The role of intra-specific mechanisms and predation in regulating the numbers of the lime aphid, Eucallipterus tiliae L.
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Analysis of changes in numbers of the lime aphid, Eucallipterus tiliae L., reveals that there is an overcompensated density dependent factor acting within years, and an inverse density dependent factor acting between years. Because of its effect on the aphid's rate of development and reproduction the variation in temperature from year to year acts as a density disturbing factor.
There is no evidence from laboratory experiments to suggest that the quality of its food influences the numbers of the lime aphid. However, qualitative changes in the aphid following period of aphid abundance are shown to be important in the overcompensated density dependent response. The more prevalent insect predators influence the regulating process as they eat most of the aphids that remain after an aphid population has declined from a very high level of abundance. Their action results in a more overcompensated response than would occur in their absence.
KeywordsLime Laboratory Experiment Qualitative Change Aphid Population Dependent Factor
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- Clark, P.J., Evans, F.C.: Distance to nearest neighbour as a measure of spatial relationships in populations. Ecology 35, 445–453 (1954).Google Scholar
- Dempster, J. P.: The population dynamics of grasshoppers and locusts. Biol. Rev. 38, 490–529 (1963).Google Scholar
- Dixon, A. F. G.: Reproductive activity of the sycamore aphid, Drepanosiphum platanoides (Schr.) (Hemiptera, Aphididae). J. anim. Ecol. 32, 33–48 (1963).Google Scholar
- —: Population dynamics of the sycamore aphid, Drepanosiphum platanoides (Schr.) (Hemiptera: Aphididae): Migratory and trivial flight activity. J. anim. Ecol. 38, 585–606 (1969).Google Scholar
- —: Stabilization of aphid populations by an aphid induced plant factor. Nature (Lond.) 227, 1368–1369 (1970a).Google Scholar
- —: Quality and availability of food for a sycamore aphid population. In: Animal populations in relation to their food resources, ed. by A. Watson, p. 271–287. Oxford: Blackwell Scientific Publications 1970b.Google Scholar
- —: The role of aphids in wood formation II. The effect of the lime aphid, Eucallipterus tiliae L. (Aphidiae), on the growth of lime, Tilia×vulgaris Hayne. J. appl. Ecol. 8, 393–399 (1971a).Google Scholar
- —: The life cycle and host preferences of th bird cherry-oat aphid, Rhopalosiphum padi L., and their bearing on the theories of host alternation in aphids. Ann. appl. Biol. 68, 135–147 (1971b).Google Scholar
- — Wratten, S. D.: Aggregation, size and fecundity in the black bean aphid, Aphis fabae Scop. Bull. entomol. Res. 61, 97–111 (1971).Google Scholar
- Hille Ris Lambers, D.: Polymorphism in Aphididae. A. Rev. Ent. 11, 47–78 (1966).Google Scholar
- Lees, A. D.: The control of polymorphism in aphids. Advanc. Insect Physiol. 3, 207–277 (1966).Google Scholar
- Llewellyn, M. J.: The ecological energetics of the lime aphid (Eucallipterus tiliae L.) and its effect on tree growth. Ph. D. thesis, University of Glasgow (1970).Google Scholar
- Noble, M. D.: A simplified clip cage for aphid investigations. Canad. Ent. 90, 760 (1958).Google Scholar
- Shaw, M. J. P.: Effects of population density on alienicolae of Aphis fabae Scop. II. The effects of crowding on the expression of migratory urge among alatae in the laboratory. Ann. appl. Biol. 65, 197–203 (1970).Google Scholar
- Sluss, R. R.: Population dynamics of the walnut aphid, Chromaphis juglandicola (Kalt.) in Northern California. Ecology 48, 41–58 (1967).Google Scholar
- Southwood, T. R. E.: Ecological methods. London: Methuen 1966.Google Scholar
- Varley, G. C.: The concept of energy flow applied to a woodland community. In: Animal populations in relation to their food resources, ed. by A. Watson, p. 389–405. Oxford: Blackwell Scientific Publications 1970.Google Scholar