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Pomacea canaliculata. (Lamarck, 1819) 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 ...
The reproductive system of marine gastropods such as those from class Opisthobranchia and order Archaeogastropoda from the class Prosobranchia, is a continuous cycle of alternating male and female reproductive role prevalence. Immediately after spawning in late summer, the predominance of the female reproductive functions are terminated and ...
Diversity [ 1 ][ 3 ] 105–170 freshwater species; 9 genera; more than 150 nominal species. Synonyms. Pilidae. 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.
Pomacea bridgesii. Pomacea bridgesii, common name 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. These snails were most likely introduced to the United States through the aquarium trade.
Pomacea (Effusa) Jousseaume, 1889. Pomacea (Pomacea) Perry, 1810. Pomacea (Surinamia) Clench, 1933. 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.
P. acuta is a self-fertile snail that can undergo either sexual reproduction or self-fertilization. Noel et al. [12] experimentally tested whether accumulation of deleterious mutations is avoided either by inbreeding populations of the snail (undergoing self-fertilization), or in outbreeding populations undergoing sexual reproduction.
Shell description. Five views of a shell of Pomacea paludosa. This species is the largest freshwater gastropod native to North America. [3] The shell is globose in shape. The whorls are wide, the spire is depressed, and the aperture is narrowly oval. [3] The shells are brown in color, and have a pattern of stripes.
The apple snail is a keystone species in Pantanal's ecosystem. When the wetlands are flooded once a year, the grass and other plants will eventually die and start to decay. During this process, decomposing microbes deplete the shallow water of all oxygen, suffocating larger decomposer