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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.
Gastropods are capable of being either male or female, or hermaphrodites, and this makes their reproduction system stand out amongst many other invertebrates. Hermaphroditic gastropods possess both the egg and sperm gametes which gives them the opportunity to self-fertilize. [4] C. obtusus is a snail species of the Eastern Alps. In the ...
Physella acuta is a species of small, left-handed or sinistral, air-breathing freshwater snail, an aquatic gastropod mollusk in the family Physidae. Common names include European physa , tadpole snail , bladder snail , and acute bladder snail .
The freshwater snail Physa acuta is a self-fertile organism that can be exposed either to strong sexual selection or to self-fertilization depending on its mode of reproduction. Noel et al. [ 29 ] used Physa acuta to experimentally determine whether accumulation of deleterious mutations is avoided by inbreeding populations of the snail, as well ...
Physid snails are often introduced to an aquarium accidentally as eggs on aquatic plants. These snails are sometimes viewed as pests in aquarium tanks with fish, because the snails create waste, reproduce very often, and are very hard to remove completely.
Pleuroceridae, common name pleurocerids, is a family of small to medium-sized freshwater snails, aquatic gilled gastropod mollusks in the superfamily Cerithioidea.These snails have an operculum and typically a robust high-spired shell. Reproduction is iteroparous, and juvenile snails emerge from eggs laid on a firm surface by a gonochoristic ...
Elimia virginica belongs to the family Pleuroceridae, a group of snails that have thick, elongated shells. The operculum in this species is proteinaceous, corneous, and paucispiral and is withdrawn when the snail is active. The shells are dextral and have a very high and narrow spire, with little space in the suture (the incisions between the ...
Sexual reproduction In some species, males fertilize females through direct copulation. For example, mystery snails are sexually dimorphic, meaning they have separate males and females that must pair up to reproduce. Hermaphroditic reproduction Some freshwater snails are hermaphrodites, meaning they have both male and female reproductive organs.