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- W2514337411 abstract "Abstract The molecular mechanisms underlying phenotypic plasticity are not well understood. Identifying mechanisms underlying alternative reproductive tactics (ARTs) in species for which the behavioural and fitness consequences of this variation are well characterized provides an opportunity to integrate evolutionary and mechanistic understanding of the maintenance of variation within populations. In the ocellated wrasse Symphodus ocellatus , the behavioural phenotypes of three distinct male morphs (sneakers, satellites and nesting males), which arise from a single genome, have been thoroughly characterized. To determine the neuroendocrine and genomic mechanisms associated with discrete phenotypic variation and ARTs in S. ocellatus in their natural environment, we constructed a whole‐brain de novo transcriptome and compared global patterns of gene expression between sexes and male morphs. Next, we quantified circulating cortisol and 11‐ketotestosterone (11‐kt), mediators of male reproductive behaviours, as well as stress and gonadal steroid hormone receptor expression in the preoptic area, ventral subpallial division of the telencephalon and dorsolateral telencephalon, critical brain regions for social and reproductive behaviours. We found higher levels of 11‐kt in nesting males and higher levels of cortisol in sneaker males relative to other male morphs and females. We also identified distinct patterns of brain region‐specific hormone receptor expression between males such that most hormone receptors are more highly expressed in satellites and nesting males relative to sneakers and females. Our results establish the neuroendocrine and molecular mechanisms that underlie ART s in the wild and provide a foundation for experimentally testing hypotheses about the relationship between neuromolecular processes and reproductive success." @default.
- W2514337411 created "2016-09-16" @default.
- W2514337411 creator A5018850790 @default.
- W2514337411 creator A5037303158 @default.
- W2514337411 creator A5086739050 @default.
- W2514337411 creator A5091853350 @default.
- W2514337411 date "2016-09-22" @default.
- W2514337411 modified "2023-10-03" @default.
- W2514337411 title "Neuroendocrine profiles associated with discrete behavioural variation in <i>Symphodus ocellatus</i> , a species with male alternative reproductive tactics" @default.
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