The effects of the Lime aphid, Eucallipterus tiliae L. (Aphididae) on the growth of the Lime Tilia X vulgaris Hayne. I. Energy requirements of the aphid population.
A study of the effects of E. tiliae populations on the growth of two mature Lime trees in Glasgow in 1967 and 1968. The populations turned over the energy equivalent of the standing crop of aphids on average 482 times per year, and the annual energy drain imposed on the trees by this energy turnover was 2672 kcal per m2 of crown cover. The influence of this energy drain on Lime tree communities and its implications for woodland ecosystems are discussed. [Cf. FA 33 No. 1039. KEYWORDS: Hemiptera \ insect pests \ biological aspects \ Therioaphis tiliae \ Tilia X europaea