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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.
Perivitellin-2 (PV2) is a pore-forming toxin present in the egg perivitelline fluid of the apple snails Pomacea maculata (PmPV2) and Pomacea canaliculata (PcPV2). This protein, called perivitellin, is massively accumulated in the eggs (~20 % total protein). As a toxin PV2 protects eggs from predators, but it also nourishes the developing snail ...
The apple snail's usual enemies are the birds limpkin and snail kite. Apple snails inhabit various ecosystems: ponds, swamps and rivers. Although they occasionally leave the water, they spend most of their time under water. Unlike the pulmonate snail families, apple snails are not hermaphroditic, but gonochoristic; i.e. they have separate sexes.
English: A Golden Apple Snail (Pomacea maculata) laying eggs on a concrete platform near a freshwater stream. Photographed near the banks of the Kallang River in Bishan-Ang Mo Kio Park, Singapore. Photographed near the banks of the Kallang River in Bishan-Ang Mo Kio Park, Singapore.
Ovorubin (PcOvo or PcPV1) is the most abundant perivitellin (>60 % total protein) of the perivitelline fluid from Pomacea canaliculata snail eggs. This glyco-lipo-caroteno protein complex is a approx. 300 kDa multimer of a combination of multiple copies of six different ~30 kDa subunits.
Pomacea maculata is a species of large freshwater snail with an operculum, an aquatic gastropod mollusk in the family Ampullariidae, the apple snails. The common name of its synonymous name Pomacea insularum is the island apple snail. Together with Pomacea canaliculata it is the most invasive species of the family Ampullariidae. [2]
The Stowers Institute has 21 different research labs seeking cures to diseases. One lab contains hundreds of apple snails — which can regrow their eyes in about 20 days.
Most studies of perivitellins have been performed in eggs of Ampullaridae, a family of freshwater snails (Caenogastropoda), notably the Pomacea genus, mostly those of Pomacea canaliculata, Pomacea scalaris and Pomacea maculata.