caa a22 4500 465826512 CHVBK 20180323112151.0 cr unu---uuuuu 170327e19900801xx s 000 0 eng 10.1007/BF00302599 doi (NATIONALLICENCE)springer-10.1007/BF00302599 Waddington Keith Department of Biology, University of Miami, 33124, Coral Gables, FL, USA aut Foraging profits and thoracic temperature of honey bees ( Apis mellifera ) [Elektronische Daten] [Keith Waddington] Summary: Body temperature and duration of foraging activities were affected by the concentration of sucrose solution imbibed. When experienced foragers of Apis mellifera arrived at a gravity feeder from the hive, thoracic temperature (TTH) was independent of sucrose concentration (X = 36.3 °C). While imbibing 40% and 60% (g solute per g of solution) solutions bees maintained TTH at approximately the same high level as upon arrival, but those imbibing 10%, 20%, and 30% solutions regulated TTH lower (X = 33.5 °C). All bees departed the feeder for the hive at the same TTH (X = 36.1 °C). Bees that imbibed 40% and 60% solutions sometimes immediately took flight after imbibition and averaged less than 15 s to takeoff. Time to takeoff was 2-3 times longer for bees that had imbibed 10% and 20% solutions because warmup preceded takeoff. The rate of energy expenditure at TTH=36.3°C (at 40% and 60% solutions) was 20% greater than that at 33.3°C (at 10%, 20%, and 30% solution). Bees that fed on the highly concentrated solutions regulated TTH so that rate of net energy gain was enhanced, but bees that fed on less concentrated solutions could have increased rate of net gain by maintaining a higher TTH which would have reduced time required for takeoff. The latter bees lowered rate of expenditure of their limited energetic costs and thereby lowered short-term net profits in favor of improved long-term contribution to the colony. Springer-Verlag, 1990 Profitability nationallicence Energetics nationallicence Thermoregulation nationallicence Time budget nationallicence Honeybee nationallicence T A : ambient temperature nationallicence T TH : thoracic temperature nationallicence Journal of Comparative Physiology B Springer-Verlag 160/3(1990-08-01), 325-329 0174-1578 160:3<325 1990 160 360 https://doi.org/10.1007/BF00302599 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00302599 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Waddington Keith Department of Biology, University of Miami, 33124, Coral Gables, FL, USA aut NATIONALLICENCE 773 0- Journal of Comparative Physiology B Springer-Verlag 160/3(1990-08-01), 325-329 0174-1578 160:3<325 1990 160 360 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer