{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["16"],"submitter":["Singh D"],"pubmed_abstract":["Every year as spring approaches and day length increases, many birds begin to reproduce, an annual expression of seasonal phenology that requires physiological preparation. In species distributed over a broad geographic range, populations that breed at higher latitudes are often migratory and delay reproduction until later in the year as compared to those breeding at lower latitudes. Dark-eyed Juncos serve as an excellent model for understanding the timing mechanisms regulating population-level variation in seasonal reproductive responses. We compared two seasonally sympatric dark-eyed junco populations in early spring. One migrates (<i>Junco hyemalis hyemalis</i>) and breeds in Alaska and Canada, while the other remains resident (<i>Junco hyemalis carolinensis</i>) and breeds in the Appal"],"journal":["Frontiers in physiology"],"pagination":["1627516"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12440951"],"repository":["biostudies-literature"],"pubmed_title":["Seasonal divergence in reproductive timing on the verge of spring: comparing hypothalamic transcriptome of two seasonally sympatric North American songbird populations."],"pmcid":["PMC12440951"],"pubmed_authors":["Fudickar AM","Ketterson ED","Singh D"],"additional_accession":[]},"is_claimable":false,"name":"Seasonal divergence in reproductive timing on the verge of spring: comparing hypothalamic transcriptome of two seasonally sympatric North American songbird populations.","description":"Every year as spring approaches and day length increases, many birds begin to reproduce, an annual expression of seasonal phenology that requires physiological preparation. In species distributed over a broad geographic range, populations that breed at higher latitudes are often migratory and delay reproduction until later in the year as compared to those breeding at lower latitudes. Dark-eyed Juncos serve as an excellent model for understanding the timing mechanisms regulating population-level variation in seasonal reproductive responses. We compared two seasonally sympatric dark-eyed junco populations in early spring. One migrates (<i>Junco hyemalis hyemalis</i>) and breeds in Alaska and Canada, while the other remains resident (<i>Junco hyemalis carolinensis</i>) and breeds in the Appal","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025","modification":"2026-04-26T03:20:34.212Z","creation":"2026-04-26T03:11:50.926Z"},"accession":"S-EPMC12440951","cross_references":{"pubmed":["40969921"],"doi":["10.3389/fphys.2025.1627516"]}}