{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T15:24:44Z","timestamp":1781105084298,"version":"3.54.1"},"reference-count":14,"publisher":"National Academy of Sciences","issue":"3","license":[{"start":{"date-parts":[[2026,1,12]],"date-time":"2026-01-12T00:00:00Z","timestamp":1768176000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"MOST | National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["T2422031"],"award-info":[{"award-number":["T2422031"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"MOST | National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["52275298"],"award-info":[{"award-number":["52275298"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.pnas.org"],"crossmark-restriction":true},"short-container-title":["Proc. Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2026,1,20]]},"abstract":"<jats:p>\n                    Bumblebee (\n                    <jats:italic toggle=\"yes\">Bombus terrestris<\/jats:italic>\n                    ) is a primitively eusocial species that sustains its colonies by dividing foraging duties between queens and workers. Previous research emphasizes hormonal, metabolic, and behavioral contrasts between the castes but seldom considers why queens relinquish foraging once workers emerge. Here, we link foraging efficiency to tongue microstructure, providing physical evidence for the shift in bumblebee foraging behavior.\n                  <\/jats:p>","DOI":"10.1073\/pnas.2527391123","type":"journal-article","created":{"date-parts":[[2026,1,12]],"date-time":"2026-01-12T20:02:21Z","timestamp":1768248141000},"update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":0,"title":["Tongue microstructure physically constrains division of labor in bumblebee foraging"],"prefix":"10.1073","volume":"123","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1876-5373","authenticated-orcid":false,"given":"Zexiang","family":"Huang","sequence":"first","affiliation":[{"name":"School of Advanced Manufacturing, Sun Yat-Sen University","place":["Shenzhen, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shumeng","family":"Wu","sequence":"additional","affiliation":[{"name":"School of Advanced Manufacturing, Sun Yat-Sen 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