Tonna dunkeri, common name boxing glove, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.[2]
| Tonna dunkeri | |
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| Shell of Tonna dunkeri (specimen at MNHN, Paris) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Tonnidae |
| Genus: | Tonna |
| Species: | T. dunkeri
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| Binomial name | |
| Tonna dunkeri | |
| Synonyms[2] | |
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Description
editThe length of the shell attains 125 mm. [3]
The shell is moderate to large, fragile and globular in shape. It features a very large aperture and a low spire. The surface is sculpted with well-developed, broad, flat-topped spiral cords, and the base has a pronounced siphonal notch. Adult animals lack an operculum. This species is highly variable, with both shallow- and deep-water forms. On the Agulhas Bank, shells tend to be more globular, with a lower spire, a pronounced shoulder, and a slightly sunken suture. [3]
The color of fresh shells is light brown to orange-brown. The ribs are marked with irregular white blotches, bordered by darker brown bars. [3]
Distribution
editThis marine species occurs off South Africa, off the Agulhas Bank and East coast at depths between 50 m and 100 m; also off Madagascar.
References
edit- ^ Hanley. 1859, Proc. Zool. Soc. London, 1859. World Register of Marine Species, Retrieved 9 July 2010.
- ^ a b Tonna dunkeri (Hanley, 1860). Vos, C. (2009). Tonna dunkeri (Hanley, 1860). Accessed through the World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=410246 on 9 July 2010 .
- ^ a b c Herbert, D.G., Jones, G.J. & Atkinson, L.J. (2018). Phylum Mollusca. In: Atkinson, L.J. and Sink, K.J. (eds) Field Guide to the Offshore Marine Invertebrates of South Africa. Pretoria: Malachite Marketing and Media. p. 289. ISBN 978-1-86868-098-6. Retrieved 17 October 2024.
{{cite book}}: CS1 maint: multiple names: authors list (link)
This article incorporates text from this source, which is available under the CC BY-SA 4.0 license.
- Hanley, S. (1860a), Descriptions of New Univalve Shells from the Collections of H. Cuming and Sylvanus Hanley. Proceedings of the Zoological Society of London, 1859 27: 429-431
- Bayer, Ch. (1937) Catalogue of the Doliidae in the Rijksmuseum van Natuurlijke Historie. Overgedrukt uit Zoologiscshe Mededelingen XX, Leiden, E. J. Brill, page(s): 38
- Kilias, R. (1962) Das Tierreich, Lieferung 77, Gastropoda / Prosobranchia: 1-63, Walter de Gruyter & Co., Berlin. page(s): 35
- Kilburn R.N. (1971). On some species of the families Tonnidae, Hipponicidae, Buccinidae, Columbariidae, Fasciolariidae, Psammobiidae and Mactridae (Mollusca) in South African waters. Annals of the Natal Museum 20(3):483-497
- Steyn, D.G. & Lussi, M. (1998) Marine Shells of South Africa. An Illustrated Collector's Guide to Beached Shells. Ekogilde Publishers, Hartebeespoort, South Africa, ii + 264 pp. page(s): 70
- Vos, C. (1999) A new Tonna Brünnich, 1772 (Gastropoda: Tonnidae) from Gulf of Aden. Gloria Maris, Vol. 38, (1–6), p. 43–47, pl. 8-9 page(s): 44
- Vos, C. (2007) A conchological Iconography (No. 13) - The family Tonnidae. 123 pp., 30 numb. plus 41 (1 col.) un-numb. text-figs, 33 maps., 63 col. pls, Conchbooks, Germany page(s): 93
External links
edit- Barnard, K. H. (1963). Contributions to the knowledge of South African marine Mollusca. Part III. Gastropoda: Prosobranchiata: Taenioglossa. i>Annals of the South African Museum 47(1): 1-199.
- Herbert, D.G., Jones, G.J. & Atkinson, L.J. (2018). Phylum Mollusca. In: Atkinson, L.J. and Sink, K.J. (eds) Field Guide to the Offshore Marine Invertebrates of South Africa. Malachite Marketing and Media: Pretoria. Pp. 249–320
