Prolactin and prolactin receptor expression in the HPG axis and crop during parental care in both sexes of a biparental bird (Columba livia)

Victoria S Farrar,Rayna M Harris,Suzanne H Austin, Brandon M Nava Ultreras,April M Booth,Frédéric Angelier,Andrew S Lang, Tanner Feustel,Candice Lee,Annie Bond,Matthew D MacManes,Rebecca M Calisi

General and Comparative Endocrinology（2022）

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摘要

•Hypothalamic prolactin receptors (PRLR) increase when offspring added mid-incubation.•Gonad PRL increased and PRLR decreased in both sexes in response to offspring cues.•Crop PRLR driven by circulating prolactin and peaks at hatch; facilitates “lactation”.•Plasma prolactin higher in females, but males have higher PRLR in tissues.•Sex differences in PRL vs PRLR may allow sexes to converge on parental phenotype.

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关键词

Parental care,Prolactin receptors,Prolactin,Extra-pituitary prolactin,Sex differences,Reproduction,Rock dove,HPG axis,Hypothalamic-pituitary-gonadal axis,qPCR,RNAseq,Ovaries,Testes,Pituitary,Hypothalamus

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