Corumbataia

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Corumbataia
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Loricariidae
Subfamily: Hypoptopomatinae
Tribe: Otothyrini
Genus: Corumbataia
Britski, 1997
Type species
Corumbataia cuestae
Britski, 1997
Binomial name

Corumbataia britskii
Ferreira & Ribeiro, 2007
Corumbataia cuestae
Britski, 1997
Corumbataia tocantinensis
Britski, 1997

Corumbataia is a genus of catfishes (order Siluriformes) of the family Loricariidae. It includes three species, C. britskii, C. cuestae, and C. tocantinensis.[1]

Contents

[edit] Distribution

C. cuestae occurs in small streams of the Tietê River (upper Paraná River basin), and C. tocantinensis occurs in the Araguaia and Tocantins Rivers. C. britski is from small tributaries of the Sucuriú River, upper Paraná River Basin, Mato Grosso do Sul State, Central Brazil.[1]

[edit] Description

These species range in size from about 2.7–3.8 centimetres (1.1–1.5 in) SL.[2][3][4]

C. cuestae and C. tocantinensis were described to be differentiated by counts of premaxillary and dentary teeth. However, they also differ in color pattern, as the unbranched caudal fin rays of C. britskii and C. tocantinensis lack the striped pattern present in C. cuestae.[1]

Corumbataia species exhibit sexual dimorphism. Males differ from females by presenting a developed urogenital papillae posterior to the anus, a skin fold at the dorsal portion of the pelvic fin spine, and a much longer pelvic fin spine that extends over the first anal fin ray. In C. britskii, males also differ from females by having four white blotches on the caudal fin, two at the dorsal lobe and two at the ventral lobe. Females, on the other hand, present only two white blotches, one on each lobe.[1]

[edit] Ecology

C. britskii was sampled in deforested areas in moderate to fast current streams. It associates with aquatic macrophytes or the submerged portion of marginal vegetation. In its gut contents were found filamentous blue-green algae, chlorophytes, diatoms and bark.[1]

[edit] References

  1. ^ a b c d e Ferreira, Katiane M.; Ribeiro, Alexandre C. (2007). "Corumbataia britskii (Siluriformes: Loricariidae: Hypoptopomatinae) a new species from the upper Rio Paraná basin, Mato Grosso do Sul, Central Brazil" (PDF). Zootaxa 1386: 59–68. 
  2. ^ "Corumbataia britskii". FishBase. Ed. Ranier Froese and Daniel Pauly. July 2007 version. N.p.: FishBase, 2007.
  3. ^ "Corumbataia cuestae". FishBase. Ed. Ranier Froese and Daniel Pauly. July 2007 version. N.p.: FishBase, 2007.
  4. ^ "Corumbataia tocantinensis". FishBase. Ed. Ranier Froese and Daniel Pauly. July 2007 version. N.p.: FishBase, 2007.