caa a22 4500 397547455 CHVBK 20180308164742.0 cr unu---uuuuu 161202e19960101xx s 000 0 eng 10.1093/aesa/89.1.148 doi (NATIONALLICENCE)oxford-10.1093/aesa/89.1.148 Bushman David W. Department of Science, Mount Saint Marys College, Emmitsburg, MD 21727. Effects of Age and Meal Composition on Feeding Behavior and Postfeeding Diuresis in Adult Helicoverpa zea (Lepidoptera: Noctuidae) [Elektronische Daten] [David W. Bushman] The effects of age and meal composition on feeding behavior and postfeeding diuresis in corn earworm moths have been investigated. Meal size is governed by the type of sugar present and its concentration, and postfeeding weight loss appears to be regulated by the effect of the ingested meal on hemolymph osmolarity by the control of crop emptying. For each age group tested, meal size increased with increasing sucrose concentration. Meal size also increased with insect age at any given sucrose concentration. High concentrations of ingested sucrose resulted in an increase in hemolymph osmolarity, and a reduction in crop emptying and subsequent postfeeding weight loss. Intrahemocoelic injection of glucose or trehalose following low-concentration sucrose meals was also effective in reducing postfeeding weight loss. Glucose and fructose meals were usually smaller than sucrose meals, but the patterns of postfeeding diuresis were similar. These results strongly suggest that there is a postdigestion control site for the regulation of postfeeding diuresis in this insect, and that hemolymph osmolarity and its effect on crop emptying serve to control the processing of a meal following feeding. © 1996 Entomological Society of America Behavior nationallicence Helicoverpa zea nationallicence feeding behavior nationallicence diuresis nationallicence Annals of the Entomological Society of America Oxford University Press 89/1(1996-01-01), 148-152 0013-8746 89:1<148 1996 89 aesa https://doi.org/10.1093/aesa/89.1.148 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/aesa/89.1.148 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Bushman David W. Department of Science, Mount Saint Marys College, Emmitsburg, MD 21727 NATIONALLICENCE 773 0- Annals of the Entomological Society of America Oxford University Press 89/1(1996-01-01), 148-152 0013-8746 89:1<148 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