ArticleJournal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology2018
Genes linked to species diversity in a sexually dimorphic communication signal in electric fish.
Article in Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 22 citations in OpenAlex.
- Population Variation in Steroid Hormone-Related Gene Expression and Sexually Dimorphic Communication in the Electric Fish Apteronotus albifrons.Journal of experimental zoology. Part A, Ecological and integrative physiology · 2025Article
- The potassium channel subunit KeLife · 2024Article
- Differential expression of steroid-related genes across electrosensory brain regions in two sexually dimorphic species of electric knifefish.General and comparative endocrinology · 2024Review
- The potassium channel subunit KbioRxiv : the preprint server for biology · 2024Article
- Species variation in steroid hormone-related gene expression contributes to species diversity in sexually dimorphic communication in electric fishes.Hormones and behavior · 2024Article
- Potential Implications of Acid-Sensing Ion Channels ASIC2 and ASIC4 in Gonadal Differentiation ofAnimals : an open access journal from MDPI · 2024Article
- Evolution of androgen receptors contributes to species variation in androgenic regulation of communication signals in electric fishes.Molecular and cellular endocrinology · 2023Article
- Neuroendocrine mechanisms contributing to the coevolution of sociality and communication.Frontiers in neuroendocrinology · 2023Review
- Vocal and Electric Fish: Revisiting a Comparison of Two Teleost Models in the Neuroethology of Social Behavior.Frontiers in neural circuits · 2021Review
- Ecotype differences in aggression, neural activity and behaviorally relevant gene expression in cichlid fish.Genes, brain, and behavior · 2020Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
Sexually dimorphic behaviors are often regulated by androgens and estrogens. Steroid receptors and metabolism are control points for evolutionary changes in sexual dimorphism. Electric communication signals of South American knifefishes are a model for understanding the evolution and physiology of sexually dimorphic behavior. These signals are regulated by gonadal steroids and controlled by a simple neural circuit. Sexual dimorphism of the signals varies across species. We used transcriptomics to examine mechanisms for sex differences in electric organ discharges (EODs) of two closely related species, Apteronotus leptorhynchus and Apteronotus albifrons, with reversed sexual dimorphism in their EODs. The pacemaker nucleus (Pn), which controls EOD frequency (EODf), expressed transcripts for steroid receptors and metabolizing enzymes, including androgen receptors, estrogen receptors, aromatase, and 5α-reductase. The Pn expressed mRNA for ion channels likely to regulate the high-frequency activity of Pn neurons and for neuromodulator and neurotransmitter receptors that may regulate EOD modulations used in aggression and courtship. Expression of several ion channel genes, including those for Kir3.1 inward-rectifying potassium channels and sodium channel β1 subunits, was sex-biased or correlated with EODf in ways consistent with EODf sex differences. Our findings provide a basis for future studies to characterize neurogenomic mechanisms by which sex differences evolve.
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