caa a22 4500 397571666 CHVBK 20180308164843.0 cr unu---uuuuu 161202e19960201xx s 000 0 eng 10.1093/ee/25.1.155 doi (NATIONALLICENCE)oxford-10.1093/ee/25.1.155 Trade-Offs in Body Weights, Egg Loads, and Fat Reserves of Field-Collected Podisus maculiventris (Heteroptera: Pentatomidae) [Elektronische Daten] [Jesusa Crisostomo Legaspi, Robert J. O'Neil, Benjamin C. Legaspi] The spined soldier bug, Podisus maculiventris (Say), was collected in 8 field sites in Indiana during the summers of 1987-1989. The insects were collected using both pheromone traps and sweep nets. Insect weights were recorded for all 3 yrs, and egg loads and lipid content in the fat body were recorded for 1988 and 1989. Analysis of the weights revealed that females were heavier than males. Female body weight, egg load, and lipid content were compared against corresponding measurements of predators subjected to different prey regimens in the laboratory. These comparisons indicate that field populations often had measurements similar to predators provided 1 prey item every 3-9 d. Predators collected during the summer of 1988 revealed higher mean lipid content, smaller egg loads, and lower weights than those collected in 1989. These traits, together with the relative scarcity of predators found in 1988, suggest that the predators were responding to greater food stress by conserving energy reserves in the fat body and diverting them away from reproduction. We discuss possible implications of these observations. © 1996 Entomological Society of America Physiological and Chemical Ecology nationallicence Podisus maculiventris nationallicence lipids nationallicence fat reserves nationallicence trade-off nationallicence Legaspi Jesusa Crisostomo Biological Control of Pests Research Unit, USDA, ARS-Subtropical Agricultural Research Laboratory, 2413 East Highway 83, Weslaco, TX 78596 aut O'Neil Robert J. Biological Control of Pests Research Unit, USDA, ARS-Subtropical Agricultural Research Laboratory, 2413 East Highway 83, Weslaco, TX 78596 aut Legaspi Benjamin C. Biological Control of Pests Research Unit, USDA, ARS-Subtropical Agricultural Research Laboratory, 2413 East Highway 83, Weslaco, TX 78596 aut Environmental Entomology Oxford University Press 25/1(1996-02-01), 155-164 0046-225X 25:1<155 1996 25 ee https://doi.org/10.1093/ee/25.1.155 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.1.155 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Legaspi Jesusa Crisostomo Biological Control of Pests Research Unit, USDA, ARS-Subtropical Agricultural Research Laboratory, 2413 East Highway 83, Weslaco, TX 78596 aut NATIONALLICENCE 700 1- O'Neil Robert J. Biological Control of Pests Research Unit, USDA, ARS-Subtropical Agricultural Research Laboratory, 2413 East Highway 83, Weslaco, TX 78596 aut NATIONALLICENCE 700 1- Legaspi Benjamin C. Biological Control of Pests Research Unit, USDA, ARS-Subtropical Agricultural Research Laboratory, 2413 East Highway 83, Weslaco, TX 78596 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/1(1996-02-01), 155-164 0046-225X 25:1<155 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford