Results 21 to 30 of about 150 (103)

Revision Of The Deep-Channel Electric Fish Genus Sternarchogiton (Gymnotiformes: Apteronotidae)

, 2007
The Neotropical ghost knifefish genus Sternarchogiton is revised on the basis of morphology and pigmentation. A new diagnosis for the genus is provided. Two new deep-channel taxa from the lowland portions of the Amazon basin are described: S.
De Santana, Carlos David, Crampton, William G.R.   +1 more
core   +1 more source

Development of the electric organ in knifefish Brachyhypopomus gauderio

, 2018
The South American gymnotiform knifefish, Brachyhypopomus gauderio is a weakly electric fish species possessing an electric organ (EO). Development of the EO at embryonic and early larval stages has not been extensively studied. B. gauderio is relatively
Alshami, Ilham Jabbar Jalil
core   +1 more source

Sex Differences in the Electrocommunication Signals of the Electric Fish Apteronotus bonapartii

, 2010
The South American weakly electric knifefish (Apteronotidae) produce highly diverse and readily quantifiable electrocommunication signals. The electric organ discharge frequency (EODf) and EOD modulations (chirps and gradual frequency rises) vary ...
Winnie W. Ho, José A. Alves-Gomes, Alves-Gomes, José Antônio, Smith, G. Troy, Cristina Cox Fernandes, G. Troy Smith, Ho, Winnie W., Fernandes, Cristina Cox   +7 more
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Opposing actions of androgen and estrogen on in vitro firing frequency of neuronal oscillators in the electromotor system

, 1996
The South American knifefish (Apteronotus leptorhynchus), or brown ghost, produces a high-frequency (600–1000 Hz) sinusoidal electric organ discharge (EOD) with males discharging at higher frequencies than females. In addition, each fish has a unique EOD
Je Schaefer, HH Zakon
core   +1 more source

Electrosensory phase sensitivity in the weakly electric fish Eigenmannia in the detection of signals similar to its own

, 1996
The electric organ discharge (EOD) of the South American knifefish Eigenmannia sp. is a permanently present wave signal of usually constant amplitude and frequency (similar to a sine wave). A fish perceives discharges of other fish as a modulation of its
Kramer, Bernd, Kaunzinger, Ivo
core   +1 more source

Diversity in the structure of signals produced by South American weakly electric knifefish

, 2016
Natural and sexual selection shape animal communication signals according to the demands of social context and the environment, which results in enormous variation in signal properties.
Petzold, Jacquelyn M.
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A phylogenetic analysis of the American knifefishes (Teleostei: Gymnotoidei).

, 1995
The evolutionary relationships of the American knifefishes (Teleostei: Gymnotoidei) are documented from examination of 507 museum lots containing 2454 knifefish specimens, representing 80 of the 92 recognized species and 13 additional undescribed species.
Albert, James Spurling
core  

De Novo Genome Assembly of the Electric Fish Brachyhypopomus occidentalis (Hypopomidae, Gymnotiformes). [PDF]

Genome Biol Evol, 2021
Arias CF, Dikow RB, McMillan WO, De León LF.   +3 more
europepmc   +1 more source

Divergent cis-regulatory evolution underlies the convergent loss of sodium channel expression in electric fish. [PDF]

Sci Adv, 2022
LaPotin S, Swartz ME, Luecke DM, Constantinou SJ, Gallant JR, Eberhart JK, Zakon HH.   +6 more
europepmc   +1 more source

Social and seasonal plasticity of the electric fish, Brachyhypopomus gauderio

, 2010
The South American electric knifefish, Brachyhypopomus gauderio, uses weakly electric fields to see and communicate in the dark. Only one study to date has investigated natural behavior in this species during the breeding season; this study proposed that
Molina, Juan
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