Influence of Temperature on Reproduction, Development, and Intrinsic Rate of Increase of Russian Wheat Aphid, Greenbug, and Bird Cherry-Oat Aphid (Homoptera: Aphididae)

Publisher Website
Google Scholar
Abstract
The effects of constant (1O°C) and fluctuating (5-15°C and I-19°C) temperature regimes on the reproduction, development, and intrinsic rate of increase of the Russian wheat aphid, Diuraphis noxia (Mordvilko), greenbug, Schizaphis graminum Rondani, and the bird cherry-oat aphid, Rhopalosiphum padi Fitch, were studied in the laboratory at an average-temperature regime (1O°C) that is common in the spring when all three of these aphids are found in small grain fields in the Texas Panhandle. Significant differences in nymphal development and total lifespan were observed among species within a temperature regime and among temperature regimes for a species. Natality was highest for D. noxia and R. padi at 5-15°C; S. graminum natality was highest at I-19°C. Estimates of the intrinsic rate of increase (rm,) for the three aphid species were highest at I-19°C (0.188 for D. noxia, 0.144 for S. graminum, and 0.200 and for R. padi).