Ampullariidae, whose members are commonly known as apple snails, is a family of large freshwater snails that includes the mystery snail species. They are aquatic gastropod mollusks with a gill and an operculum. These snails simultaneously have a gill and a lung as functional respiratory structures, which are separated by a division of the mantle cavity. This adaptation allows these animals to be amphibious. Species in this family are considered gonochoristic, meaning that each individual organism is either male or female.
Pila is a genus of large freshwater snails with an operculum, African and Asian apple snails, aquatic gastropod mollusks 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 ranked as the 40th worst alien species in Europe and the worst alien species of gastropod in Europe.
Pomacea diffusa, common name the spike-topped apple snail or Mystery 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.
Marisa is a genus of freshwater snails 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.
Asolene is a genus of freshwater snails with an operculum, aquatic gastropod mollusks 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 in the family Ampullariidae, the apple snails. Its possible synonymy with Pomacea glauca is unresolved.
The perivitellinefluid is an extracellular fluid found in the eggs of most gastropods and constitutes the main source of nutrition and defense for their embryos. It replaces the egg yolk of other animals, which in snail eggs is reduced to non-nutritive proteinaceous granules with putative enzymatic function.
Pomacea scalaris is a species of freshwater snail of the Ampullariidae family. It was described by Alcide d'Orbigny in 1835. It is found in Bolivia, Paraguay, Argentina, Brasil, and Uruguay. It is invasive in Taiwan. First documented in 1989, it was possibly introduced alongside Pomacea canaliculata illegally brought to the country for aquaculture.
Pomacea columellaris is a South American species of freshwater snail in the apple snail family, Ampullariidae.
Pomacea decussata is a species of freshwater snail in the family Ampullariidae.
Pomacea auriformis is a species of freshwater snail in the family Ampullariidae, described by Lovell Augustus Reeve in 1856 as Ampullaria auriformis. Its distribution is along the Caribbean coast of Central America. There has been debate over whether this species may be a subspecies of Ampullaria hopetonensis.
Pomacea occulta is a species of freshwater snail in the family Ampullariidae. Previously misidentified as the cryptically similar Pomacea maculata, P. occulta was differentiated by Yang and Yu in 2019 using DNA barcoding and molecular systematics.
Pomacea fasciata is a freshwater snail in the Ampullariidae family. It is known from Jamaica, Guadeloupe, and Hispaniola. It lays white eggs.
Pomacea prunella is a species of freshwater snail in the family Ampullariidae. It is known from Brazil and French Guiana. Unlike other New World Ampullariids, P. prunella has a calcified, rather than corneous, operculum.
