caa a22 4500 397547099 CHVBK 20180308164741.0 cr unu---uuuuu 161202e19960501xx s 000 0 eng 10.1093/aesa/89.3.442 doi (NATIONALLICENCE)oxford-10.1093/aesa/89.3.442 Behavioral Thermoregulation of Six Namib Desert Tenebrionid Beetle Species (Coleoptera) [Elektronische Daten] [D. Ward, M. K. Seely] We examined the postural adjustments and microhabitat shifts of 6 diurnal tenebrionid beetle species (Tenebrionidae: Adesmiinae) in the Namib Desert under a wide range of environmental conditions. Microhabitat shifts were far more important than postural adjustments for controlling body temperature. Use of standard operative temperature models revealed that 2 species, Physadesmia globosa (Haag) and Onymacris rugatipennis (Haag), maintain the lowest possible body temperatures in the heat of the day by behavioral thermoregulation. Burying behavior frequently occurs at high body temperatures in most species in the heat of the day and may cause a significant reduction in body temperature. However, beetles may prefer to remain surface-active and avoid high temperatures on the substrate by climbing bushes to feed there. Most postural adjustments resulted in no net or a slight positive change in body temperature at high body temperatures. There was no common posture adopted by all species in the same temperature range. Contrary to theory and empirical data for other insect species, we found little evidence that these beetles stilted (elevated the body above the substrate) in order to enhance cooling at high body temperatures. © 1996 Entomological Society of America Behavior nationallicence desert beetles nationallicence Tenebrionidae nationallicence behavioral thermoregulation nationallicence high body temperatures nationallicence Namib Desert nationallicence Ward D. Desert Ecological Research Unit of Namibia, Gobabeb, P.O. Box 1592, Swakopmund 9000, Namibia. aut Seely M. K. Desert Ecological Research Unit of Namibia, Gobabeb, P.O. Box 1592, Swakopmund 9000, Namibia. aut Annals of the Entomological Society of America Oxford University Press 89/3(1996-05-01), 442-451 0013-8746 89:3<442 1996 89 aesa https://doi.org/10.1093/aesa/89.3.442 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/aesa/89.3.442 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ward D. Desert Ecological Research Unit of Namibia, Gobabeb, P.O. Box 1592, Swakopmund 9000, Namibia aut NATIONALLICENCE 700 1- Seely M. K. Desert Ecological Research Unit of Namibia, Gobabeb, P.O. Box 1592, Swakopmund 9000, Namibia aut NATIONALLICENCE 773 0- Annals of the Entomological Society of America Oxford University Press 89/3(1996-05-01), 442-451 0013-8746 89:3<442 1996 89 aesa Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford