ArticleHormones and behavior2023
Does the syrinx, a peripheral structure, constrain effects of sex steroids on behavioral sex reversal in adult canaries?
Article in Hormones and behavior, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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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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Who cites it
5 citing papers in PubMed, 8 citations in OpenAlex.
- Neck muscle twitch properties are associated with constraint on drum speed in woodpeckers, but not drum length.The Journal of experimental biology · 2025Article
- Neurochemical Characterization of Dopaminoceptive Cells in Song Control Nuclei of Canaries and Their Activation During Song Production: A Multiplex Fluorescent In Situ Hybridization Study.The Journal of comparative neurology · 2024Article
- Androgen signaling in LMAN regulates song stereotypy in male canaries.Hormones and behavior · 2024Article
- Contribution of birds to the study of sexual differentiation of brain and behavior.Hormones and behavior · 2023Article
- Sex differences in song syntax and syllable diversity in testosterone-induced songs of adult male and female canaries.Biology of sex differences · 2023Article
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Authors and funding
5 authors at 3 institutions in 3 countries.
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Abstract
We previously confirmed that effects of testosterone (T) on singing activity and on the volume of brain song control nuclei are sexually differentiated in adult canaries: females are limited in their ability to respond to T as males do. Here we expand on these results by focusing on sex differences in the production and performance of trills, i.e., rapid repetitions of song elements. We analyzed >42,000 trills recorded over a period of 6 weeks from 3 groups of castrated males and 3 groups of photoregressed females that received Silastic™ implants filled with T, T plus estradiol or left empty as control. Effects of T on the number of trills, trill duration and percent of time spent trilling were all stronger in males than females. Irrespective of endocrine treatment, trill performance assessed by vocal deviations from the trill rate versus trill bandwidth trade-off was also higher in males than in females. Finally, inter-individual differences in syrinx mass were positively correlated with specific features of trills in males but not in females. Given that T increases syrinx mass and syrinx fiber diameter in males but not in females, these data indicate that sex differences in trilling behavior are related to sex differences in syrinx mass and syrinx muscle fiber diameter that cannot be fully suppressed by sex steroids in adulthood. Sexual differentiation of behavior thus reflects organization not only of the brain but also of peripheral structures.
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