Results 11 to 20 of about 709 (151)

Data supporting phylogenetic reconstructions of the Neotropical clade Gymnotiformes

open access: yesData in Brief, 2016
Data is presented in support of model-based total evidence (MBTE) phylogenetic reconstructions of the Neotropical clade of Gymnotiformes “Model-based total evidence phylogeny of Neotropical electric knifefishes (Teleostei, Gymnotiformes)” (Tagliacollo et
Victor A. Tagliacollo   +4 more
doaj   +5 more sources

Dimorfismo sexual em Siluriformes e Gymnotiformes (Ostariophysi) da Amazônia Sexual dimorfism in Amazonian Siluriformes and Gymnotiformes (Ostariophysi)

open access: yesActa Amazonica, 2005
No presente trabalho é feito um levantamento dos casos de dimorfismo sexual em Siluriformes e Gymnotiformes. Este levantamento se restringe às formas Neotropicais, com ênfase mais especificamente, às da Amazônia.
Lúcia H. Rapp Py-Daniel   +1 more
doaj   +3 more sources

Patterns of diversification and phylogenetic structure in the dorsolateral head musculature of Neotropical electric eels (Ostariophysi: Gymnotiformes), with a myological synonymy

open access: yesNeotropical Ichthyology, 2022
The present study offers a broad comparative analysis of the dorsolateral head musculature in the Gymnotiformes, with detailed descriptions and illustrations of the dorsolateral head muscles of 83 species representing combined all valid genera.
Luiz Antônio Wanderley Peixoto   +1 more
doaj   +1 more source

Fish, Sorocaba river sub-basin, state of São Paulo, Brazil. [PDF]

open access: yesCheck List, 2007
In this paper we present a list of the fish fauna of Sorocaba river sub-basin. Fish were caught with gillnets,sieves and puçás, a sort of funnel net. We listed 71 species, distributed in 7 orders, 22 families and 50 genera.Characiformes are represented ...
Smith, W. S.   +2 more
doaj   +4 more sources

The untold story of the caudal skeleton in the electric eel (ostariophysi: gymnotiformes: electrophorus). [PDF]

open access: yesPLoS ONE, 2013
Alternative hypotheses had been advanced as to the components forming the elongate fin coursing along the ventral margin of much of the body and tail from behind the abdominal region to the posterior margin of the tail in the Electric Eel, Electrophorus ...
Carlos David de Santana   +2 more
doaj   +1 more source

ENDOPARASITOS DE Gymnotus sp. (GYMNOTIFORMES: GYMNOTIDAE) DE ISQUEIROS COMERCIAIS NA BACIA DO PANTANAL, BRASIL CENTRAL

open access: yesBoletim do Instituto de Pesca, 2018
Este estudo avaliou os parasitos endohelmí­­nticos do peixe nativo Gymnotus spp. coletados de diferentes isqueiros comerciais na bacia do Pantanal, Mato Grosso do Sul, Brasil Central.
Arlene Sobrinho VENTURA   +5 more
doaj   +1 more source

Fishes of the Vermelho River, São Lourenço River basin, Mato Grosso state, Brazil [PDF]

open access: yesCheck List, 2013
We present a list of ichthyofauna of the Vermelho River, a tributary of the São Lourenço River, Paraguay basin. Fishes were caught with seine nets measuring approximately 10 m in total length and with a mesh size of 0.5 cm.
Reinaldo de Castro, Patrícia Vizzotto
doaj   +3 more sources

Melanocortins regulate the electric waveforms of gymnotiform electric fish [PDF]

open access: yesHormones and Behavior, 2009
The hypothalamic-pituitary-adrenal/interrenal axis couples serotonergic activity in the brain to the peripheral regulators of energy balance and response to stress. The regulation of peripheral systems occurs largely through the release of peptide hormones, especially the melanocortins (adrenocorticotropic hormone [ACTH] and alpha melanocyte ...
Michael R, Markham   +3 more
openaire   +2 more sources

Glutamatergic control of a pattern-generating central nucleus in a gymnotiform fish [PDF]

open access: yesJournal of Neurophysiology, 2020
Underpinnings of neuromodulation of central pattern-generating networks (CPG) have been well characterized in many species. The effects of fast neurotransmitter systems remain, however, poorly understood. This research uses in vitro electrophysiological and pharmacological techniques to show that the neurotransmitter control of a vertebrate CPG in ...
Virginia Comas, Michel Borde
openaire   +2 more sources

The complete mitochondrial genome sequences of five Otophysi species (Vertebrata, Teleostei)

open access: yesMitochondrial DNA. Part B. Resources, 2019
Complete mitochondrial genomes of the characiform fishes Astyanax fasciatus, Astyanax altiparanae, Hoplias malabaricus (Karyomorph A) and the Gymnotiformes species Gymnotus sylvius and Gymnotus cuia were characterized in the present study.
Rodrigo Milan Calegari   +5 more
doaj   +1 more source

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