Cerion (gastropod)

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Cerion
Temporal range: Early Miocene–Recent[1]
Drawing of a live individual of Cerion chrysalis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Order: Stylommatophora
Infraorder: Helicina
Superfamily: Urocoptoidea
Family: Cerionidae
Genus: Cerion
Röding, 1798[2]
Type species
Turbo uva
Species

See text

Cerion is a

gastropods in the family Cerionidae, noted for its extreme morphological diversity. The genus is endemic to the Caribbean region.[4][5]

Cerion has been a

Distribution

These snails are

Ecology

Cerionid species inhabit nearshore terrestrial vegetation, usually within a few hundred meters of the shore but occasionally further inland, up to a kilometer away in areas influenced by salt spray. These snails thrive in dense but patchy populations, often numbering over ten thousand individuals. They are more visible in open vegetation and less so in leaf litter. The populations are generally uniform in shell size and morphology, with greater uniformity observed in more isolated populations.[5][9]

Morphological Diversity

Cerion snail shells collected on Andros Island, Bahamas. Note variation in morphology from ridged to smooth, color in degree of stripedness, and length to width ratio. Scale at bottom is in centimeters.

Cerion is one of the most

genera among land snails. Members of this genus exhibit exceptional morphological diversity, contributing to nearly 500 species recognized. This diversity is primarily manifested in shell form, ranging from spherical to elongated shapes. [1]

Within

Taxonomy

First described by

In a notable revision by

Cerion has been subject to

superfamily Urocoptoidea, which also includes the North American and circum-Caribbean Urocoptidae.[7]

Evolution

Research has explored the relationships between morphological variations and genetic differences, the dynamics of hybrid zones, and the persistence of hybrids over time. Studies have shown that morphological variations are stable over time, suggesting a strong genetic component influenced by limited gene flow between populations. [4][6]

Calcrete paleosol from San Salvador Island’s bedrock. This Late Pleistocene calcrete has three fossil Cerion land snail shells, along with a fossil Tectarius snail shell, in cemented lime sand. Calcretes are lithified soil horizons, and are composed of calcium carbonate (CaCO3).

The fossil range of Cerion is possibly from the

Quaternary period, reveal patterns and trends that provide insights into these evolutionary processes.[6]

Species

Species within the genus Cerion include:

References

  1. ^ a b c d e f g "Cerion: a web-based resource for Cerion research and identification". accessed 5 April 2011.
  2. ^ Röding P. F. (1798). Museum Boltenianum sive catalogus cimeliorum e tribus regnis naturæ quæ olim collegerat Joa. Fried Bolten, M. D. p. d. per XL. annos proto physicus Hamburgensis. Pars secunda continens conchylia sive testacea univalvia, bivalvia & multivalvia. pp. [1-3], [1-8], 1-199. Hamburg. page 90.
  3. ^ a b "Cerion Röding, 1798". WoRMS. World Register of Marine Species.
  4. ^
    PMID 26378443
    .
  5. ^ .
  6. ^ .
  7. ^ .
  8. ^ .
  9. ^ Baker F. C. (1903). Shells of land and water; a familiar introduction to the study of the mollusks. Chicago, A.W. Mumford, page 48.
  10. ^ .
  11. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg bh bi bj bk bl bm bn bo bp bq br bs bt bu bv bw bx by bz ca cb cc cd ce cf cg ch ci cj ck cl "Mollusca" Archived July 18, 2011, at the Wayback Machine. Diversidad Biológica Cubana, accessed 23 March 2011.
  12. ^ "Cerion". Smithsonian Institution, accessed 17 May 2016.
  13. ^ "Cerion uva (Linnaeus, 1758)". WoRMS. World Register of Marine Species.

External links