Results 31 to 40 of about 3,600 (245)
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
Cardiac myoglobin deficit has evolved repeatedly in teleost fishes [PDF]
, 2014 Peer reviewedPublisher ...
Collins MR +3 more
core +2 more sources
Are NORs always located on homeologous chromosomes? A FISH investigation with rDNA and whole chromosome probes in Gymnotus fishes (Gymnotiformes). [PDF]
PLoS ONE, 2013 Gymnotus (Gymnotiformes, Gymnotidae) is the most diverse known Neotropical electric knife fish genus. Cytogenetic studies in Gymnotus demonstrate a huge karyotypic diversity for this genus, with diploid numbers ranging from 34 to 54.
Susana S R Milhomem +7 more
doaj +1 more source
Iheringia: Série Zoologia, 2007 As assembléias de peixes do ribeirão do Pântano, São Paulo, Brasil foram estudadas mensalmente entre os meses de maio de 2000 e junho de 2001. Estudos sobre sua composição, distribuição longitudinal e constância das espécies de peixes foram realizados ...
Odynei R. Perez-Junior +1 more
doaj +1 more source
Coding and processing of electrosensory information in gymnotiform fish [PDF]
Journal of Experimental Biology, 1989 ABSTRACT Studies of the electrosensory system of gymnotiform fish have revealed principles of neuronal coding and processing of information which also character-ize more advanced systems, such as vision and audition in higher vertebrates.
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Neuromodulation of early electrosensory processing in gymnotiform weakly electric fish [PDF]
Journal of Experimental Biology, 2013 Summary Sensory neurons continually adapt their processing properties in response to changes in the sensory environment or the brain's internal state. Neuromodulators are thought to mediate such adaptation through a variety of receptors and their action has been implicated in processes such as attention, learning and memory, aggression ...
Brenda Toscano, Márquez +2 more
openaire +2 more sources
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
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
Regulation and modulation of electric waveforms in gymnotiform electric fish [PDF]
Journal of Comparative Physiology A, 2006 Weakly electric gymnotiform fish specialize in the regulation and modulation of the action potentials that make up their multi-purpose electric signals. To produce communication signals, gymnotiform fish modulate the waveforms of their electric organ discharges (EODs) over timescales spanning ten orders of magnitude within the animal's life cycle ...
Philip K, Stoddard +3 more
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Submicrosecond pacemaker precision is behaviorally modulated: The gymnotiform electromotor pathway [PDF]
Proceedings of the National Academy of Sciences, 1998 What are the limits and modulators of neural precision? We address this question in the most regular biological oscillator known, the electric organ command nucleus in the brainstem of wave-type gymnotiform fish. These fish produce an oscillating electric field, the electric organ discharge (EOD), used in electrolocation and communication.
K T, Moortgat +3 more
openaire +2 more sources