ArticleHormones and behavior2009
Social competition affects electric signal plasticity and steroid levels in the gymnotiform fish Brachyhypopomus gauderio.
Article in Hormones and behavior, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Ripple effects in a communication network: anti-eavesdropper defence elicits elaborated sexual signals in rival males.Proceedings. Biological sciences · 2023Article
- Pheromone Perception in Fish: Mechanisms and Modulation by Internal Status.Integrative and comparative biology · 2023Review
- 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
- Reproductive life-history strategies in a species-rich assemblage of Amazonian electric fishes.PloS one · 2019Article
- Predators inhibit brain cell proliferation in natural populations of electric fish, Brachyhypopomus occidentalis.Proceedings. Biological sciences · 2016Article
- Ionic mechanisms of microsecond-scale spike timing in single cells.The Journal of neuroscience : the official journal of the Society for Neuroscience · 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
- Testosterone and 11-ketotestosterone have different regulatory effects on electric communication signals of male Brachyhypopomus gauderio.Hormones and behavior · 2011Article
- Environmental complexity, seasonality and brain cell proliferation in a weakly electric fish, Brachyhypopomus gauderio.The Journal of experimental biology · 2011Article
Corrections and comments
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Authors and funding
2 authors.
Funding
Abstract
Sexually-selected communication signals can be used by competing males to settle contests without incurring the costs of fighting. Steroid regulation of these signals can render them as reliable indicators of a male's physiological state. We investigated how plasticity in electrocommunication signals is driven by social competition for mates, mediated by steroid hormones, and subject to the effects of past social experience. We measured the electric waveform's amplitude and duration and steroid hormone levels of male gymnotiform electric fish (Brachyhypopomus gauderio) following week-long periods of social isolation, and low or high social competition. To quantify the effect of social history on the modulation of the electric signal, six groups of six males experienced all three social conditions but in different order. We found that males differentially modulate their electric signals depending on the order they experienced these conditions. Thus, past social interactions affect both present and future social electric signals. Cortisol levels and the amplitude of the electric signal appeared to track the intensity of competition, while androgen levels and the duration of the electric signal only responded to the presence (low and high competition) or absence (isolation) of a social environment (low and high androgens respectively). In addition, cortisol levels were related to the body size of the males at high social competition. Taken together, these findings suggest that the capacity of males to modulate their signals in response to social competition is regulated by steroids.
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