Through the looking-glass: shell morphology, anatomy and mating behavior of reversed Pomacea canaliculata (Caenogastropoda, Ampullariidae)
- Tamburi, Nicolas Eduardo
- Burela, Silvana
- Carrizo, Martín Andrés
- Martín, Pablo Rafael
DOIAbstract
Snails exhibit a primary left-right asymmetry that appears during the first cleavages of the eggs, and a secondary asymmetry, related to the coiling of the shell. Most species are constituted by either dextral or sinistral morphs (enantiomorphs) while individuals with reversed primary asymmetry are extremely rare. Freshwater snails of the family Ampullariidae are normally dextral enantiomorphs with planispiral, hyperstrophic or orthostrophic shells. Pomacea canaliculata, a well-studied species because of its invasive status, shows dextral primary asymmetry and orthostrophic growth that results in clock-wise shells. Despite the great number of studies focused on P. canaliculata, only two specimens with reversed asymmetry have been hitherto r...
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