Description of a new species of Parotocinclus (Siluriformes, Hypoptopomatinae) from the rio Tapajós basin

Roxo, Fábio Fernandes; Silva, Gabriel da Costa e; Oliveira, Cláudio

doi:10.3897/zookeys.634.9917

Cited by 7 publications

(8 citation statements)

References 23 publications

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“…The non-monophyletic Parotocinclus is up-to-date composed by 30 species distributed in the cisandine neotropics drainages (Lehmann et al, 2015;Ramos et al, 2016;Roxo et al, 2016). The resolution of this systematic problem depends on the designation of new genera that reflect the relationships among the lineages currently assigned to Parotocinclus (Lehmann et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…The other six species are P. spilurus and P. seridoensis both from the MNCE, P. bidentatus and P. muriaensis from the Paraíba do Sul ecoregion, and P. dani and P. habolthi from 8 e160153 [8] the Amazon-Orinoco-Guiana Core (Ramos et al, 2016;Roxo et al, 2016). The phylogenetic relationships among these species are not yet known and the evolution of the adipose fin in the Hypoptopomatinae is not yet clear.…”

Section: Discussionmentioning

confidence: 99%

“…At least six of species of Parotocinclus have vestigial or rudimentary adipose fin: P. bidentatus Gauger & Buckup and P. muriaensis Gauger & Buckup (both (Ramos et al, 2016) and P. dani Roxo, Silva & Oliveira (from rio Tapajós in Mato Grosso State, Brazil) (Roxo et al, 2016). The goal of the present paper is to describe a new species of Parotocinclus from the Parnaíba basin, which also shares this characteristic.…”

Section: Introductionmentioning

confidence: 88%

“…The genus is widely distributed in cis-andean South America, including the Orinoco, Amazon, Parnaíba and São Francisco river basins, the Atlantic coastal drainages of the Guianas, and the coastal rivers from Northeastern Brazilian states as well as the coastal rivers between the states of Espírito Santo and Santa Catarina (Garavello, 1977(Garavello, , 1988Schaefer, 2003;Lehmann et al, 2015;Roxo et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…The northeastern Brazil includes the highest species richness of the small armored catfishes Parotocinclus, with 12 of 30 nominal species (Ramos et al, 2016;Lehmann et al, 2015;Roxo et al, 2016). Five of these species were described by Garavello (1977Garavello ( , 1988: Parotocinclus cristatus Garavello, P. jimi Garavello and P. minutus Garavello, all from eastern coastal basins of Bahia State (Northeastern Mata Atlântica ecoregion, NMAE), P. cearensis Garavello from rio Acaraú and Choró basins, Ceará State (Mid-Northeastern Caatinga ecoregion, MNCE), and P. haroldoi Garavello from rio Parnaíba basin, Piauí State (Maranhão-Piauí ecoregion, MAPE).…”

Section: Introductionmentioning

confidence: 99%

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A new species of armored catfish Parotocinclus (Siluriformes: Loricariidae) from the rio Parnaíba basin, northeastern, Brazil

2017

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Recent taxonomic studies indicated the presence of several undescribed species in the rio Parnaíba basin. Among those, a new species of Parotocinclus endemic of this drainage is herein described. It differs from most of its congeners, including the sympatric P. haroldoi and P. cearensis, by a vestigial or rudimentary adipose fin (vs. conspicuous adipose fin). This character is also present in P. bidentatus and P. muriaensis (both from the rio Paraíba do Sul basin, southeastern Brazil), P. spilurus (rio Jaguaribe basin, northeastern Brazil), P. seridoensis (rio Piranhas-Açu basin, northeastern Brazil), P. halbothi (rios Trombetas and Marowijne basins, northern Brazil and Suriname) and P. dani (from rio Tapajós in Mato Grosso State, Brazil). The new species differs from these latter species mainly by the abdomen extensively covered by broad dermal plates. It also differs from P. haroldoi and P. cearensis by light bands between the snout tip and the nostrils.Keywords: Caatinga and Cerrado ichthyofauna, Hypoptopomatinae, Maranhão-Piauí ecoregion, Taxonomy.Estudos taxonômicos recentes indicaram a presença de várias espécies não descritas na bacia do rio Parnaíba. Dentre estas, uma nova espécie de Parotocinclus endêmica desta drenagem é aqui descrita. Ela difere da maioria dos seus congêneres, incluindo as simpátricas P. haroldoi e P. cearensis, por apresentar nadadeira adiposa vestigial ou rudimentar (vs. nadadeira adiposa desenvolvida). Este caráter também está presente em P. bidentatus e P. muriaensis (ambos do rio Paraíba do Sul, sudeste do Brasil), P. spilurus (bacia do rio Jaguaribe, nordeste do Brasil), P. seridoensis (bacia do rio Piranhas-Açu, nordeste do Brasil), P. halbothi (bacias dos rios Trombetas e Marowijne, norte do Brasil e no Suriname) e P. dani (do rio Tapajós no Estado do Mato Grosso, Brasil). A nova espécie difere destas principalmente pelo abdômen extensivamente coberto por placas dérmicas largas. Também difere de P. haroldoi e P. cearensis pela presença de faixas claras entre a ponta do focinho e as narinas.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A new species of armored catfish Parotocinclus (Siluriformes: Loricariidae) from the rio Parnaíba basin, northeastern, Brazil

2017

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Parotocinclus jacksoni, a new hypoptopomatine catfish (Siluriformes: Loricariidae) from the Rio Mamanguape basin, north‐eastern Brazil

Ramos

Costa

Barros-Neto

et al. 2021

Journal of Fish Biology

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A new species of Parotocinclus is described from the Rio Mamanguape basin, in the State of Paraíba, north‐eastern Brazil. The new species can be distinguished from all of its congeners, except for P. bahiensis, P. cesarpintoi, P. jumbo, P. nandae and P. spilosoma, by the presence of an abdomen covered by a few small and dispersed platelets (vs. an abdomen entirely covered by large plates in adult individuals or the absence of plates in that region). The new species differs from those mentioned above with respect to several features, such as an exposed pectoral girdle and supporting odontodes medially and laterally, the number of premaxillary and dentary teeth, odontodes covering only the lateral portion of the cleithrum and the absence of irregular golden lines on the head and body (colour in vivo). The new species was collected only in the upper and middle portions of the Rio Mamanguape basin, suggesting a geographic distribution restricted to the Caatinga biome.

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A new species ofParotocinclus(Loricariidae: Hypoptopomatinae) from the rio Pardo basin, Bahia State, Brazil, with comments on the sexually dimorphic traits of the nares and olfactory lamellae

Dario

Zanata

2022

Journal of Fish Biology

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A new species of Parotocinclus is described from lower rio Pardo basin, Bahia, Brazil.The new species differs from the majority of its congeners by the presence of a rudimentary or vestigial adipose fin, restricted to one to three small unpaired plates on the typical location of the fin. The new species differs from congeners that lack a well-developed adipose fin, and also from various other congeners, by a series of features including the absence of unicuspid accessory teeth and abdomen completely covered by plates similar in size. Additionally, mature males of the new species possess hypertrophied and a higher number of olfactory lamellae, when compared to similar-sized or even larger females. Hypertrophied and higher number of olfactory lamellae in males is shared with the congeners from the north-eastern Mata Atlântica freshwater ecoregion examined to the feature.

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Description of a new species of Parotocinclus (Siluriformes, Hypoptopomatinae) from the rio Tapajós basin

Cited by 7 publications

References 23 publications

A new species of armored catfish Parotocinclus (Siluriformes: Loricariidae) from the rio Parnaíba basin, northeastern, Brazil

A new species of armored catfish Parotocinclus (Siluriformes: Loricariidae) from the rio Parnaíba basin, northeastern, Brazil

Parotocinclus jacksoni, a new hypoptopomatine catfish (Siluriformes: Loricariidae) from the Rio Mamanguape basin, north‐eastern Brazil

A new species ofParotocinclus(Loricariidae: Hypoptopomatinae) from the rio Pardo basin, Bahia State, Brazil, with comments on the sexually dimorphic traits of the nares and olfactory lamellae

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