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Lett."],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:p>\n                    Social insects can sense colony size\u2014even without visual information in a dark environment. How they achieve this is yet largely unknown. We empirically tested a hypothesis on the proximate mechanism using ant colonies. In\n                    <jats:italic>Diacamma<\/jats:italic>\n                    colonies, the monogynous queen is known to increase the effort devoted to queen pheromone transmission behaviour (patrolling) as the colony grows, as if she perceives colony size. The negative feedback hypothesis assumes that, through repeated physical contact with workers, the queen monitors the physiological state (fertility) of workers and increases her patrolling effort when she encounters more fertile workers. Supporting this hypothesis, we found that the queen increased her patrolling effort in response to a higher ratio of fertile workers under the experimental condition of constant colony size. Furthermore, chemical analyses and bioassays suggested that cuticular hydrocarbons have queen pheromone activity and can mediate the observed queen\u2013worker communication of fertility state. Such a self-organizing mechanism of sensing colony size may also operate in other social insects living in small colonies.\n                  <\/jats:p>","DOI":"10.1098\/rsbl.2024.0102","type":"journal-article","created":{"date-parts":[[2024,6,18]],"date-time":"2024-06-18T19:06:14Z","timestamp":1718737574000},"update-policy":"https:\/\/doi.org\/10.1098\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Test of the negative feedback hypothesis of colony size sensing in social insects"],"prefix":"10.1098","volume":"20","author":[{"given":"T.","family":"Kikuchi","sequence":"first","affiliation":[{"name":"Marine Biosystems Research Center, Chiba University, Tokawa 1 , Choshi City, Chiba 288-0014, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Y.","family":"Hayashi","sequence":"additional","affiliation":[{"name":"Biomedical Sciences and Biomedical Engineering, School of Biological Sciences, University of Reading, Reading , Berkshire RG6 6AH, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Y.","family":"Fujito","sequence":"additional","affiliation":[{"name":"Division of Analytical and Measuring Instruments, Shimadzu Corporation, 1 Kuwabaracho Nishinokyo Nakagyo-ku , Kyoto 604-8511, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N.","family":"Fujiwara-Tsujii","sequence":"additional","affiliation":[{"name":"Division of Core Technology for Pest Control Reserach, Institute for Plant Protection, National Agriculture and Food Research Organization , Tsukuba, Ibaraki 305-8666, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Kawabata","sequence":"additional","affiliation":[{"name":"Department of Biology, Toyama University , Toyama 930-8555, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.","family":"Sugawara","sequence":"additional","affiliation":[{"name":"Department of Information Science, Faculty of Liberal Arts, Tohoku-gakuin University, 2-1-1, Tenjinzawa, Izumi , Sendai, Miyagi 981-3193, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R.","family":"Yamaoka","sequence":"additional","affiliation":[{"name":"Division of Applied Biology, Graduate School of Science and Technology, Kyoto Institute of Technology (Emeritus) , Kyoto 606-8287, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2027-8582","authenticated-orcid":true,"given":"Kazuki","family":"Tsuji","sequence":"additional","affiliation":[{"name":"Department of Subtropical Agro-Environmental Sciences, University of the Ryukyus , Nishihara, Okinawa 903-0213, Japan"},{"name":"Environmental Sciences and Concervation Biology, The United Graduate School of Agricultural Sciences, Kagoshima University , Kagoshima 890-0065, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"175","published-online":{"date-parts":[[2024,6,19]]},"reference":[{"key":"e_1_3_8_2_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.0014-3820.2004.tb00476.x"},{"key":"e_1_3_8_3_2","doi-asserted-by":"publisher","DOI":"10.1093\/acprof:oso\/9780199231157.001.0001"},{"key":"e_1_3_8_4_2","volume-title":"The insect societies","author":"Wilson EO","year":"1971","unstructured":"Wilson EO . 1971 The insect societies. 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