Distribution extension of Hypostomus uruguayensis (Siluriformes: Loricariidae) in Argentina and first record for Bolivia. Molecular, morphology and biogeography data

Costa, Silvia Yasmin Lustosa; Bogan, Sergio; Queiroz, Luiz Jardim de; Montoya‐Burgos, Juan I.; Paracampo, Ariel Hernán; Maiztegui, Tomás; Cardoso, Yamila Paula

doi:10.11646/zootaxa.4996.1.12

Cited by 2 publications

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“…During the past few years, several collecting trips have been made to the upper Bermejo basin in north‐western Argentina, revealing the presence of at least 15 previously unrecorded or new species, such as Andromakhe latens (Mirande et al ., 2004), Hypostomus boulengeri (Eigenmann & Kennedy 1903) (in Alonso et al ., 2016; Cardoso et al ., 2016), Hypostomus cochliodon Kner 1854 (in Cardoso et al ., 2012; Terán et al ., 2016), H. uruguayensis Reis, Weber & Malabarba 1990 (in Lustosa‐Costa et al ., 2021), Farlowella azpelicuetae Terán et al ., 2019, and Jenynsia sulfurica Aguilera et al ., 2019, among others. Additionally, during these expeditions some specimens of Imparfinis were collected which were not assignable to either of the two species previously recorded for Argentina, and which present several morphological and meristic characteristics that relate them instead to Imparfinis guttatus (Pearson, 1924).…”

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confidence: 99%

An integrative approach method reveals the presence of a previously unreported species of Imparfinis Eigenmann and Norris 1900 (Siluriformes: Heptapteridae) in Argentina

Aguilera

Terán

Mirande

et al. 2022

Journal of Fish Biology

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Specimens of Imparfinis were recently collected in north-western Argentina from the Bermejo River basin (Salta and Jujuy Provinces), del Valle River (Salta Province) and Horcones River (Santiago del Estero Province). An integrative approach to taxonomy, combining a detailed morphological study and molecular phylogenetic analyses, was applied to determine the species identity of these specimens. A principal components analysis of morphological data clustered the specimens from north-western Argentina and from the Amazon basin, indicating a close morphological resemblance. Also, a molecular phylogenetic analysis showed populations of I. guttatus from Argentina and Peru forming a clade. According to the conducted haplotype network analysis these populations are distinct in two mutations. Thus, in the absence of morphological or molecular data indicating the contrary, the combined method supports the identity of the specimens from the tributaries of the Paraguay River in Argentina as I. guttatus, whose type locality is in the upper Beni River basin in Bolivia. This contribution is also the first record for this species from Argentina. The disjunct distribution of I. guttatus provides new evidence reinforcing the hypothesis for the origin of the Paraguayan ichthyofauna. We also provide an approach to the phylogenetic relationships of Imparfinis in Heptapteridae.

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