Buccinastrum deforme

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Buccinastrum deforme
Buccinanops globulosus 01.jpg
A shell of Buccinanops globulosus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Family: Buccinanopsidae
Genus: Buccinastrum
Species:
B. deforme
Binomial name
Buccinastrum deforme
(Kiener, 1834)
Synonyms
  • Buccinanops deformis(P. P. King, 1832)
  • Buccinanops globulosus(Kiener, 1834)
  • Buccinanops globulosus var. elataStrebel, 1906
  • Buccinum ampullaceumDeshayes, 1844 (unnecessary substitute name for...)
  • Buccinum deformeP. P. King, 1832 (original combination)
  • Buccinum globulosumKiener, 1834

Buccinastrum deforme, common name the collared buccinum, is a species of sea snail, a marine gastropod mollusk in the family Buccinanopsidae, the Nassa mud snails or dog whelks and the like. [1]

Contents

Description

The size of the shell varies between 23 mm and 70 mm.

The ovate shell is smooth and ventricose. The spire is formed of six slightly convex whorls. The body whorl is very large and slightly canaliculated. The coloring is of a deep violet and oftentimes of a yellowish ash color, with a small white band which borders the base of each whorl of the spire. There exists also at the base of the shell, a large band of a grayish white color. Upon some specimens longitudinal whitish lines are seen, which are the vestiges of the several additions to the shell. The aperture is large and ovular. The columella is strongly arched, and upon all its length is seen a callosity of a yellowish color. The outer lip is of a reddish brown internally.

This shell is very different from other species in its form, which is globular, and its color, of a deep violet. In some specimens the spire is more elongated, and sometimes, within the shell, where it is of a paler violet, are delineated deeper bands. One only exists upon the upper whorls, and two broader upon the lowest. [2]

Distribution

This marine species occurs from Uruguay to Argentina.

Imposex

The phenomenon known as imposex, the development of nonfunctional male sexual organs in female individuals, has been observed in B. deforme. [3] This condition is triggered by exposure to organic tin compounds such as tributyltin (TBT) and triphenyltin (TPT), is irreversible, and can have severe consequences for gastropod species, ranging from individual sterilization to potential population collapse. [4] [5] Organotin compounds are commonly used as biocides and antifouling agents, added to marine paints to prevent organisms from growing on the hulls of boats and ships. [6] [7] As a result, high concentrations often accumulate in the waters around shipyards and docking areas, posing a serious threat to nearby marine life through prolonged exposure. [7] [8]

References

  1. ↑ MolluscaBase eds. (2022). MolluscaBase. Buccinastrum deforme (P. P. King, 1832). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1514657 on 2022-05-28
  2. ↑ Kiener (1840). General species and iconography of recent shells : comprising the Massena Museum, the collection of Lamarck, the collection of the Museum of Natural History, and the recent discoveries of travellers; Boston :W.D. Ticknor,1837 (described as Buccinum lamarckii)
  3. ↑ Giulianelli, Sebastián; Ruivo, Raquel; Neuparth, Teresa; Castro, Luís Filipe C.; Bigatti, Gregorio; Santos, Miguel M. (2025). "Cloning and comparative analysis of the retinoid X receptor in two marine gastropods with varying sensitivity to imposex under tributyltin contamination". Environmental Science and Pollution Research. 32 (15): 9479–9488. doi:10.1007/s11356-025-36278-7.
  4. ↑ Voss, Jn; Brown-Peterson, Nj; Delgado, Ga (2025). "Revisiting the imposex queen conch Aliger gigas near Port Everglades, Florida: demographics, histopathology, and sediment contamination". Endangered Species Research. 57: 1–7. doi:10.3354/esr01401.
  5. ↑ Leal, José H; Hulse, Carly; D'Agostino, Claire; Fogelson, Susan (2025). "First record of imposex in the horse conch, Triplofusus giganteus (Mollusca: Gastropoda: Fasciolariidae)". Bulletin of Marine Science. 101 (2): 899–900. doi:10.5343/bms.2024.0104.
  6. ↑ Ruiz, J. M.; Quintela, M.; Barreiro, R. (1998). "Tributyltin and imposex: no uncertainty shown". Marine Ecology Progress Series. 170: 293–294. Bibcode:1998MEPS..170..293R. doi:10.3354/meps170293.
  7. 1 2 Horiguchi, T.; et al. (1995). "Imposex in Japanese gastropods (Neogastropoda and Mesogastropoda): effects of tributyltin and triphenyltin from anti-fouling paints". Marine Pollution Bulletin. 31 (4–12). Oxford: 402–405. Bibcode:1995MarPB..31..402H. doi:10.1016/0025-326X(95)00133-8.
  8. ↑ Castro, Í. B.; et al. (2008). "Imposex in endemic volutid from Northeast Brazil (Mollusca: Gastropoda)" (PDF). Brazilian Archives of Biology and Technology. 51 (5). Brazil: 1065–1069. doi: 10.1590/s1516-89132008000500024 . ISSN   1516-8913.
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