Results 91 to 100 of about 2,449 (227)
Ultraestrutura da espermiogenese e dos espermatozoides de representantes da ordem Gymnotiformes (Teleostei, Ostariophysi) com considerações filogeneticas [PDF]
, 2018 Orientador: Irani Quagio-GrassiottoDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de BiologiaResumo: Os peixes da ordem Gymnotiformes formam um grupo monofilético, dentre outras apomorfias, por compartilharem características como a
França, Gisleine Fernanda
core
, 2018 A musculatura esquelética representa um dos principais complexos anatômicos dos vertebrados, contudo, esta fonte de informação é escassamente estudada em alguns grupos de peixes, com o conhecimento atual limitado em observações de aspectos superficiais ...
Peixoto, Luiz Antônio Wanderley
core +1 more source
Genetics and Molecular Biology, 2000 Patterns of amplified DNA fragments flanked by (GGAC)n microsatellites, obtained by single primer amplification reaction (SPAR), from 198 Gymnotus specimens (Pisces: Gymnotiformes) sampled from 8 southeastern Brazilian river basins were analyzed.
F.M.C. Fernandes-Matioli +2 more
doaj +1 more source
, 2021 Electrophorus spp. generate high-voltage electric discharges for defense and hunting, and low-voltage electric discharges (as other Gymnotiformes) for electrolocation and communication.
Gabriel Verçoza +4 more
semanticscholar +1 more source
Freshwater Biology, Volume 70, Issue 12, December 2025.ABSTRACT Environmental changes can have persistent effects on the local and regional dynamics of multispecies assemblages. However, the extent of historical legacies on current diversity patterns may depend on the trajectory and intensity of the environmental change. Here, we investigate how persistent decadal land use and land cover (LULC) changes are
Jaquelini O. Zeni +3 more
wiley +1 more source
A new species of Gymnotus (Gymnotiformes: Gymnotidae) from the Fitzcarrald Arch of southeastern Peru [PDF]
, 2009 Fig. 3. Map of part of South America showing the known geographic distribution of Gymnotus chaviro. Type locality indicated by square symbol. Base map by M. Weitzman.Published as part of Maxime, Emmanuel L.
Emmanuel L. Maxime +3 more
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Comunicación eléctrica en peces sudamericanos
Iatreia, 2005 Los Gymnotiformes, peces eléctricos americanos de descarga débil, poseen un refinado ";Sentido Electrosensorial Activo"; que les permite explorar su medio ambiente y comunicarse.
Ana Silva, Oscar Macadar
doaj
Design and construction of an Electric Fish Finder
Neotropical IchthyologyWe provide notes on the design and construction of an Electric Fish Finder - a portable differential amplifier for detecting the electrostatic fields of gymnotiform knifefishes.
William G. R. Crampton +3 more
doaj +1 more source
A 12S rDNA barcode reference library for Neotropical electric fishes (Teleostei, Gymnotiformes)
Metabarcoding and MetagenomicsDNA barcodes are instrumental for identifying species from tissues and environmental samples. Metabarcoding-based assessments of biodiversity depend on taxonomically accurate barcode sequence libraries that can be queried to determine which species are ...
Nicole D. Juby +2 more
semanticscholar +1 more source
Ecosphere, Volume 16, Issue 11, November 2025.Abstract Invasive species alter habitats and biological communities. The giant river prawn Macrobrachium rosenbergii (de Man 1879) was introduced to Brazil for aquaculture, and invasive populations have established in the Amazon Delta region where they are believed to pose a risk to the native aquatic fauna.
Aisha Carolina Cei +12 more
wiley +1 more source