Tonna dolium   (Linnaeus,  1758) (Sea Snail)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Mollusca
Class: Gastropoda
Order:Littorinimorpha
Family:Tonnidae

Image copyrights: Eddie Hardy

Description
Size: 50-150 mm.
Length: 23.20-76.45 mm.
Diameter: 16.90-67.90 mm.
Maximum height of the aperture: 19.45-71.50 mm.

Color: White, brown, pale bluish white, the principal ribs being marked with a bold pattern of alternating patches of white and dark yellowish brown.

Thin, globose, impressed suture, whorls with flat bands between fine ridges, very large aperture, thin outer lip. The surface is ornamented with strong, raised , widely spaced, spiral ribs and with much minor, secondary spiral ribs in the interstices between the principal ribs; the median one of the finer ribs is usually slightly stronger than the rest, but yet much weaker than the main ribs. The columella is more or less straight and obliquely striated. The aperture is very wide and its interior marked by spiral depressions which correspond to the external ribs.


Synonym (s)
Buccinum dolium Linnaeus, 1758
Dolium maculatum Lamarck, 1845
Tonna maculatum Lamarck, 1845
Buccinum dolium Linne, 1758
Dolium maculatum Reeve, 1849
Dolium maculatum Vredenburg, 1919
Tonna dolium Crichton, 1941
Tonna dolium Gravely, 1942
Tonna dolium Linnaeus, 1758
Tonna dolium Cernohorsky, 1972
Tonna dolium Mookherjee, 1985
Buccinum dolium Linnaeus, 1758
(Basionym)
Buccinum dolium var. A Dillwyn, 1817
Cadium dolium Link, 1807
Cadus cassis Roding, 1798
Cadus dolium Roding, 1798
Dolium cassis Morch, 1853
Dolium costatum var. maculatum Tryon, 1885
Dolium maculatum Schroter in Martini, 1788

Common Name (s)
• Spotted Tun
Economic Importance and Threats
Importance:  Commercial
(For decoration, ornamental molluscs.)

Ecology
Habitat:  Demersal, Sandy, Coastal
Trophic Level:  Secondary Consumer
Prey:  Carnivores

Biogeography


• Tamil Nadu, Shingle Island INDIA
• Tamil Nadu, Shingle Island (Lat: 9.23) (Long: 79.23) INDIA
• Orissa, Mahanadi Estuary (Lat: 20.32) (Long: 86.75) INDIA
• Maharashtra, Mumbai (Lat: 18.98) (Long: 72.83) INDIA
• West Bengal, Digha beach (Lat: 21.65) (Long: 87.63) INDIA
• West Bengal, Digha Coast (Lat: 21.61) (Long: 87.53) INDIA
• Tamil Nadu, Parangipettai Coast (Lat: 11.48) (Long: 79.77) INDIA
• Tamil Nadu, Pamban (Lat: 9.25) (Long: 79.33) INDIA
• Tamil Nadu, Parangipettai Coast INDIA
• Tamil Nadu, Agasthiampalli INDIA (Record: 08/02/1962)
• Tamil Nadu, Kodikkarai INDIA (Record: 16/02/1968)
• Tamil Nadu, Vedaranyam INDIA (Record: 18/02/1968)
• Tamil Nadu, Mallipattinam INDIA (Record: 13/01/1978)
• Tamil Nadu, Krusadai Island INDIA
• Karachi PAKISTAN
• INDONESIA
• West Bengal, Digha INDIA (Record: 04/09/1964, 22/09/1979, 12/07/1984)
• West Bengal, Medinipur INDIA
• West Bengal, North 24 Parganas INDIA
• West Bengal, South 24 Parganas INDIA
• Tamil Nadu INDIA
• PAKISTAN
• West Bengal, New Digha INDIA (Record: 07/2000-06/2001)
• West Bengal, Junput INDIA (Record: 07/2000-06/2001)
• Tamil Nadu, Gulf of Mannar INDIA
• Andhra Pradesh, Kakinada Bay INDIA
• Orissa, Chandipur INDIA (Record: 21/01/1972)
• Tamil Nadu, Chennai INDIA
• Tamil Nadu, Pamban INDIA
• Maharashtra, Mumbai INDIA
• Andaman and Nicobar Islands, Nicobar Islands INDIA
• Orissa, Talburai INDIA (Record: 03/11/1962-06/11/1962)
• Tamil Nadu, Vellar Estuary INDIA
• Tamil Nadu, Dhanushkodi INDIA
• West Bengal, Sandheads INDIA
• West Bengal, Gona INDIA (Record: 18/09/1983)
• INDIA
• Tamil Nadu, Kilakarai INDIA
• Kerala, Neendakara INDIA
• Kerala, Kochi, Sakthikulangara INDIA
• West Bengal, Digha Coast INDIA

Literature Source(s)
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  • Sealifebase Available at - http://www.sealifebase.org/
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Page last updated on:2011-12-14

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