mollusk]] in the [[family (biology)|family]] [[Naticidae]], the moon snails.<ref name="WoRMS">{{WRMS species|160407|''Neverita duplicata'' (Say, 1822)|||Rosenberg, G. (2010). Neverita duplicata (Say, 1822). Accessed through: [[World Register of Marine Species]] at <nowiki>http://www.marinespecies.org/aphia.php?p=taxdetails&id=160407</nowiki> on 17 June 2010}}</ref>

In 2006, a paper was published which made it clear that a second, very similar, species with a smaller range of distribution also lives in part of the range inhabited by ''Neverita duplicata''. The second species had previously been considered to be simply a form of ''N. duplicata'', but it is now recognized as ''[[Neverita delessertiana]]''.<ref name= "Huelsken2006">Huelsken, T. ''et al.'' (2006) ''Neverita delessertiana'' (Recluz in Chenu, 1843): a naticid species (Gastropoda: [[Caenogastropoda]]) distinct from ''Neverita duplicata'' (Say, 1822) based on molecular data, morphological characters, and geographical distribution. ''[[Zootaxa]]'', 1-25. [http://www.mapress.com/zootaxa/2006f/zt01257p025.pdf PDF].</ref>
In 2006, a paper was published which made it clear that a second, very similar, species with a smaller range of distribution also lives in part of the range inhabited by ''Neverita duplicata''. The second species had previously been considered to be simply a form of ''N. duplicata'', but it is now recognized as ''[[Neverita delessertiana]]''.<ref name= "Huelsken2006">Huelsken, T. ''et al.'' (2006) ''Neverita delessertiana'' (Recluz in Chenu, 1843): a naticid species (Gastropoda: [[Caenogastropoda]]) distinct from ''Neverita duplicata'' (Say, 1822) based on molecular data, morphological characters, and geographical distribution. ''[[Zootaxa]]'', 1-25. [http://www.mapress.com/zootaxa/2006f/zt01257p025.pdf PDF].</ref>


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This is a common western [[Atlantic]] species. It is found from [[Massachusetts]] and other parts of [[New England]], south to [[Florida]] and other states on the [[Gulf of Mexico]], south to [[Honduras]].
This is a common western [[Atlantic]] species. It is found from [[Massachusetts]] and other parts of [[New England]], south to [[Florida]] and other states on the [[Gulf of Mexico]], south to [[Honduras]].


== Description ==
==Description==
The shell has a flattened globular shape, and reaches about {{convert|88|to|90|mm}} in maximum dimension. The color of the shell is variable, but is often a greyish brown. The central [[Apex (mollusc)|apex]] of the shell is often a dark blue in fresh shells, which can make the shell somewhat resemble an [[eye]]. On the underside, there is a large brown [[parietal callus|callus]] which partly blocks the [[umbilicus (mollusk)|umbilicus]] of the shell.
The shell has a flattened globular shape, and reaches about {{convert|88|to|90|mm}} in maximum dimension. The color of the shell is variable, but is often a greyish brown. The central [[Apex (mollusc)|apex]] of the shell is often a dark blue in fresh shells, which can make the shell somewhat resemble an [[eye]]. On the underside, there is a large brown [[parietal callus|callus]] which partly blocks the [[umbilicus (mollusk)|umbilicus]] of the shell.


The maximum recorded [[gastropod shell|shell]] length is 82&nbsp;mm.<ref name="Welch 2010">Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". ''[[PLoS ONE]]'' '''5'''(1): e8776. {{doi|10.1371/journal.pone.0008776}}.</ref>
The maximum recorded [[gastropod shell|shell]] length is 82&nbsp;mm.<ref name="Welch 2010">Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". ''[[PLoS ONE]]'' '''5'''(1): e8776. {{doi|10.1371/journal.pone.0008776}}.</ref>


== Gallery ==
==Habitat==
This moon snail is found on sandy shores just below the low tide line. In most of its range, the empty shell is very commonly washed up on beaches, as also is the [[operculum (gastropod)|operculum]] and the [[sand collar]].

The minimum recorded depth for this species is 0 m; the maximum recorded depth is 58 m.<ref name="Welch 2010"/>

==Feeding habits==
The shark eye (like all moon snails) is [[predator]]y, feeding mainly on [[bivalves]] buried in the sand. This snail drills a neat "[[countersink|countersunk]]" circular hole through the shell of its prey species, and then feeds on the soft tissue within.

==Gallery==
<gallery>
<gallery>
File:Atlantic Moon Snail 001.jpg|A model of a live individual of ''Neverita duplicata''
File:Atlantic Moon Snail 001.jpg|A model of a live individual of ''Neverita duplicata''
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File:Neverita_duplicata_01.JPG|Fossil ''Neverita duplicata'' from the Pliocene of Florida
File:Neverita_duplicata_01.JPG|Fossil ''Neverita duplicata'' from the Pliocene of Florida
</gallery>
</gallery>

== Habitat ==
This moon snail is found on sandy shores just below the low tide line. In most of its range, the empty shell is very commonly washed up on beaches, as also is the [[operculum (gastropod)|operculum]] and the [[sand collar]].

The minimum recorded depth for this species is 0 m; the maximum recorded depth is 58 m.<ref name="Welch 2010"/>

==Feeding habits==
The shark eye (like all moon snails) is [[predator]]y, feeding mainly on [[bivalves]] buried in the sand. This snail drills a neat "[[countersink|countersunk]]" circular hole through the shell of its prey species, and then feeds on the soft tissue within.


==References==
==References==
{{Reflist}}
{{Reflist}}

== Further reading ==
* [[National Audubon Society]] Field Guide to North American Seashells


==External links==
==External links==

Latest revision as of 17:35, 22 June 2024

Neverita duplicata
A live Neverita duplicata at Core Banks, North Carolina
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Naticidae
Genus: Neverita
Species:
N. duplicata
Binomial name
Neverita duplicata
(Say, 1822)
Synonyms[1]

Polinices duplicatus (Say, 1822)

Neverita duplicata, common name the shark eye, is a species of predatory sea snail, a marine gastropod mollusk in the family Naticidae, the moon snails.[1]

In 2006, a paper was published which made it clear that a second, very similar, species with a smaller range of distribution also lives in part of the range inhabited by Neverita duplicata. The second species had previously been considered to be simply a form of N. duplicata, but it is now recognized as Neverita delessertiana.[2]

Distribution

[edit]

This is a common western Atlantic species. It is found from Massachusetts and other parts of New England, south to Florida and other states on the Gulf of Mexico, south to Honduras.

Description

[edit]

The shell has a flattened globular shape, and reaches about 88 to 90 millimetres (3.5 to 3.5 in) in maximum dimension. The color of the shell is variable, but is often a greyish brown. The central apex of the shell is often a dark blue in fresh shells, which can make the shell somewhat resemble an eye. On the underside, there is a large brown callus which partly blocks the umbilicus of the shell.

The maximum recorded shell length is 82 mm.[3]

Habitat

[edit]

This moon snail is found on sandy shores just below the low tide line. In most of its range, the empty shell is very commonly washed up on beaches, as also is the operculum and the sand collar.

The minimum recorded depth for this species is 0 m; the maximum recorded depth is 58 m.[3]

Feeding habits

[edit]

The shark eye (like all moon snails) is predatory, feeding mainly on bivalves buried in the sand. This snail drills a neat "countersunk" circular hole through the shell of its prey species, and then feeds on the soft tissue within.

[edit]

References

[edit]
  1. ^ a b Neverita duplicata (Say, 1822). Rosenberg, G. (2010). Neverita duplicata (Say, 1822). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=160407 on 17 June 2010 .
  2. ^ Huelsken, T. et al. (2006) Neverita delessertiana (Recluz in Chenu, 1843): a naticid species (Gastropoda: Caenogastropoda) distinct from Neverita duplicata (Say, 1822) based on molecular data, morphological characters, and geographical distribution. Zootaxa, 1-25. PDF.
  3. ^ a b Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. doi:10.1371/journal.pone.0008776.
[edit]