Kohniconus

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Kohniconus
Conus emarginatus.JPG
Apertural view of shell of Conasprella emarginata(Reeve, 1844), with operculum, measuring 80.0 mm in height, collected in the Bay of Chiriqui, Panama.
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
clade Hypsogastropoda
clade Neogastropoda
Superfamily:
Conoidea
Family:
Conidae
Genus:
Conasprella
Subgenus:
Conasprella (Kohniconus)

Tucker & Tenorio, 2009

Kohniconus is a subgenus of sea snails, marine gastropod mollusks in the genus Conasprella , family Conilithidae, the cone snails and their allies. [1]

Contents

This subgenus was named in honor of Alan J. Kohn, the cone shell authority. [2]

In the new classification of the family Conidae by Puillandre N., Duda T.F., Meyer C., Olivera B.M. & Bouchet P. (2015), Kohniconus has become a subgenus of Conasprella: Conasprella (Kohniconus)Tucker & Tenorio, 2009 represented as Conasprella Thiele, 1929 [3]

Distinguishing characteristics

The Tucker & Tenorio 2009 taxonomy distinguishes Kohniconus from Conus in the following ways: [2]

Shell characters (living and fossil species)
The basic shell shape is conical to elongated conical, has a deep anal notch on the shoulder, a smooth periostracum and a small operculum. The shoulder of the shell is usually nodulose and the protoconch is usually multispiral. Markings often include the presence of tents except for black or white color variants, with the absence of spiral lines of minute tents and textile bars.
Radular tooth (not known for fossil species)
The radula has an elongated anterior section with serrations and a large exposed terminating cusp, a non-obvious waist, blade is either small or absent and has a short barb, and lacks a basal spur.
Geographical distribution
These species are found in the Indo-Pacific region.
Feeding habits
These species eat other gastropods including cones. [2]
Shell characters (living and fossil species)
The shell is turbinate in shape. The protoconch is multispiral. The shell is ornamented with cords and nodules which may persist or become obsolete. The anal notch is deep. The periostracum is smooth, and the operculum is large.
Radular tooth (not known for fossil species)
The anterior section of the radular tooth is much shorter than the posterior section, and a short blade is present. A basal spur is present, and the barb is short. The shaft fold is blunt at the anterior end.
Geographical distribution
The species in this genus occur in the West Atlantic and Eastern Pacific regions.
Feeding habits
The species in this genus are vermivorous (meaning that these snails prey on marine worms). [2]

Species list

This list of species is based on the information in the World Register of Marine Species (WoRMS) list. Species within the genus Kohniconus include: [1]

Significance of "alternative representation"

Prior to 2009, all cone species were placed within the family Conidae and were placed in one genus, Conus . In 2009 however, J.K. Tucker and M.J. Tenorio proposed a classification system for the over 600 recognized species that were in the family. Their classification proposed 3 distinct families and 82 genera for the living species of cone snails, including the family Conilithidae. This classification was based upon shell morphology, radular differences, anatomy, physiology, cladistics, with comparisons to molecular (DNA) studies. [2] Published accounts of genera within the Conidae (or Conilithidae) that include the genus Kohniconus include J.K. Tucker & M.J. Tenorio (2009), and Bouchet et al. (2011). [4]

Testing in order to try to understand the molecular phylogeny of the Conidae was initially begun by Christopher Meyer and Alan Kohn, [5] and is continuing, particularly with the advent of nuclear DNA testing in addition to mDNA testing.

However, in 2011, some experts still use the traditional classification, where all species are placed in Conus within the single family Conidae: for example, according to the current November 2011 version of the World Register of Marine Species, all species within the family Conidae are in the genus Conus. The binomial names of species in the 82 cone snail genera listed in Tucker & Tenorio 2009 are recognized by the World Register of Marine Species as "alternative representations." [6] Debate within the scientific community regarding continues, and additional molecular phylogeny studies are being carried out in an attempt to clarify the issue. [2] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21]

All this has been superseded in 2015 by the new classification of the Conidae [3]

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">Coninae</span> Family of molluscs

Coninae, or as it is more recently represented as a family, Conidae, common names the cone snails, cone shells or cones, is a taxonomic group of small to large predatory sea snails with cone-shaped shells, marine gastropod mollusks in the superfamily Conoidea.

<i>Jaspidiconus</i> Subgenus of gastropods

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

<i>Africonus</i> Subgenus of gastropods

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

<i>Austroconus</i> Genus of gastropods

Austroconus is a proposed genus of sea snails, marine gastropod mollusks in the family Conidae, the cone snails and their allies.

<i>Bathyconus</i> Subgenus of gastropods

Bathyconus is a subgenus of sea snails, cone snails, marine gastropod mollusks in the genus Conasprella, 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>Conasprella</i> Genus of gastropods

Conasprella is a genus of sea snails, marine gastropod mollusks in the family Conidae, the cone snails and their allies. This genus was formerly treated by some experts as a member of the family Conilithidae and as an "alternative representation" of this group of species.

<i>Conasprelloides</i> Subgenus of molluscs

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

<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.

<i>Dauciconus</i> Subgenus of gastropods

Dauciconus is a subgenus of sea snails, marine gastropod mollusks in the genus Conus, 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">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>Fusiconus</i> Subgenus of gastropods

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

<i>Globiconus</i> Subgenus of gastropods

Globiconus 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">Gradiconus</span> Subgenus of gastropods

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

<i>Lilliconus</i> Subgenus of gastropods

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

<i>Parviconus</i> Subgenus of gastropods

Parviconus is a subgenus of sea snails, marine gastropod mollusks in the genus Conasprella, family Conidae, the cone snails and their allies. This genus currently is still treated by some experts as an "alternative representation" of this group of species.

<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.

References

  1. 1 2 Bouchet, P. (2015). Kohniconus Tucker & Tenorio, 2009. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=571643 on 2015-03-17
  2. 1 2 3 4 5 6 Tucker J.K. & Tenorio M.J. (2009), Systematic Classification of Recent and Fossil Conoidean Gastropods, ConchBooks, Hankenheim, Germany, 295 pp.
  3. 1 2 Puillandre N., Duda T.F., Meyer C., Olivera B.M. & Bouchet P. (2015). One, four or 100 genera? A new classification of the cone snails. Journal of Molluscan Studies. 81: 1-23
  4. ↑ Bouchet P., Kantor Yu.I., Sysoev A. & Puillandre N. (2011). "A new operational classification of the Conoidea". Journal of Molluscan Studies 77: 273-308.
  5. ↑ Interview of Professor Alan Kohn, Professor Emeritus, Zoology "SEASHELL COLLECTOR | Interview of Pr Alan Kohn, Professor Emeritus, Zoology". Archived from the original on 2012-02-27. Retrieved 2011-12-04.
  6. ↑ http://www.marinespecies.org/aphia.php?p=taxdetails&id=14107 Classification: Traditionally, all cone shells have been included in the Linnaean genus Conus. Tucker & Tenorio (2009) have recently proposed an alternative shell- and radula-based classification that recognizes 4 families and 80 genera of cones. In WoRMS, we currently still recognize a single family Conidae (following Puillandre et al. 2011), but Tucker & Tenorio's 80 genera classification is presented as "alternative representation". [P. Bouchet, 14 Aug. 2011]
  7. ↑ C.M.L. Afonso & M.J. Tenorio (August 2011), A new, distinct endemic Africonus species (Gastropoda, Conidae) from Sao Vicente Island, Cape Verde Archipelago, West Africa, Gloria Maris 50(5): 124-135
  8. ↑ P. Bouchet, Yu I. Kantor, A. Sysoev, and N. Puillandre (March 2011), A New Operational Classification of the Conoidea, Journal of Molluscan Studies 77:273-308, at p. 275.
  9. ↑ N. Puillandre, E. Strong, P. Bouchet, M. Boisselier, V. Couloux, & S. Samadi (2009), Identifying gastropod spawn from DNA barcodes: possible but not yet practicable, Molecular Ecology Resources 9:1311-1321.
  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. ↑ Tucker, J. K. & Stahlschmidt, P. (2010) A second species of Pseudoconorbis (Gastropoda: Conoidea) from India. Miscellanea Malacologica 4(3):31-34.
  17. ↑ Tucker, J. K., Tenorio, M. J. & Stahlschmidt, P. (2011) The genus Benthofascis (Gastropoda: Conoidea): a revision with descriptions of new species. Zootaxa 2796:1-14.
  18. ↑ Puillandre N., Meyer C.P., Bouchet P., and Olivera B.M. (2011), Genetic divergence and geographical variation in the deep-water Conus orbignyi complex (Mollusca: Conoidea), Zoologica Scripta 40(4) 350-363.
  19. ↑ Tucker, J. K. & Tenorio, M. J. (2011) New species of Gradiconus and Kohniconus from the western Atlantic (Gastropoda: Conoidea: Conidae, Conilithidae). Miscellanea Malacologica 5(1):1-16.
  20. ↑ Petuch, E. J. & Sargent, D. M. (2011) New species of Conidae and Conilithidae (Gastropoda) from the tropical Americas and Philippines. With notes on some poorly-known Floridian species. Visaya 3(3):116-137.
  21. ↑ Petuch & Drolshage (2011) Compendium of Florida Fossil Shells, Volume 1 MDM Publications, Wellington, FL., 432 pp.

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