{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T11:32:02Z","timestamp":1788780722275,"version":"build-2803163510"},"reference-count":67,"publisher":"The Company of Biologists","issue":"16","license":[{"start":{"date-parts":[[2025,8,14]],"date-time":"2025-08-14T00:00:00Z","timestamp":1755129600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"National Research Foundation of South Africa"},{"name":"Ditsong Museum"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,8,15]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Onymacris plana (Coleoptera: Tenebrionidae) is a black beetle that runs at high speed for a pedestrian insect in direct solar radiation in the Namib Desert, a behaviour expected to impose potentially lethal body temperature within minutes. We measured the body temperature of beetles active in their natural habitat using fine thermocouples inserted into the prothorax. The measurements revealed that when beetles sprinted in conditions of low wind, high radiation and moderate ambient temperature, their body temperature dropped rather than rose. The effect depended on convective cooling and efficient locomotion, i.e. sprinting with low energy expenditure. We confirmed the convection effect in the laboratory by exposing beetles to combinations of radiation, air temperature and wind speed comparable to those found in the Namib Desert and simulating the forced convection of running in a headwind. Under these simulated conditions, peak radiation caused the temperature of stationary male beetles to rise at about 6\u00b0C min\u22121 and females at almost 4\u00b0C min\u22121. However, in wind-calm conditions at peak radiation, the convection of simulated running dropped the equilibrium body temperature of live beetles by about 13\u00b0C. We believe that ours is the first report of exercise-induced cooling in a pedestrian animal and that O. plana's diurnal lifestyle depends on that exercise-induced cooling.<\/jats:p>","DOI":"10.1242\/jeb.250379","type":"journal-article","created":{"date-parts":[[2025,7,9]],"date-time":"2025-07-09T15:38:43Z","timestamp":1752075523000},"source":"Crossref","is-referenced-by-count":4,"title":["Beetling the heat \u2013 the diurnal Namib Desert beetle\n                    <i>Onymacris plana<\/i>\n                    cools by running"],"prefix":"10.1242","volume":"228","author":[{"given":"Carole S.","family":"Roberts","sequence":"first","affiliation":[{"name":"Gobabeb Namib Research Institute 1 , Walvis Bay 13013 ,","place":["Namibia"]},{"name":"Brain Function Research Group, School of Physiology, University of the Witwatersrand 2 , Braamfontein 2000, Johannesburg ,","place":["South Africa"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elizabeth L.","family":"McClain","sequence":"additional","affiliation":[{"name":"Gobabeb Namib Research Institute 1 , Walvis Bay 13013 ,","place":["Namibia"]},{"name":"Brain Function Research Group, School of Physiology, University of the Witwatersrand 2 , Braamfontein 2000, Johannesburg ,","place":["South Africa"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mary K.","family":"Seely","sequence":"additional","affiliation":[{"name":"Gobabeb Namib Research Institute 1 , Walvis Bay 13013 ,","place":["Namibia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8989-4773","authenticated-orcid":false,"given":"Duncan","family":"Mitchell","sequence":"additional","affiliation":[{"name":"Brain Function Research Group, School of Physiology, University of the Witwatersrand 2 , Braamfontein 2000, Johannesburg ,","place":["South Africa"]},{"name":"School of Human Sciences, University of Western Australia 3 , Perth WA 6009 ,","place":["Australia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9448-5664","authenticated-orcid":false,"given":"Victoria L.","family":"Goodall","sequence":"additional","affiliation":[{"name":"Nelson Mandela University 4 Department of Statistics , , Gqeberha 6031 ,","place":["South Africa"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7122-2768","authenticated-orcid":false,"given":"Joh R.","family":"Henschel","sequence":"additional","affiliation":[{"name":"Gobabeb Namib Research Institute 1 , Walvis Bay 13013 ,","place":["Namibia"]},{"name":"South African Environmental Observation Network 5 , Kimberley 8301 ,","place":["South Africa"]},{"name":"Centre for Environmental Management, University of the Free State 6 , Bloemfontein 9301 ,","place":["South Africa"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"237","published-online":{"date-parts":[[2025,8,14]]},"reference":[{"key":"2025081410500011100_JEB250379C1","doi-asserted-by":"publisher","first-page":"65","DOI":"10.1242\/jeb.73.1.65","article-title":"Endothermy in African dung beetles during flight, ball making, and ball rolling","volume":"73","author":"Bartholomew","year":"1978","journal-title":"J. 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