ArticlePhysiology & behavior2007
Circadian rhythms in electric waveform structure and rate in the electric fish Brachyhypopomus pinnicaudatus.
Article in Physiology & behavior, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
19 citing papers in PubMed, 75 citations in OpenAlex.
- Tracking spatial patterns and daily modulation of behavior in a natural population of the pulse-type weakly electric fish,iScience · 2025Article
- Understanding daily rhythms in weakly electric fish: the role of melatonin on the electric behavior of Brachyhypopomus gauderio.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2024Article
- Review
- Vocal and Electric Fish: Revisiting a Comparison of Two Teleost Models in the Neuroethology of Social Behavior.Frontiers in neural circuits · 2021Review
- Convergent patterns of evolution of mitochondrial oxidative phosphorylation (OXPHOS) genes in electric fishes.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020Article
- Dominance in Habitat Preference and Diurnal Explorative Behavior of the Weakly Electric FishFrontiers in integrative neuroscience · 2019Article
- Daily changes in the electric behavior of weakly electric fish naturally persist in constant darkness and are socially synchronized.Biology open · 2018Article
- Long-term behavioral tracking of freely swimming weakly electric fish.Journal of visualized experiments : JoVE · 2014Article
- Behavioral ecology, endocrinology and signal reliability of electric communication.The Journal of experimental biology · 2013Review
- Social regulation of electric signal plasticity in male Brachyhypopomus gauderio.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2013Article
- Signal modulation as a mechanism for handicap disposal.Animal behaviour · 2012Article
- Glucocorticoid receptor blockade inhibits brain cell addition and aggressive signaling in electric fish, Apteronotus leptorhynchus.Hormones and behavior · 2011Article
- Testosterone and 11-ketotestosterone have different regulatory effects on electric communication signals of male Brachyhypopomus gauderio.Hormones and behavior · 2011Article
- Social competition affects electric signal plasticity and steroid levels in the gymnotiform fish Brachyhypopomus gauderio.Hormones and behavior · 2009Article
- Reproductive and diurnal rhythms regulate vocal motor plasticity in a teleost fish.The Journal of experimental biology · 2009Article
- Circadian and social cues regulate ion channel trafficking.PLoS biology · 2009Article
- Androgens enhance plasticity of an electric communication signal in female knifefish, Brachyhypopomus pinnicaudatus.Hormones and behavior · 2009Article
- Melanocortins regulate the electric waveforms of gymnotiform electric fish.Hormones and behavior · 2009Article
- Signal Cloaking by Electric Fish.BioscienceArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
Weakly electric fish have long been known to express day-night oscillations in their discharge rates, and in the amplitude and duration of individual electric organ discharges (EODs). Because these oscillations are altered by social environment and neuroendocrine interactions, electric fish are excellent organisms for exploring the social and neuroendocrine regulation of circadian rhythm expression. Previous studies asserting that these oscillations are circadian rhythms have been criticized for failing to control temperature and randomize feeding regimes, or for running the fish under constant conditions for just 2-3 days. Here we show that the day-night oscillations in the EODs of the neotropical gymnotiform fish Brachyhypopomus pinnicaudatus free-run for over a week under constant photic and thermal conditions, and randomized food provisioning. Sex differences were apparent in strength and magnitude of the circadian oscillations; male oscillations were stronger and larger. All three parameters retain a common oscillation period while differing in the persistence of oscillation strength and magnitude, a difference consistent with proposals by others that declines of behavioral circadian rhythms may result from breakdowns downstream of the central oscillator.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.