Biogeography and species delimitation of the rheophilic suckermouth catfish genus <i>Pseudolithoxus</i> (Siluriformes: Loricariidae), with the description of a new species from the Brazilian Amazon

Collins, Rupert A.; Bifi, Alessandro Gasparetto; Oliveira, Renildo Ribeiro de; Ribeiro, Emanuell Duarte; Lujan, Nathan K.; Py‐Daniel, Lúcia H. Rapp; Hrbek, Tomas

doi:10.1080/14772000.2018.1468362

Cited by 9 publications

(3 citation statements)

References 46 publications

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“…We also observed that the Aripuanã River is structured with respect to the Purus and Madeira, its P. trigonatus being most similar to P. trigonatus of the Negro River basin, although the Aripuanã is one of the tributaries of the right margin of the Madeira River. This biological connection between the Aripuanã and Negro river basins is intriguing, but has been observed in fishes as well (e.g., Amado, Hrbek & Farias, 2011 ; Collins et al, 2018 ; Machado et al, 2018 ), suggesting a recent connection of these two basins.…”

Section: Discussionmentioning

confidence: 62%

Evidence of cryptic lineages within a small South American crocodilian: the Schneider’s dwarf caimanPaleosuchus trigonatus(Alligatoridae: Caimaninae)

Bittencourt

Campos

Muniz

et al. 2019

PeerJ

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Schneider’s dwarf caiman Paleosuchus trigonatus is one of the smallest living crocodilians. Due to its broad distribution, cryptic behavior, and small home range, the species is well suited for the study of phylogeographic patterns on a continental scale. Additionally, this species is under threat due to habitat loss, trade and harvest, but is considered at low conservation risk by the IUCN. In the present study we test the hypothesis that P. trigonatus is comprised of geographically structured lineages. Phylogenetic reconstructions of the mitochondrial cytochrome b gene and single locus species discovery methods revealed the existence of two well-supported lineages within P. trigonatus—an Amazonian and Guianan lineage. Fossil calibrated divergence of these lineages was estimated to have occurred in the Late Miocene (7.5 Ma). The hypothesis that the Atlantic coast drainages might have been colonized from the southeast or central Amazon is supported by demographic metrics and relatively low genetic diversity of the Coastal and upper Branco populations when compared to the Amazon basin populations. The Amazon basin lineage is structured along an east-west gradient, with a sharp transition in haplotype frequencies to the east and west of the Negro and Madeira rivers. These lineages are already under anthropogenic threat and, therefore, are conservation dependent. Recognition of these lineages will foster discussion of conservation future of P. trigonatus and these lineages.

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Section: Discussionmentioning

confidence: 62%

Evidence of cryptic lineages within a small South American crocodilian: the Schneider’s dwarf caimanPaleosuchus trigonatus(Alligatoridae: Caimaninae)

Bittencourt

Campos

Muniz

et al. 2019

PeerJ

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“…South American ichthyofauna is the most diverse on the planet, although its diversity is underestimated, with about 42% of Neotropical freshwater fish species still to be formally described (Reis et al ., 2016). Recent molecular studies have revealed a large number of previously unknown evolutionary lineages in Neotropical fishes, suggesting that cryptic diversity is common (Arruda et al ., 2019; Collins et al ., 2018; Machado et al ., 2018; Ximenes et al ., 2021). Despite advances in studies of the Amazon ichthyofauna, the number of fish species remains uncertain.…”

Section: Introductionmentioning

confidence: 99%

Multilocus approach reveals distinct evolutionary units of the South American apapa Pellona flavipinnis (Valenciennes, 1837) (Clupeiformes, Pristigasteridae)

Ximenes

Machado

Hernández-Ruz

et al. 2023

Journal of Fish Biology

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The discovery and characterization of cryptic diversity is important for conservation and management, especially for ichthyofauna, whose diversity is underestimated and understudied. Cryptic diversity is especially common in widely distributed species, and Pellona flavipinnis is one such species. Thus, the aim of the present study was to investigate and test whether P. flavipinnis harbours cryptic diversity. In this study we used the COI and control region sequences and microsatellite loci of 86-114 specimens from 11-12 locations throughout the Amazon basin, depending on the molecular marker used. We also included two COI GenBank sequences from the type locality of the species, the Paraná River. The results from COI sequences showed that P. flavipinnis from the Amazon basin presented two spatially structured lineages differentiated from P. flavipinnis from the Paraná River by 10.6%-9.8% (depending on the lineages) and 45 mutational steps. The genetic distance between the Amazon lineages was 2.4% using COI, with high population differentiation values (Ф ST = 0.8686 and Ф ST = 0.8483 for COI and control region, respectively). Among the five species delimitation methods employed, three indicated two lineages in P. flavipinnis in the Amazon basin, and all five methods indicated that the Amazonian lineages are different from that of Paraná. Results from microsatellite loci also showed that P. flavipinnis from the Amazon basin is composed of two evolutionary units. The results of 13 morphometric measurements indicated that there are no differences in shape between the P. flavipinnis lineages in the Amazon basin. The present findings suggest that there are two sympatric lineages of P. flavipinnis in the Amazon basin.

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“…Species delimitation studies have challenged the number of recognized species in several otophysan groups (García-Melo et al, 2019;Machado et al, 2017Machado et al, , 2018Mateussi et al, 2017Mateussi et al, , 2019Melo et al, 2016aMelo et al, , 2018Serrano et al, 2019;Silva et al, 2013). Subsequent taxonomic papers describing the hidden diversity exemplify a real progress (Guimarães et al, 2019;Mateussi et al, 2018;Melo et al, 2016b;Melo & Oliveira, 2017;Silva et al, 2016) with several addressing loricariids such as Ancistrus (Prizon et al, 2017), Corymbophanes (Lujan et al, 2020), Hypostomus (Anjos et al, 2020;de Queiroz et al, 2020), Neoplecostomus (Roxo et al, 2015), Pareiorhaphis (Fagundes et al, 2020), Pseudolithoxus (Collins et al, 2018), Rineloricaria (Costa- and Schizolecis (Souza et al, 2018). Those molecular studies along with time-calibrated phylogenies have been used as a framework for biogeographic assumptions for coastal and inland loricariid taxa across the Serra do Mar mountain range in the Atlantic coast of Brazil (Roxo et al, 2014(Roxo et al, , 2019.…”

mentioning

confidence: 99%

Molecular and morphological diversity in species of Kronichthys (Teleostei, Loricariidae) from Atlantic coastal rivers of Brazil

Souza

Silva

Ochoa

et al. 2020

Journal of Fish Biology

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The Neotropical catfish genus Kronichthys contains three species distributed along coastal rivers of southern and southeastern Brazil. Although phylogenetic hypotheses are available, the molecular and morphological diversity and species boundaries within the genus remain unexplored. In this study, the authors generated mitochondrial data for 90 specimens combined with morphometric and meristic data to investigate species diversity, species boundaries and putative morphological signatures in Kronichthys. Phylogenetic and species delimitation results clearly show the presence of four genetic lineages, three within Kronichthys heylandi along the coast from Rio de Janeiro to southern São Paulo and a single lineage encompassing both the nominal species Kronichthys lacerta and Kronichthys subteres from the Ribeira de Iguape basin to Santa Catarina in southern Brazil. Nonetheless, morphological data show overlapped ranges in morphometrics and a definition of only two morphotypes, with clear phenotypic differences in the teeth number: K. heylandi differs from K. subteres + K. lacerta by the higher number of premaxillary teeth (30-52 vs. 19-28) and higher number of dentary teeth (28-54 vs. 17-28). Headwater captures and connections of paleodrainages because of sea-level fluctuations represent the two major biogeographic processes promoting species diversification and lineage dispersal of Kronichthys in the Atlantic coastal range of Brazil.

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Biogeography and species delimitation of the rheophilic suckermouth catfish genus Pseudolithoxus (Siluriformes: Loricariidae), with the description of a new species from the Brazilian Amazon

Cited by 9 publications

References 46 publications

Evidence of cryptic lineages within a small South American crocodilian: the Schneider’s dwarf caimanPaleosuchus trigonatus(Alligatoridae: Caimaninae)

Evidence of cryptic lineages within a small South American crocodilian: the Schneider’s dwarf caimanPaleosuchus trigonatus(Alligatoridae: Caimaninae)

Multilocus approach reveals distinct evolutionary units of the South American apapa Pellona flavipinnis (Valenciennes, 1837) (Clupeiformes, Pristigasteridae)

Molecular and morphological diversity in species of Kronichthys (Teleostei, Loricariidae) from Atlantic coastal rivers of Brazil

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