Conoidea

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Conoidea
Conus californicus.jpg
A live Californiconus californicus , in situ , anterior end on the right
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Fleming, 1822 [1]
Families

See text

Conoidea is a superfamily of predatory sea snails, marine gastropod mollusks within the suborder Hypsogastropoda. This superfamily is a very large group of marine mollusks, estimated at 340 recent valid genera and subgenera, and considered by one authority to contain 4,000 named living species. [2]

Contents

This superfamily includes the turrids, the terebras (also known as auger snails or auger shells) and the cones or cone snails. [2] The phylogenetic relationships within this superfamily are poorly established. Several families (especially the Turridae), subfamilies and genera are thought to be polyphyletic. [2]

In contrast to Puillandre's estimate, Bandyopadhyay et al. (2008) [3] estimated that the superfamily Conoidea contains about 10,000 species. Tucker (2004) even speaks of 11,350 species in the group of taxa commonly referred to as turrids. [4] 3000 recent taxa are potentially valid species. Little more than half of the known taxa are fossil species. Many species are little known and need more investigation to find their exact systematic place. [4]

Most species in this superfamily are small to medium, with shell lengths between 3 mm and 50 mm. They occur in diverse marine habitats from tropical waters to the poles, in shallow or deep waters, and on hard to soft substrates.

The superfamily is known for its toxoglossan radula, which is used to inject powerful neurotoxins into its prey. This makes these species powerful carnivorous predators on annelid, other mollusc and even fish.

Within the superfamily there are four somewhat different varieties of radula. [5] The radula types [6] are as follows:

In 2009, a proposed new classification of this superfamily was published by John K. Tucker and Manuel J. Tenorio. In 2011, a new classification of this superfamily was published by Bouchet et al. Both classifications were based upon cladistical analyses and included modern taxonomic molecular phylogeny studies.

Families

1993 taxonomy

Families and subfamilies included within the superfamily Conoidea according to Taylor, et al. 1993 [7]

This same classification was accepted by Bouchet & Rocroi in 2005. [8]

2009 taxonomy

In 2009 John K. Tucker and Manuel J. Tenorio proposed a classification system for the cone shells and their allies (which resorb their inner walls during growth) based upon a cladistical analysis of anatomical characters including the radular tooth, the morphology (i.e. shell characters), as well as an analysis of prior molecular phylogeny studies, all of which were used to construct phylogenetic trees. [9] In their phylogeny, Tucker and Tenorio noted the close relationship of the cone species within the various clades, corresponding to their proposed families and genera; this also corresponded to the results of prior molecular studies by Puillandre et al. and others. [10] [11] [12] [13] [14] [15] [16] This 2009 proposed classification system also outlined the taxonomy for the other clades of Conoidean gastropods (that do not resorb their inner walls), also based upon morphological, anatomical, and molecular studies, and removes the turrid snails (which are a distinct large and diverse group) from the cone snails and creates a number of new families. [9] For Tucker and Tenorio's classification system for the cone shells and their allies (and the other clades of Conoidean gastropods) see Tucker & Tenorio cone snail taxonomy 2009.

2011 taxonomy

The original classification, Taylor et al. 1993 (and Bouchet & Rocroi in 2005) was thoroughly changed by the publication in 2011 of the article. [17] The authors presented a new classification of the Conoidea on the genus level, based on anatomical characters but also on the molecular phylogeny as presented by Puillandre N., et al., 2008. [18] They recognize fifteen families: Conidae, Terebridae, and the polyphyletic family Turridae resolved into 13 monophyletic families (containing 358 currently recognized genera and subgenera). The authors follow tentatively the classification for the family Conidae as presented by Tucker & Tenorio, 2009 [9] who divided the monogeneric family Conidae into 82 genera. However, there is no final opinion on this issue yet, as a new molecular phylogeny of the Conidae is in preparation. There are a number of genera within the Conoidea that could not be assigned to any family.

In 2012, a new lineage in the Conoidea was revealed, leading to the creation of a new family Bouchetispiridae Kantor, Strong & Puillandre, 2012 that includes one genus Bouchetispira Kantor, Strong & Puillandre, 2012 and one species Bouchetispira vitrea Kantor, Strong & Puillandre, 2012, which was found on an isolated sea mount off New Caledonia. This is probably the sole survivor of a larger clade. [19]

Recognized families in the Conoidea (as of 2020):

Conoidea (unassigned)

Genera not assigned to a family:

Families and subfamilies brought into synonymy
Genera (not assigned to a family) brought into synonymy

Related Research Articles

<span class="mw-page-title-main">Conidae</span> Family of sea snails

Conidae, with the current common name of "cone snails", is a taxonomic family of predatory sea snails, marine gastropod molluscs in the superfamily Conoidea.

<span class="mw-page-title-main">Turrid</span> Common name for many species of snail

Turrid, plural turrids, is a common name for a very large group of predatory sea snails, marine gastropod mollusks which until recently were all classified in the family Turridae. However, recently the family was discovered to be polyphyletic and therefore was split into a number of families.

<span class="mw-page-title-main">Pseudomelatomidae</span> Family of gastropods

Pseudomelatomidae is a family of predatory sea snails, marine gastropods included in the superfamily Conoidea and part of the Neogastropoda.

Mangeliidae is a monophyletic family of small to medium-sized, predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.

<i>Marshallena</i> Genus of gastropods

Marshallena is a genus of sea snails, marine gastropod mollusks in the family Marshallenidae.

<span class="mw-page-title-main">Raphitominae</span> Subfamily of gastropods

Raphitominae was a subfamily of small to quite large sea snails, marine gastropod mollusks in the superfamily Conoidea.

<span class="mw-page-title-main">Conorbidae</span> Family of gastropods

Conorbidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea. Despite the name of the family, which might seem to suggest otherwise, this group of gastropods are not cone snails, but are instead what used to be loosely called "turrids".

<span class="mw-page-title-main">Borsoniidae</span> Family of sea snails

Borsoniidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.

<span class="mw-page-title-main">Horaiclavidae</span> Family of gastropods

Horaiclavidae is a family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.

<i>Benthofascis</i> Genus of gastropods

Benthofascis is a genus of sea snails, marine gastropod mollusks in the family Conorbidae.

<i>Calamiconus</i> Subgenus of gastropods

Calamiconus is a subgenus of sea snails, marine gastropod mollusks in the genus Conus, family Conidae, the cone snails and their allies.

<i>Californiconus</i> Genus of gastropods

Californiconus is a genus of sea snails, marine gastropod mollusks. The experts at WoRMS place this group of species in the family Conidae, the cone snails, but some other experts placed previously the genus in a proposed family, the Conilithidae. This is a monotypic genus.

<i>Dalliconus</i> Subgenus of gastropods

Dalliconus is a subgenus of sea snails, marine gastropod mollusks in the genus Conasprella, family Conidae, the cone snails and their allies.

<span class="mw-page-title-main">Taxonomy of the Conoidea (Tucker & Tenorio, 2009)</span> Classification of cone snails and allies

The taxonomy of the cone snails and their allies as proposed by John K. Tucker and Manuel J. Tenorio in 2009 was a biological classification system for a large group of predatory sea snails. This system was an attempt to make taxonomic sense of the large and diverse group which contains the family Conidae, the cone snails. The authors proposed extensive changes to the family Conidae in contrast to the way the group was treated in the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005. Bouchet and Rocroi included in the family Conidae several other groups of toxoglossan snails which had previously been placed in the Turridae.

<i>Endemoconus</i> Subgenus of gastropods

Endemoconus is subgenus of sea snails, marine gastropod mollusks in the genus Conasprella, family Conidae, the cone snails and their allies.

<span class="mw-page-title-main">Raphitomidae</span> Family of sea snails

Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.

<span class="mw-page-title-main">Conilithidae</span> Family of gastropods

Conilithidae is a proposed taxonomic family of small to medium-sized sea snails, specifically cone snails, marine gastropod mollusks in the superfamily Conoidea, the cone snails and their allies.

<i>Kohniconus</i> Subgenus of gastropods

Kohniconus is a subgenus of sea snails, marine gastropod mollusks in the genus Conasprella, family Conilithidae, the cone snails and their allies.

<i>Perplexiconus</i> Subgenus of gastropods

Perplexiconus has become a synonym of Conasprella (Ximeniconus) Emerson & Old, 1962, a subgenus of sea snails, marine gastropod mollusks in the family Conidae, the cone snails and their allies.

<span class="mw-page-title-main">Turridae</span> Family of gastropods

Turridae is a taxonomic family name for a number of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.

References

  1. ↑ Fleming J. (June 1822). The philosophy of zoology, a general view of the structure, functions and classification of animals2. Constable & Co., Edinburgh, 618 pp., Conidae is on the page 490.
  2. 1 2 3 Puillandre, N.; Samadi, S.; Boisselier, M. -C.; Sysoev, A. V.; Kantor, Y. I.; Cruaud, C.; Couloux, A.; Bouchet, P. (2008). "Starting to unravel the toxoglossan knot: Molecular phylogeny of the "turrids" (Neogastropoda: Conoidea)" (PDF). Molecular Phylogenetics and Evolution. 47 (3): 1122–1134. doi:10.1016/j.ympev.2007.11.007. PMID   18180170. S2CID   44787828.
  3. ↑ Bandyopadhyay, P. K.; Stevenson, B. J.; Ownby, J. P.; Cady, M. T.; Watkins, M.; Olivera, B. M. (2008). "The mitochondrial genome of Conus textile, coxI–coxII intergenic sequences and Conoidean evolution". Molecular Phylogenetics and Evolution. 46 (1): 215–223. doi:10.1016/j.ympev.2007.08.002. PMC   2718723 . PMID   17936021.
  4. 1 2 Tucker, J.K. 2004 Catalog of recent and fossil turrids (Mollusca: Gastropoda). Zootaxa 682:1–1295.
  5. ↑ Kantor, Yuri I.; Taylor (1991). "John D.". J. Molluscan Stud. 57 (1): 129–134. doi:10.1093/mollus/57.1.129.
  6. ↑ Kantor, Yuri I.; Taylor (2000). "John D." (PDF). J. Zool. Lond. 252: 251–262. doi:10.1017/s0952836900009985. Archived from the original (PDF) on 20 January 2022. Retrieved 27 August 2011.
  7. ↑ Taylor, J. D.; Kantor, Y. I.; Sysoev, A. V. (1993). "Foregut anatomy, feeding mechanisms, relationships and classification of Conoidea (Toxoglossa) (Gastropoda)". Bull. Br. Mus. (Nat. Hist.) Zool. 59: 125–169.
  8. ↑ Bouchet P., Rocroi J.-P., Frýda J., Hausdorf B., Ponder W., Valdés Á. & Warén A. (2005). "Classification and nomenclator of gastropod families". Malacologia: International Journal of Malacology (Hackenheim, Germany: ConchBooks) 47 (1–2): 1–397. ISBN   3-925919-72-4. ISSN   0076-2997
  9. 1 2 3 Tucker J.K. & Tenorio M.J. (2009) Systematic classification of Recent and fossil conoidean gastropods. Hackenheim: Conchbooks. 296 pp., at p. 133
  10. ↑ P.K. Bandyopadhyay, B.J. Stevenson, J.P. Ownby, M.T. Cady, M. Watkins, & B. Olivera (2008), The mitochondrial genome of Conus textile, coxI-conII intergenic sequences and conoidean evolution. Molecular Phylogenetics and Evolution 46: 215-223.
  11. ↑ S.T. Williams & T.F. Duda, Jr. (2008), Did tectonic activity stimulate Oligo-Miocene speciation in the Indo-West Pacific? Evolution 62:1618-1634.
  12. ↑ R.L. Cunha, R. Castilho, L. Ruber, & R. Zardoya (2005), Patterns of cladogenesis in the venomous marine gastropod genus Conus from the Cape Verde Islands Systematic Biology 54(4):634-650.
  13. ↑ T.F. Duda, Jr. & A.J. Kohn (2005), Species-level phylogeography and evolutionary history of the hyperdiverse marine gastropod genus Conus, Molecular Phylogenetics and Evolution 34:257-272.
  14. ↑ T.F. Duda, Jr. & E. Rolan (2005), Explosive radiation of Cape Verde Conus, a marine species flock, Molecular Ecology 14:267-272.
  15. ↑ B. Vallejo, Jr. (2005), Inferring the mode of speciation in the Indo-West Pacific Conus (Gastropoda: Conidae), Journal of Biogeography 32:1429-1439.
  16. ↑ N. Puillandre, S. Samadi, M. Boesselier, A. Sysoev, Y. Kantor, C. Cruaud, A. Couloux, & P. Bouchett (2008), Starting to unravel the toxoglossan knot: molecular phylogeny of the "turrid" (Neogastropoda: Conoidea), Molecular Phylogenetics and Evolution 47:1122-1134.
  17. ↑ Bouchet, P.; Kantor, Yu.I.; Sysoev, A.; Puillandre, N. (2011). "A new operational classification of the Conoidea". Journal of Molluscan Studies. 77: 273–308. doi: 10.1093/mollus/eyr017 .
  18. ↑ Puillandre, N.; et al. (2008). "Starting to unravel the toxoglossan knot: molecular phylogeny of the 'turrids' (Neogastropoda: Conoidea)" (PDF). Molecular Phylogenetics and Evolution. 47 (3): 1122–1134. doi:10.1016/j.ympev.2007.11.007. PMID   18180170. S2CID   44787828.
  19. ↑ Kantor, Y.I.; Strong, E.E.; Puillandre, N. (2012). "A new lineage of Conoidea (Gastropoda: Neogastropoda) revealed by morphological and molecular data". Journal of Molluscan Studies. 78 (3): 246–255. doi: 10.1093/mollus/eys007 .
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