{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T01:35:03Z","timestamp":1772156103989,"version":"3.50.1"},"reference-count":51,"publisher":"The Royal Society","issue":"2015","license":[{"start":{"date-parts":[[2024,1,17]],"date-time":"2024-01-17T00:00:00Z","timestamp":1705449600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2024,1,17]],"date-time":"2024-01-17T00:00:00Z","timestamp":1705449600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000923","name":"Australian Research Council","doi-asserted-by":"crossref","award":["FT110100082"],"award-info":[{"award-number":["FT110100082"]}],"id":[{"id":"10.13039\/501100000923","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100000923","name":"Australian Research Council","doi-asserted-by":"crossref","award":["LP150100479"],"award-info":[{"award-number":["LP150100479"]}],"id":[{"id":"10.13039\/501100000923","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100006793","name":"Harvey Mudd College","doi-asserted-by":"crossref","award":["Undergraduate Research Opportunities Program"],"award-info":[{"award-number":["Undergraduate Research Opportunities Program"]}],"id":[{"id":"10.13039\/100006793","id-type":"DOI","asserted-by":"crossref"}]},{"name":"National Science Foundation","award":["DMS--1757952"],"award-info":[{"award-number":["DMS--1757952"]}]},{"name":"National Science Foundation","award":["DMS--1902818"],"award-info":[{"award-number":["DMS--1902818"]}]}],"content-domain":{"domain":["royalsocietypublishing.org"],"crossmark-restriction":true},"short-container-title":["Proc. R. Soc. B."],"published-print":{"date-parts":[[2024,1,31]]},"abstract":"<jats:p>\n                    Swarming locusts present a quintessential example of animal collective motion. Juvenile locusts march and hop across the ground in coordinated groups called hopper bands. Composed of up to millions of insects, hopper bands exhibit aligned motion and various collective structures. These groups are well-documented in the field, but the individual insects themselves are typically studied in much smaller groups in laboratory experiments. We present, to our knowledge, the first trajectory data that detail the movement of individual locusts within a hopper band in a natural setting. Using automated video tracking, we derive our data from footage of four distinct hopper bands of the Australian plague locust,\n                    <jats:italic>Chortoicetes terminifera<\/jats:italic>\n                    . We reconstruct nearly 200 000 individual trajectories composed of over 3.3 million locust positions. We classify these data into three motion states: stationary, walking and hopping. Distributions of relative neighbour positions reveal anisotropies that depend on motion state. Stationary locusts have high-density areas distributed around them apparently at random. Walking locusts have a low-density area in front of them. Hopping locusts have low-density areas in front and behind them. Our results suggest novel insect interactions, namely that locusts change their motion to avoid colliding with neighbours in front of them.\n                  <\/jats:p>","DOI":"10.1098\/rspb.2023.2121","type":"journal-article","created":{"date-parts":[[2024,1,16]],"date-time":"2024-01-16T19:05:50Z","timestamp":1705431950000},"update-policy":"https:\/\/doi.org\/10.1098\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Anisotropic interaction and motion states of locusts in a hopper band"],"prefix":"10.1098","volume":"291","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8958-5038","authenticated-orcid":true,"given":"Jasper","family":"Weinburd","sequence":"first","affiliation":[{"name":"Mathematics Department, Hamline University, Saint Paul, MN 55104, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jacob","family":"Landsberg","sequence":"additional","affiliation":[{"name":"Department of Physics and Astronomy, Haverford College, Haverford, PA 19041, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anna","family":"Kravtsova","sequence":"additional","affiliation":[{"name":"Department of Mathematics, Harvey Mudd College, Claremont, CA 91711, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shanni","family":"Lam","sequence":"additional","affiliation":[{"name":"Department of Mathematics, Harvey Mudd College, Claremont, CA 91711, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tarush","family":"Sharma","sequence":"additional","affiliation":[{"name":"Department of Mathematics, Harvey Mudd College, Claremont, CA 91711, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0256-7687","authenticated-orcid":true,"given":"Stephen J.","family":"Simpson","sequence":"additional","affiliation":[{"name":"School of Life and Environmental Sciences, University of Sydney, Sydney, New South Wales 2006, Australia"},{"name":"Charles Perkins Centre, University of Sydney, Sydney, New South Wales 2006, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2094-2436","authenticated-orcid":true,"given":"Gregory A.","family":"Sword","sequence":"additional","affiliation":[{"name":"Department of Entomology, Texas A&amp;M University, College Station, TX 77843, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7506-6835","authenticated-orcid":true,"given":"Camille","family":"Buhl","sequence":"additional","affiliation":[{"name":"School of Agriculture, Food and Wine, University of Adelaide, Adelaide, Southern Australia 5005, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"175","published-online":{"date-parts":[[2024,1,17]]},"reference":[{"key":"e_1_3_8_2_2","volume-title":"Grasshoppers and locusts","author":"Uvarov B","year":"1977","unstructured":"Uvarov B. 1977 Grasshoppers and locusts, vol. 2. 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