Extensive Karyotype Reorganization in the Fish Gymnotus arapaima (Gymnotiformes, Gymnotidae) Highlighted by Zoo-FISH Analysis. [PDF]
, 2018 The genus Gymnotus (Gymnotiformes) contains over 40 species of freshwater electric fishes exhibiting a wide distribution throughout Central and South America, and being particularly prevalent in the Amazon basin.
Ferguson-Smith, Malcolm A +5 more
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Boletim 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
Melanocortins regulate the electric waveforms of gymnotiform electric fish [PDF]
Hormones 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
Sexual dimorphism in the electric knifefish, Gymnorhamphichthys rondoni (Rhamphichthyidae: Gymnotiformes) [PDF]
Acta Amazonica, 2019 Sexual dimorfism refers to morphological differences between males and females of a species. It may be a result of different selection pressures acting on either or both sexes and may occur in any sexually-reproducing dioecious species, including fishes.
Elisa Queiroz GARCIA, Jansen ZUANON
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Fishes of the Vermelho River, São Lourenço River basin, Mato Grosso state, Brazil [PDF]
Check 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
The complete mitochondrial genome sequences of five Otophysi species (Vertebrata, Teleostei)
Mitochondrial 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
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Ichthyofauna of tributaries of the Vermelho River, upper Paraguay River basin, region of Rondonópolis, state of Mato Grosso, Brazil [PDF]
Check List, 2015 With the aim of finding information on the composition of the ichthyofauna of streams belonging to the Upper Paraguay River basin, in the municipality of Rondonópolis, state of Mato Grosso (MT), Brazil, we present a list of species captured at eight ...
Patrícia Vizzotto +1 more
doaj +3 more sources
Separability of drag and thrust in undulatory animals and machines [PDF]
, 2014 For nearly a century, researchers have tried to understand the swimming of aquatic animals in terms of a balance between the forward thrust from swimming movements and drag on the body.
Bale, Rahul +5 more
core +3 more sources
Structural and histochemical aspects of the Gymnotus carapo tegument (Teleostei: Gymnotiformes) [PDF]
Anais da Academia Brasileira de Ciências, 2023 The present study aims to structurally and histochemically characterize the Gymnotus carapo tegument. 30 specimens were captured and slaughtered by spinal section with anesthesia.
TANIA BLANCO COHENE +2 more
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Revista Brasileira de Parasitologia Veterinária, 2017 The aim of this study was to determine the morphometric measures and morphological aspects of nematode-cysts in Gymnotus inaequilabiatus, and the presence of melanomacrophage centers (MMCs) associated with the periphery of cysts and in the liver ...
Gizela Melina Galindo +5 more
doaj +1 more source