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The Relation between Fecundity and Reproductive Investment in Aphids
S. A. Ward, A. F. G. Dixon and P. W. Wellings
Journal of Animal Ecology
Vol. 52, No. 2 (Jun., 1983), pp. 451-461
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/4565
Page Count: 11
You can always find the topics here!Topics: Fecundity, Ovarioles, Embryos, Financial investments, Mating behavior, Adult insects, Nutrition, Ecological life histories, Insect reproduction, Animal ecology
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(1) Mechanistic models of embryo growth are described and tested using the results of experiments on Aphis fabae. (2) Increasing reproductive investment during nymphal development (measured as ovariole number) increases potential fecundity on nutrient-rich hosts. (3) Increasing ovariole number increases the total cost of embryo maintenance and thus reduces the resources available for embryo growth. (4) This means that on poor hosts the correlation between fecundity and ovariole number is negative.
Journal of Animal Ecology © 1983 British Ecological Society