| Pomacea haustrum | |
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| Apertural view of a shell of Pomacea haustrum | |
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| Subgenus: | Pomacea |
| Species: | P. haustrum |
| Binomial name | |
| Pomacea haustrum | |
Pomacea haustrum, common name the titan applesnail, is a species of large freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the applesnails.
Pomacea haustrum was originally described under the name Ampullaria haustrum by Lovell Augustus Reeve in his book Conchologia Iconica , in 1856. [1]
In Reeve's original text, (the type description) reads as follows:
Species 23. (Mus. Cuming.)
AMPULLARIA HAUSTRUM. Amp. testâ compressè ovatâ, ventricosissimâ, vix umbilicatâ, spirâ parvâ, subimmersâ, anfractibus ad suturam impressè canaliculatis, deinde convexis; sordidè olivaceâ, striatâ et malleatâ, fasciis angustis pallidè virescentibus cingulatâ; aperturâ pyrifomi-oblongâ, peramplâ; fauce livida- purpureâ.
THE SCOOP AMPULLARIA. Shell compressly ovate, very ventricose, scarcely umbilicated, spire small, rather immersed, whorls impressly channelled at the suture, then convex; dull olive, striated and malleated, encircled with narrow faint green bands; aperture pyriformly oblong, very large; livid purple in the interior.
Hab. River Maranon, Brazil.
This fine species belongs to the same type as A. insularum , D ́Orbigny, from La Plata. Its chief points of difference consist in being less distinctly umbilicated,
and in having a much larger and more expanded aperture.
It is difficult to identify even the general region of the type locality for this species. [2] The type locality was given as the Río Marañón, Brazil, but this river is in Peru, joining with the Rio Ucayali above Iquitos to become the Rio Solimões, which in turn joins with the Rio Negro to become the Amazon River of Brazil. [2] Some of the first Europeans to explore the region in the sixteenth century, however, referred to the Amazon River as El Río Marañón, and some nineteenth century maps refer to the entire Amazon as the Marañón. [2] It is likely that the Río Marañón of one collector was not the same as the Río Marañón of another.
It was considered a synonym of Pomacea canaliculata by Thompson (1997) [3] based on shell morphology, but tentatively retained as a separate species by Cowie & Thiengo, [4] because of its reported production of green eggs. [2] Phylogenetic analyses by Rawlings et al. (2007) confirmed its species status. [2]
Pomacea haustrum is a large species that has a large globular shell with a channeled suture. [5] [2]
The indigenous distribution of Pomacea haustrum is Bolivia, Brazil and Peru in South America. [5] [2]
The nonindigenous distribution includes the United States: Loxahatchee National Wildlife Refuge waters in Palm Beach County, Florida. [2] Pomacea haustrum were discovered in the late 1970s in Palm Beach County Florida, and have not spread appreciably in 30 years. [2] This is the only known area where this species is established in the United States. [2] The initial introduction in the United States was probably from aquarium release, aka "aquarium dumping". [5] Pomacea haustrum is currently of relatively minor concern in the U.S., given its failure to spread beyond Palm Beach County after 30 years or more in Florida. [2] However, many species have maintained limited distributions, sometimes for decades, before becoming invasive. [2]
This species lives in freshwater rivers. [5]
Populations of Pomacea haustrum in Florida produce bright green egg masses consisting of individual eggs approximately 3–5 mm in size compressed into polygonal shapes, giving the egg mass an irregular honeycombed appearance. [2] Since other Pomacea species also produce green eggs, this character is insufficient to verify this species as Pomacea haustrum. [2] It lays its eggs in clutches above the water level.
Ampullariidae, common name the apple snails, is a family of large freshwater snails, aquatic gastropod mollusks with a gill and an operculum. This family is in the superfamily Ampullarioidea and is the type family of that superfamily.
Marisa cornuarietis, common name the Colombian ramshorn apple snail, is a species of large freshwater snail with an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snail family.
Pomacea bridgesii, common names the spike-topped apple snail or mystery snail, is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Ampullariidae.
Pila ampullacea, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails.
Pomacea is a genus of freshwater snails with gills and an operculum, aquatic gastropod mollusks in the family Ampullariidae, the apple snails. The genus is native to the Americas; most species in this genus are restricted to South America.
Pomacea canaliculata, commonly known as the golden apple snail or the channeled apple snail, is a species of large freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails. South American in origin, this species is considered to be in the top 100 of the "World's Worst Invasive Alien Species". It is also considered as about the 40th the worst alien species in Europe and the worst alien species of gastropod in Europe.
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.
Pomacea paludosa, common name the Florida applesnail, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails.
Pomacea maculata is a species of large freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails.
Pomacea aurostoma is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails.
Pomacea baeri is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails.
Pomacea catamarcensis is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails.
Pomacea cousini is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails.
Pomacea eximia is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails.
Pomacea hollingsworthi is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails.
Pomacea pealiana is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails.
Pomacea quinindensis is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails.
Pomacea reyrei is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails.
Pomacea vexillum is a South American species of freshwater snail with gills and an operculum, an aquatic gastropod mollusc in the family Ampullariidae, the apple snails.
Pomacea scalaris is a species of freshwater snail of the Ampullariidae family, described by Alcide d'Orbigny in 1835.
This article incorporates a public domain work of the United States Government from the reference [5] and CC-BY-2.0 text from the reference. [2]
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