Results 11 to 20 of about 22,188 (257)

Exploring the effect on marine fish of electric fields of a fish‐protection

open access: yesЮг России: экология, развитие, 2022
Aim. Experimental assessment of the impact of electric fields generated by the Electronic Programmable Complex Fish‐protecting Facility on the Electric Principle (EP EPRCFF) on the most common fish species of the Black Sea.Material and Methods ...
I. A. Stolbunov   +7 more
doaj   +1 more source

Sexual dimorphism in the electric knifefish, Gymnorhamphichthys rondoni (Rhamphichthyidae: Gymnotiformes) [PDF]

open access: yesActa 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
doaj   +1 more source

Theoretical analysis of pre-receptor image conditioning in weakly electric fish. [PDF]

open access: yesPLoS Computational Biology, 2005
Electroreceptive fish detect nearby objects by processing the information contained in the pattern of electric currents through the skin. The distribution of local transepidermal voltage or current density on the sensory surface of the fish's skin is the
Adriana Migliaro   +2 more
doaj   +2 more sources

Electric imaging through evolution, a modeling study of commonalities and differences. [PDF]

open access: yesPLoS Computational Biology, 2014
Modeling the electric field and images in electric fish contributes to a better understanding of the pre-receptor conditioning of electric images. Although the boundary element method has been very successful for calculating images and fields, complex ...
Federico Pedraja   +3 more
doaj   +1 more source

Generalization of learned responses in the mormyrid electrosensory lobe

open access: yeseLife, 2019
Appropriate generalization of learned responses to new situations is vital for adaptive behavior. We provide a circuit-level account of generalization in the electrosensory lobe (ELL) of weakly electric mormyrid fish. Much is already known in this system
Conor Dempsey   +2 more
doaj   +1 more source

Automatic realistic real time stimulation/recording in weakly electric fish: long time behavior characterization in freely swimming fish and stimuli discrimination. [PDF]

open access: yesPLoS ONE, 2014
Weakly electric fish are unique model systems in neuroethology, that allow experimentalists to non-invasively, access, central nervous system generated spatio-temporal electric patterns of pulses with roles in at least 2 complex and incompletely ...
Caroline G Forlim, Reynaldo D Pinto
doaj   +1 more source

Effect of voltage gradient in an electrical field on threshold indices of fish response [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1991
The work presents experimental methods and effect of an electric field of alternating current potential changes on threshold values of some fish species from the Volga delta response.
E.T. Prel
doaj   +3 more sources

A JAR of Chirps: The Gymnotiform Chirp Can Function as Both a Communication Signal and a Jamming Avoidance Response

open access: yesFrontiers in Integrative Neuroscience, 2019
The weakly electric gymnotiform fish produce a rhythmic electric organ discharge (EOD) used for communication and active electrolocation. The EOD frequency is entrained to a medullary pacemaker nucleus. During communication and exploration, this rate can
Caitlin E. Field   +4 more
doaj   +1 more source

Adaptive shift of active electroreception in weakly electric fish for troglobitic life

open access: yesFrontiers in Ecology and Evolution, 2023
The adaptive-shift hypothesis for the evolution of cave-dwelling species posits that ancestor species in surface habitats had exaptations for subterranean life that were exploited when individuals invaded caves.
Daphne Soares   +3 more
doaj   +1 more source

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   +1 more source

Home - About - Disclaimer - Privacy