Studies on the Bionomics of Summer Generations in California of the Apple Aphid, Aphis pomi De Geer (Homoptera: Aphididae)
- 1 October 1965
- journal article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 97 (10) , 1107-1114
- https://doi.org/10.4039/ent971107-10
Abstract
Populations of the apple aphid, Aphis pomi De Geer, on apple were followed from 1959 to 1961, in Northern California. Population trends were generally upwards during early June and downwards through the remainder of the year. In 1959 a second population rise occurred during August. Populations were correlated with growth pattern of the host.Also of importance in the characteristic decline of the apple aphid during July and August are the emigration of alate forms and predator activity. High temperatures were not thought to be an important mortality factor during the early summer months.Keywords
This publication has 3 references indexed in Scilit:
- Oviposition and Egg Dispersion of the Apple Aphid with Observations on Related Mortality FactorsJournal of Economic Entomology, 1964
- Evaluation of Insecticides and Sampling Methods Against the Apple Aphid, Aphis pomiJournal of Economic Entomology, 1961
- Effect of Caffeine and Other Purines upon the Ribonucleic Acid/Deoxyribonucleic Acid Ratio in Leaves, and the Suitability of these Leaves for AphidsNature, 1958