Invasion
Invasion Description
1st record: Montevideo/Uruguay/Rio de La Plata (1998, Giberto et al. 2006; Schwindt et al. 2020
Geographic Extent
Argentina/Bahia Samborombom (1999, Pastorino et al. 2000); Montevideo/Uruguay/Rio de La Plata (1998, Giberto et al. 2006); Argentina-Uruguay/Rio de Plata (1999, Pastorino et al. 2000); Punta del Este/Uruguay/Rio de La Plata (1998, Giberto et al. 2006); Rowen Bank/Argentina-Uruguay/Rio de Plata (2002, Giberto et al. 2006); Punta del Este/Uruguay/Maldonado Bay (2009, Carranza et al. 2010); Playa Hermosa/Uruguay/La Plata estuary (2008, Lanfranconi et al. 2009); Punta del Este/Uruguay/La Plata estuary (2008, Lanfranco et al. 2009); Hermenegildo Beach, Santa Vitoria do Palmar (33 32 4900 S, 53?0602800 W), to Cassino Beach (33 3104900 S, 53 05 1300 W), Rio Grande de Sur, Brazil/Atlaniitc Ocean (2017-2019, Spotorno-Oliveira et al. 2020)
Vectors
| Level | Vector |
|---|---|
| Probable | Ballast Water |
| Alternate | Natural Dispersal |
Regional Impacts
| Ecological Impact | Predation | |
| Observations indicate extensive predation by R. venosa on Mytilus edulis platensis and Brachidontes spp., in beds already depleted by pollution and over-harvesting (Carranza et al. 2010). Modelling indicates that predation by R. venosa affects populations of the native bivalves Erodona mactroides and Mactra isabelleana (Lercari and Bergamino 2011). In experiments, R. venosa from the La Plata estuary, fed on Brachidontes rodriguezii and Mytella charruana, at a mean rate of 0.88 mm per snail. Medium-sized (20-30 mm) mussels were consumed at a higher rate than larger or smaller mussels (Lanfranconi et al. 2013). | ||
| Ecological Impact | Competition | |
| Ecopath modelling suggests that predation by R. venosa negatively affects populations of the predatory fish Micropogonias furnieri, rays, and native predatory gastropods (Lercari and Bergamino 2011). | ||
| Ecological Impact | Food/Prey | |
| Rapana venosa constituted a major prey item of Loggerhead Turtles (Caretta caretta) in the Rio de la Plata estuary, constituting up to 100% of the diet (Carranza et al. 2011). | ||