Molecular inferences about the genus Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae): a review

Mezzomo, Priscila; Mielniczki-Pereira, Albanin Aparecida; Sausen, Tanise Luisa; Marinho, Jorge Reppold; Cansian, Rogério Luís

doi:10.1007/s11033-020-05542-z

Cited by 3 publications

(1 citation statement)

References 164 publications

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“…Species of the genus Hypostomus seem to present an adequate model to comprehend the interplay between morphological and genetic variation. The genus has about 200 valid species distributed over the heterogeneous Neotropical landscape (Fricke et al, 2021; Mezzomo et al, 2020). However, based on the COI genetic marker, widely used in species delimitation methods and indicated as a complementary taxonomic tool (Hebert et al, 2003), the average genetic distance in Hypostomus is 3% among 151 tested species and lineages.…”

Section: Discussionmentioning

confidence: 99%

A taxonomically complex catfish group from an underrepresented geographic area: Systematics and species limits in Hypostomus Lacépède, 1803 (Siluriformes, Loricariidae) from Eastern South America

Anjos

Queiroz

Penido

et al. 2021

J Zool Syst Evol Res

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Hypostomus Lacépède, 1803, is a species‐rich and widespread fish genus from the Neotropical region, but its evolutionary history and systematics remain largely unclear. In addition, species from regions with high levels of species richness and endemism such as the Northeastern Mata Atlântica (NMA) and São Francisco (SF) hydrographic freshwater ecoregions are underrepresented in phylogenetic studies so far. In this study, we performed a broad sampling of Hypostomus in NMA and SF to investigate the interspecific boundaries and phylogenetic relationships using a multilocus approach based on one mitochondrial and three nuclear markers. Seven genetic groups were found for both ecoregions, in addition to one lineage exclusive to the SF represented by populations of the species Hypostomus velhochico. Moreover, multilocus analyses validated 16 formally described species and two new lineages for the NMA and SF ecoregions, as well as putative cases of species complexes. In general, lineages with independent evolutionary histories were revealed within the same ecoregion alongside genetically related groups between NMA, SF, and other ecoregions. These data reinforce the intricate scenario of this group of Neotropical fish and are useful to outline further phylogeographic studies in Hypostomus.

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Section: Discussionmentioning

confidence: 99%

A taxonomically complex catfish group from an underrepresented geographic area: Systematics and species limits in Hypostomus Lacépède, 1803 (Siluriformes, Loricariidae) from Eastern South America

Anjos

Queiroz

Penido

et al. 2021

J Zool Syst Evol Res

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Identification of cryptic species in allopatric populations of Hypostomus tietensis (Siluriformes: Loricariidae) through cytogenetics analyses

et al. 2022

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Hypostomus is the most specious genus of Hypostominae, composed of several species with high intraspecific morphological and color pattern variation, making their identification a complex issue. One of the species with problematic identification is Hypostomus tietensis that was described from a single specimen, resulting in uncertainties about its color pattern and correct identification. To assist in this context, cytogenetic analyzes were carried out in three putative populations of H. tietensis from the Upper Paraná River basin, one of them from the type locality. The three populations showed considerable cytogenetic differences, with 2n = 72 chromosomes for the population from the type locality and 2n = 76 chromosomes for the others. Terminal NORs were detected (Ag- and 18S rDNA-FISH), being simple for the type locality population (acrocentric pair 23, long arm) and the Pirapó River (subtelocentric pair 11, short arm), and multiple for Do Campo River (subtelocentric pairs 11 and 12, short and long arm, respectively). C-banding was efficient in differentiating the type locality population from the others. Cytogenetic data revealed that populations from Pirapó and Do Campo rivers, although treated until now as Hypostomus aff. tietensis, represent a cryptic species, and those morphological analyses are necessary to differentiate and for describing this new species.

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Topotype-Based Chromosomal Diversity among Five Species of Freshwater Armored Catfishes in the Hypostomus auroguttatus Supergroup (Actinopterygii: Siluriformes)

et al. 2022

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Molecular inferences about the genus Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae): a review

Cited by 3 publications

References 164 publications

A taxonomically complex catfish group from an underrepresented geographic area: Systematics and species limits in Hypostomus Lacépède, 1803 (Siluriformes, Loricariidae) from Eastern South America

A taxonomically complex catfish group from an underrepresented geographic area: Systematics and species limits in Hypostomus Lacépède, 1803 (Siluriformes, Loricariidae) from Eastern South America

Identification of cryptic species in allopatric populations of Hypostomus tietensis (Siluriformes: Loricariidae) through cytogenetics analyses

Topotype-Based Chromosomal Diversity among Five Species of Freshwater Armored Catfishes in the Hypostomus auroguttatus Supergroup (Actinopterygii: Siluriformes)

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