Results 41 to 50 of about 878 (168)

A new species of Aphanotorulus (Siluriformes: Loricariidae) from the rio Aripuanã basin, Brazil

open access: yesNeotropical Ichthyology, 2017
The cis-Andean genus Aphanotorulus was recently revised and comprises six valid species: A. ammophilus, A. emarginatus, A. gomesi, A. horridus, A. phrixosoma and A. unicolor.
Andreza S. Oliveira   +2 more
doaj   +1 more source

Examination of a culturable microbial population from the gastrointestinal tract of the wood-eating loricariid catfish Panaque nigrolineatus [PDF]

open access: yes, 2013
Fish play a critical role in nutrient cycling and organic matter flow in aquatic environments. However, little is known about the microbial diversity within the gastrointestinal tracts that may be essential in these degradation activities.
Daniel, R.   +3 more
core   +2 more sources

From fresh water to the slope: fish community ecology in the Río de la Plata and the sea beyond [PDF]

open access: yes, 2010
The spatial pattern of fish assemblages and its relationship with factors along an environment gradient, from fresh to marine water environment along the Río de la Plata estuary (36ºS, 56ºW) the shelf and part of the slope, was examined using data from ...
García, Mirta L.   +2 more
core   +5 more sources

A new species of Panaqolus (Siluriformes: Loricariidae) from the rio Branco

open access: yesNeotropical Ichthyology
A new species of Panaqolus is described from material from the Takutu River and the mainstem rio Branco. The new species is diagnosed from congeners by its color pattern consisting of dark and light bars on the body, bands on the fins, and with dots and ...
Milton Tan   +2 more
doaj   +1 more source

Karyotype uniformity in populations of the endemic Hemiancistrus fuliginosus (Loricariidae: Hypostomini) collected in the upper and middle Uruguai River [PDF]

open access: yesNeotropical Ichthyology
Disagreements in molecular and morphological analyzes have generated conflicts about the correct allocation of Hemiancistrus fuliginosus in Hypostominae. In this study, cytogenetics analyzes in four populations of H.
Jocicléia Thums Konerat   +4 more
doaj   +1 more source

In Situ Localization of Ribosomal Sites in Peckoltia and Ancistomus (Loricariidae: Hypostominae) from the Amazon Basin

open access: yesZebrafish, 2018
Loricariidae is a diverse group of fish from the neotropical region, occupying a wide variety of freshwater environments. Cytogenetic data have brought important insights into Loricariidae diversity because they help validate undescribed species as well ...
Ananda Marques Pety   +5 more
semanticscholar   +1 more source

A new species of Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae) from the upper rio Paraná basin, Southern Brazil

open access: yesNeotropical Ichthyology
A new species of Hypostomus with large and spaced light roundish spots is described from the upper rio Paraná basin. Hypostomus multidens new species is distinguished from all remaining congeners with light spots on a darker background by two independent
Fernando C. Jerep   +2 more
doaj   +1 more source

Heterochromatin heterogeneity in Hypostomus prope unae (Steindachner, 1878) (Siluriformes, Loricariidae) from Northeastern Brazil

open access: yesComparative Cytogenetics, 2011
Cytogenetic analyses using C-banding and chromosomal digestion by several restriction enzymes were carried out in four populations (named A, B, C and D) of Hypostomus prope unae (Loricariidae, Hypostominae) from Contas river basin, northeastern Brazil ...
Jamille Bitencourt   +3 more
doaj   +1 more source

The loricariid catfish genus Lasiancistrus (Siluriformes) with descriptions of two new species

open access: yesNeotropical Ichthyology
Lasiancistrus (Loricariidae: Hypostominae: Ancistrini) is diagnosed by the unique presence of a ventral strut of the pterotic and the presence of whiskerlike odontodes on the snout.
Jonathan W. Armbruster
doaj   +1 more source

Biometric and reproductive characteristics of the King Tiger Plecos Hypancistrus sp. “L-333” (Siluriformes: Loricariidae) endemic to the lower Xingu River (Pará, Brasil) [PDF]

open access: yes, 2021
This research analyzed the biometrics and reproductive characteristics of a group of Hypancistrus sp. L-333 (King Tiger Plecos) in order to gather biological information and aid the rearing of the species in captivity, thus supporting its natural ...
Beltrão, Hélio   +5 more
core   +2 more sources

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