Pomacea diffusa

Pomacea diffusa, common name the spike-topped apple snail, is a species of freshwater snail, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails. The snail Pomacea diffusa can't carry the Schistosoma mansoni

Pomacea diffusa
Pomacea diffusa shell
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
informal group Architaenioglossa
Superfamily:
Ampullarioidea
Family:
Ampullariidae
Subfamily:
Ampullariinae
Tribe:
Ampullariini
Genus:
Pomacea
Species:
P. diffusa
Binomial name
Pomacea diffusa
Blume, 1957
Apple snail

Taxonomy

Pomacea diffusa was originally described as a subspecies of Pomacea bridgesii.[1] Pain (1960)[2] argued that Pomacea bridgesii bridgesii was a larger form with a restricted range, with the smaller Pomacea bridgesii diffusa being the common form throughout the Amazon Basin (Brazil, Peru, Bolivia).[1] Cowie and Thiengo (2003)[3] suggested that the latter might deserve full species status, and the two taxa have been confirmed as distinct species by genetic analyses.[1]

Distribution

The type locality of Pomacea diffusa is in the city of Santa Cruz de la Sierra, Bolivia, although the species is widespread throughout the Amazon Basin.[1]

Non-indigenous distribution of Pomacea diffusa include:

Description
Two views of a shell of Pomacea diffusa

Pomacea diffusa is known as the spike-topped apple snail, because of its relatively raised spire.[1] It lacks a channeled suture, and overlaps in size with the Pomacea paludosa.[1]

An egg cluster of Pomacea diffusa

The egg masses have an irregular honeycombed appearance, like those of Pomacea haustrum, but are smaller and have a tan to salmon color, although the egg masses are white when freshly laid.[1]

Human use

It is a part of ornamental pet trade for freshwater aquaria.[8]

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References

This article incorporates CC-BY-2.0 text from the reference.[1]

  1. Rawlings, Timothy A.; Hayes, Kenneth A.; Cowie, Robert H.; Collins, Timothy M. (2007). "The identity, distribution, and impacts of non-native apple snails in the continental United States". BMC Evolutionary Biology. 7: 97. doi:10.1186/1471-2148-7-97. ISSN 1471-2148. PMC 1919357. PMID 17594487.
  2. Pain, T. (1960). "Pomacea (Ampullariidae) of the Amazon River system". Journal of Conchology. 24: 421–443.
  3. Cowie, R. H.; Thiengo, S. C. (2003). "The apple snails of the Americas (Mollusca: Gastropoda: Ampullariidae: Asolene, Felipponea, Marisa, Pomacea, Pomella): a nomenclatural and type catalog". Malacologia. 45: 41–100.
  4. Thompson, F. G. (1984). Freshwater snails of Florida: A manual for identification. Gainesville: University of Florida Press.
  5. Clench, W. J. (1966). "Pomacea bridgesi (Reeve) in Florida". Nautilus. 79: 105.
  6. Howells R. G., Burlakova L. F., Karatayev A. Y., Marfurt R. K. & Burks R. L. (2006). "Native and introduced Ampullariidae in North America: History, status, and ecology. In Global Advances in the Ecology and Management of Golden Apple Snails". In: Joshi R. C., Sebastian L. S., Muñoz N. E. (2006). Philippine Rice Research Institute. 2006: 73-112.
  7. Perera, Antonio Alejandro Vázquez; Valderrama, Susana Perera (2010). "Endemic Freshwater Molluscs of Cuba and Their Conservation Status". Tropical Conservation Science. 3 (2): 190–199. doi:10.1177/194008291000300206.
  8. Ng, T. H., Tan, S. K., Wong, W. H., Meier, R., Chan, S. Y., Tan, H. H., & Yeo, D. C. (2016). "Molluscs for sale: assessment of freshwater gastropods and bivalves in the ornamental pet trade". PLoS ONE 11(8): e0161130. doi:10.1371/journal.pone.0161130
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