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Electric Organ (0)
Articles on Electric Organ
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Neural heterogeneities influence envelope and temporal coding at the sensory periphery
Neuroscience (2011) PMID 21035523
We investigated electroreceptor neuron coding in the gymnotiform wave-type weakly electric fish Apteronotus leptorhynchus. Previous studies used low to mid temporal frequencies (<256 Hz) and showed that electroreceptor neuron responses to sensory stimuli could be almost exclusively accounted for by... -
Long-term recognition memory of individual conspecifics is associated with telencephalic expression of Egr-1 in the electric fish Apteronotu...
J Comp Neurol 518(14):2666-92 (2010) PMID 20506470
We show that the electric fish Apteronotus leptorhynchus can learn to recognize individual conspecifics based on a simple cue, the beat frequency of their summed sinusoidal electric organ discharges (EOD). Male fish produce transient communication signals (chirps) in response to mimic EODs. The chir... -
Androgens enhance plasticity of an electric communication signal in female knifefish, Brachyhypopomus pinnicaudatus
Horm Behav 56(2):10 (2009) PMID 19450600
We investigated the role of androgens in potentiating circadian, pharmacological, and socially-induced plasticity in the amplitude and duration of electric organ discharges (EODs) of female gymnotiform fish. We first challenged female fish with injections of serotonin (5-HT) and adrenocorticotropic... -
Measuring Ion Channels on Solid Supported Membranes
Biophys J 97(1):9 (2009) PMID 19580777
We demonstrate the application of the technique to liposomes reconstituted with the peptide cation channel gramicidin, vesicles from native tissue containing the nicotinic acetylcholine receptor, and membranes from a recombinant cell line expressing the ionotropic P2X2 receptor. It is shown that sta... -
Electrifying love: electric fish use species-specific discharge for mate recognition.
Biol Lett 5(2):225-8 (2009) PMID 19033131
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Molecular evolution of Na+ channels in teleost fishes.
Integrative Zoology 4(1):64-74 (2009) PMID 21392277
We review how the occurrence of multiple sodium channel paralogs has influenced the evolutionary history of three groups of fishes: pufferfish, gymnotiform and mormyriform electric fish. Pufferfish (tetraodontidae) produce a neurotoxin, tetrodotoxin, that binds to and blocks the pore of sodium chann... -
Non-visual crypsis: a review of the empirical evidence for camouflage to senses other than vision.
Philos Trans R Soc Lond B Biol Sci 364(1516):549-57 (2009) PMID 19000976
We have very few examples of chemical camouflage, and even these contain some ambiguity in deciding whether they are best seen as examples of background matching or mimicry. There are many examples of organisms that are adaptively silent at times or in locations when or where predation risk is highe... -
S. macrurus myogenic regulatory factors (MRFs) induce mammalian skeletal muscle differentiation; evidence for functional conservation of MRF...
Int J Dev Biol 53(7):993-1002 (2009) PMID 19598116
We transiently over-expressed S. macrurus MyoD (SmMyoD) and myogenin (SmMyoG) in mouse C3H/10T1/2 and NIH3T3 embryonic cells. RT-PCR and immunolabeling studies showed that SmMyoD and SmMyoG can efficiently convert these two cell lines into multinucleated myotubes which expressed differentiated muscl... -
Spontaneous firing statistics and information transfer in electroreceptors of paddlefish.
Phys Rev E Stat Nonlin Soft Matter Phys 78(5 Pt 1):051922 (2008) PMID 19113170
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A novel Na+ channel splice form contributes to the regulation of an androgen-dependent social signal.
J Neurosci 28(37):9173-82 (2008) PMID 18784298
We have been studying the regulation of Na(+) current inactivation in an electric fish model in which systematic variation in the rate of inactivation of the electric organ Na(+) current shapes the electric organ discharge (EOD), a sexually dimorphic, androgen-sensitive communication signal. Here, w...
