ニシモリ　ヒラク   NISHIMORI HIRAKU   西森　拓    所属   明治大学研究・知財戦略機構・農場  研究・知財戦略機構    職種   特任教授
言語種別	英語
発行・発表の年月	2019/06
形態種別	学術雑誌
標題	Verification of mathematical models of response threshold through statistical characterisation of the foraging activity in ant societies.
執筆形態	共著(筆頭者以外)
掲載誌名	Scientific reports
掲載区分	国外
巻・号・頁	9(1),pp.8845
担当区分	最終著者
著者・共著者	Yamanaka Osamu, Shiraishi Masashi, Awazu Akinori, Nishimori Hiraku
概要	The response threshold (RT) concept explains how social insects allocate tasks, with individual workers responding differently to task-related stimuli. A mathematical RT model has been proposed, but its applicability remains unclear. To evaluate it, researchers used an automated system to track movements between the nest and foraging area in five colonies of Camponotus japonicus ants. They analyzed (i) how foraging labor was distributed and (ii) the stability of individual foraging rankings. Results showed that a few ants did most of the foraging, following a generalized gamma distribution. Rankings of foraging activity were stable for about a month but broke down within a few months. The findings suggest that careful, data-based evaluation of RT models is necessary.
DOI	10.1038/s41598-019-45367-w
ISSN	2045-2322
PMID	31222162