Redescripción de Potamolithus supersulcatus Pilsbry, 1896 (Gastropoda, Tateidae) del sur de la cuenca Del Plata

Lucía, Micaela de; Gregoric, Diego E. Gutiérrez

doi:10.11606/0031-1049.2017.57.17

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…Potamolithus is represented by 41 species, out of which 15 have Paysandú (Uruguay) as type locality; 32 are present at the Del Plata basin (Argentina, Uruguay and Brazil); five present only in Brazil (one at the San Francisco basin and four at the South Atlantic basin), while four species inhabit both Argentine Patagonia and southern Chile (Pilsbry, 1899;Pilsbry, 1911;Pilsbry, 1924;Pilsbry, 1925;Davis and Silva 1984;Simone and Moracchioli, 1994;L opez Armengol, 1985;L opez Armengol and Darrigran, 1998;Rumi et al, 2008;Núñez, 2017;de Lucía and Guti errez Gregoric, 2017a;2017b;Collado et al, 2019a). Most species of this genus have descriptions only of their shells, and only a few present anatomical or molecular studies (Davis and Silva, 1984;L opez Armengol, 1985;Simone and Moracchioli, 1994;Silva andVeitenheimer-Mendes, 2004;Wilke et al, 2013;de Lucía and Guti errez Gregoric, 2017a;2017b;Núñez, 2017). In terms of species level, the majority of Tateidae are difficult to identify by using shells alone; anatomical features or molecular data are often necessary for a more accurate identification (Collado et al, 2019a;Ponder, 2019).…”

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confidence: 99%

Phylogenetic and morphological study of the genus Potamolithus (Truncatelloidea: Tateidae) in hotspots of diversity at the Paranaense Forest, Argentina, with the addition of six new species

Lucía

Gonçalves

Santos

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Phylogenetic and morphological study of the genus Potamolithus (Truncatelloidea: Tateidae) in hotspots of diversity at the Paranaense Forest, Argentina, with the addition of six new species

Lucía

Gonçalves

Santos

et al. 2021

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Morphological and molecular analysis of cryptic native and invasive freshwater snails in Chile

Collado

Vidal

Aguayo

et al. 2019

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Species delimitation in minute freshwater snails is often difficult to perform using solely shell morphology. The problem intensifies when invasive species spread within the distribution range of morphologically similar native species. In Chile, the Truncatelloidean snails are represented by the native genera Heleobia and Potamolithu s plus the invasive mudsnail Potamopyrgus antipodarum , which can easily be confused. Using an integrative approach, we performed molecular phylogenetic analysis and studied reproductive and morphological features to identify superficially similar forms inhabiting the central area of the country. Truncatelloidean snails were identified in 40 of 51 localities sampled, 10 containing Potamopyrgus antipodarum , 23 Heleobia and 7 Potamolithus . Based on these results and previously published data, the known distribution of the mudsnail in Chile encompasses 6 hydrological basins, including 18 freshwater ecosystems. The finding of the mudsnails in several type localities of native species/subspecies of “ Heleobia ” that were not find in situ suggests species replacement or significant extinction of native fauna, a hypothesis supported by the restudy of type material that shows that endemic forms belong to the genus Potamolithu s. This study shows the usefulness of integrative taxonomy not only resolving complex taxa with cryptic morphology but also measuring the extent of an ongoing invasion.

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Diversity of Potamolithus (Littorinimorpha, Truncatelloidea) in a high-diversity spot for troglobites in southeastern Brazil: role of habitat fragmentation in the origin of subterranean fauna, and conservation status

Bichuette¹,

Trajano²

2018

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The Alto Ribeira karst area, southeastern Brazil, is a high-diversity area for troglobites. Three species of freshwater gastropodsPotamolithusoccur in the area:P.ribeirensis, only found in epigean waters at the Iporanga and Ribeira rivers;P.troglobius, which is endemic to the Areias cave system; andP.karsticus, a troglophilic species from Calcário Branco Cave and an epigean stream nearby. We investigated their distribution based on shell morphology and internal anatomy of epigean species, troglophilic populations, and troglobitic species. Distribution patterns ofPotamolithuswere compared to those of other aquatic taxa from the region (such as crustaceans and fishes). Besides the three species already described for the region, we recorded 12 additional ones, for a total of 15 species/morphs (six troglobites, seven troglophiles, and two epigean).Potamolithusspp. are restricted to micro-basins and/or caves, showing small areas of distribution and probably a high degree of endemism. Geomorphology (irregular landscape, with limestone outcrops intercalated with insoluble rocks, which probably act as geographic barriers for cave populations), paleoclimatic evidence, and ecological/biological factors, such as the low degree of mobility of these gastropods (sedentary habit), explain the distributional patterns. We observed troglomorphisms such as reduction/absence of eyes and pigmentation (body and periostracum), and a coiled intestine. Apparently, there is no cause-and-effect between miniaturization and intestine coiling forPotamolithus, in contrast to observations for other cave snails.Potamolithussnails are threatened in the region due to water pollution, uncontrolled tourism, and overcollection.

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Redescripción de Potamolithus supersulcatus Pilsbry, 1896 (Gastropoda, Tateidae) del sur de la cuenca Del Plata

Abstract: The genus Potamolithus Pilsbry, 1896 (Gastropoda; Tateidae)

Cited by 3 publications

References 17 publications

Phylogenetic and morphological study of the genus Potamolithus (Truncatelloidea: Tateidae) in hotspots of diversity at the Paranaense Forest, Argentina, with the addition of six new species

Phylogenetic and morphological study of the genus Potamolithus (Truncatelloidea: Tateidae) in hotspots of diversity at the Paranaense Forest, Argentina, with the addition of six new species

Morphological and molecular analysis of cryptic native and invasive freshwater snails in Chile

Diversity of Potamolithus (Littorinimorpha, Truncatelloidea) in a high-diversity spot for troglobites in southeastern Brazil: role of habitat fragmentation in the origin of subterranean fauna, and conservation status

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