?url_ver=Z39.88-2004&rft_id=10.1073%2Fpnas.1917166117&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Alger&rft.aufirst=Ingela&rft.issue=20&rft.volume=117&rft.date=May+2020&rft.issn=1091-6490&rft.atitle=Paternal+provisioning+results+from+ecological+change&rft.title=Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America+(PNAS)&rft.pages=10746-10754&rft.genre=article