Two new species of <i>Heptapterus</i> (Siluriformes: Heptapteridae) from the Uruguay River basin, Brazil

Faustino‐Fuster, Dario R.; Bockmann, Flávio Alicino; Malabarba, Luiz Roberto

doi:10.1111/jfb.13908

Cited by 9 publications

(7 citation statements)

References 46 publications

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“…In addition to the comparative material listed by Faustino‐Fuster et al . (2019), the following lots were examined:…”

Section: Discussionmentioning

confidence: 99%

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A new species of Cetopsorhamdia (Siluriformes: Heptapteridae) from the Upper Amazon River basin

Faustino‐Fuster

Souza

2021

Journal of Fish Biology

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A new species of Cetopsorhamdia is described from material collected on rapid inventories and ichthyological expeditions in the Amazon region of Peru, Ecuador and Colombia. The new species can be differentiated from all other species of Cetopsorhamdia by the colouration pattern on fins, number of vertebrae, number of ribs, level insertion of dorsal fin, number of rays on dorsal and pectoral fin, osteological characters and several other morphometric characters. The new species is distributed along tributaries of the upper Amazon River basin in Peru, Colombia and

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“…In addition to the comparative material listed by Faustino‐Fuster et al . (2019), the following lots were examined:…”

Section: Discussionmentioning

confidence: 99%

“…All measurements were taken point to point and followed Lundberg and McDade (1986), Bockmann (1994) and Faustino‐Fuster et al . (2019). Standard length ( L S ) is given in millimetres, and the other measurements are expressed in percentage of L S or head length (HL) (Table 1a–c).…”

Section: Methodsmentioning

confidence: 99%

A new species of Cetopsorhamdia (Siluriformes: Heptapteridae) from the Upper Amazon River basin

Faustino‐Fuster

Souza

2021

Journal of Fish Biology

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“…Before statistically analysing morphometric data, the VARSEDIG algorithm (Chuctaya et al ., 2018; Faustino‐Fuster et al ., 2019; Guisande et al ., 2016; Leigh & Bryant, 2015) was used in Rstudio version 3.6.1 (RStudio Team, 2020) to identify measurements that could be significantly associated with sexual dimorphism in Epactionotus . A linear regression was then conducted to describe the morphometric character found to discriminate males and females.…”

Section: Methodsmentioning

confidence: 99%

“…Before statistically analysing morphometric data, the VARSEDIG algorithm (Chuctaya et al, 2018;Faustino-Fuster et al, 2019;Guisande et al, 2016;Leigh & Bryant, 2015) (Anderson, 2001). The same data set was used in both PCA and linear discriminant analysis (LDA), also performed in Past, to, respectively, search for general patterns of variation among specimens (Leal & Sant'Anna, 2006) and assess between-group patterns of body shape variation.…”

Section: Morphological Procedures and Terminologymentioning

confidence: 99%

Species delimitation in a range‐restricted group of cascudinhos (Loricariidae: Epactionotus) supports morphological and genetic differentiation across coastal rivers of southern Brazil

Delapieve

Carvalho

Reis

2020

Journal of Fish Biology

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Epactionotus species are known for inhabiting the rocky-bottom stretches of fastflowing rivers in a limited geographic area along the Atlantic coast of southern Brazil. These species are endemic to single coastal river drainages (two neighbouring drainages for Epactionotus bilineatus) isolated from each other by the coastal lacustrine environments or the Atlantic Ocean. E. bilineatus is from the Maquiné and Três Forquilhas River basins, both tributaries of the Tramandaí River system, whereas E. itaimbezinho is endemic to the Mampituba River drainage and Epactionotus gracilis to the Araranguá River drainage. Recent fieldwork in the Atlantic coastal drainages of southern Brazil revealed new populations in the Urussanga, Tubarão, d'Una and Biguaçu River drainages. Iterative species delimitation using molecular data (cytochrome c oxidase subunit I) and morphology (morphometrics and meristics) was applied to evaluate species recognition of isolated populations. With regard to new data, the genus was re-diagnosed, the status of Epactionotus species/populations was re-evaluated, formerly described species were supported and population structure was recognized. As for the newly discovered populations, both morphological and molecular data strongly support the population from the Biguaçu River drainage, in Santa Catarina State, as a new species. Molecular data revealed strong per-basin population structure, which may be related to species habitat specificity and low or no dispersal among drainages.

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“…The type species, H. mustelinus, is most similar phenotypically to H. carnatus Faustino-Fuster, Bockmann & Malabarba, 2019, H. exilis Faustino-Fuster, Bockmann & Malabarba, 2019, H. mandimbusu Aguilera, Benitez, Terán, Alonso & Mirande, 2017, H. mbya Azpelicueta, Aguilera & Mirande, 2011, H. ornaticeps Ahl, 1936, and H. qenqo Aguilera, Mirande & Azpelicueta, 2011. All those species, except H. ornaticeps, were described from the southern extreme of the geographic range of Heptapteridae (Lower Paraná, Salí and Uruguay River basins, in Argentina and southern Brazil) (Bleeker 1864;Ahl 1936;Aguilera et al 2011Aguilera et al , 2017Azpelicueta et al 2011;Faustino-Fuster et al 2019). In addition, the type locality of H. ornaticeps, "Rio de Janeiro", is inaccurate (Bockmann and Guazzelli 2003).…”

Section: Introductionmentioning

confidence: 92%

Redefinition of Heptapterus (Heptapteridae) and description of Heptapterus carmelitanorum, a new species from the upper Paraná River basin in Brazil

Deprá¹,

Aguilera²,

Faustino‐Fuster³

et al. 2022

ZSE

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A new diagnosis and a new classification of Heptapterus are provided and a new species, H. carmelitanorum, is described. Heptapterus is diagnosed by the following character combination: adipose fin confluent with the caudal fin; non-bifurcate caudal fin; anal-fin insertion posterior to vertical through adipose-fin insertion; 10–23 anal-fin rays; anal fin not confluent with caudal fin; and extremely elongate body, with a head length of 16.1–24.9%SL. Species included in Heptapterus are H. borodini, H. carmelitanorum, H. carnatus, H. exilis, H. hollandi, H. mandimbusu, H. mbya, H. mustelinus, H. ornaticeps, and H. qenqo. Some of the character states diagnosing H. carmelitanorum among its congeners are the anal-fin insertion less than one eye diameter posterior to a vertical through the adipose-fin insertion (vs. more than one eye diameter in all congeners); the isognathous mouth (vs. slightly to moderately retrognathous, except H. borodini); and the keel formed by ventral procurrent caudal-fin rays shallow, far from reaching anal-fin base (vs. keel formed by ventral procurrent caudal-fin rays deep, continuing almost to the anal-fin base, except in H. borodini and H. hollandi).

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Two new species of Heptapterus (Siluriformes: Heptapteridae) from the Uruguay River basin, Brazil

Cited by 9 publications

References 46 publications

A new species of Cetopsorhamdia (Siluriformes: Heptapteridae) from the Upper Amazon River basin

A new species of Cetopsorhamdia (Siluriformes: Heptapteridae) from the Upper Amazon River basin

Species delimitation in a range‐restricted group of cascudinhos (Loricariidae: Epactionotus) supports morphological and genetic differentiation across coastal rivers of southern Brazil

Redefinition of Heptapterus (Heptapteridae) and description of Heptapterus carmelitanorum, a new species from the upper Paraná River basin in Brazil

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