A molecular contribution to the controversial taxonomical status of some freshwater snails (Caenogastropoda: Rissooidea, Cochliopidae) from the Central Andes desert to Patagonia
AUTOR(ES)
Koch, Eduardo, Martin, Stella M., Ciocco, Nestor F.
FONTE
Iheringia, Sér. Zool.
DATA DE PUBLICAÇÃO
2015-03
RESUMO
For over 40 years malacologists have been discussing the taxonomical status of Heleobia species, an enigmatic genus from Cochliopidae family (Caenogastropoda: Rissooidea). As with other rissooidean families, the considerable character convergence and the paucity of anatomical synapomorphies has proved to be a problem in resolving cochliopid phylogenetic relations and establishing the validity of several nominal cochliopid species. Here we present a molecular contribution to solve the taxonomical status of one of the most abundant Southern South America cochliopid genera which has many endemic species. We report molecular evidence that supports three of the four Heleobia groups described for this region, the "australis", "parchappii" and "piscium" groups. The fourth, the "hatcheri" group, belongs not to Heleobia but to a different genus which itself should not be considered as part of the family Cochliopidae but closely related to genus Potamolithus Pilsbry & Rush, 1896.
Documentos Relacionados
- Temporal variations of larval digenean assemblages parasitizing Heleobia parchappii (Mollusca: Cochliopidae) in two shallow lakes from the Buenos Aires province, Argentina
- Ecology of the non-native snail Sinotaia cf quadrata (Caenogastropoda: Viviparidae). A study in a lowland stream of South America with different water qualities
- Aegla chilota, new species of anomuran freshwater crab from Chiloé Island, western Patagonia
- Further studies on the molecular systematics of Biomphalaria snails from Brazil
- Crescimento individual de Heleobia piscium em populações naturais (Gastropoda: Cochliopidae) da Reserva Natural de usos múltiplos Ilha Martín García, Buenos Aires, Argentina