Optimum body size in aphids
Article first published online: 14 MAR 2008
Volume 19, Issue 2, pages 121–126, May 1994
How to Cite
DIXON, A.F.G. and KINDLMANN, P. (1994), Optimum body size in aphids. Ecological Entomology, 19: 121–126. doi: 10.1111/j.1365-2311.1994.tb00401.x
- Issue published online: 14 MAR 2008
- Article first published online: 14 MAR 2008
- Accepted 22 November 1993
- Adult size;
- birth size;
- mode of feeding;
- optimal body size;
- optimal energy partitioning;
- population growth rate
- 1Smallness in British plant-sucking bugs is associated with feeding on the contents of individual plant cells, especially phloem.
- 2The sizes of species of aphids living in similar habitats and the rates of water loss from those that have and lack a filter chamber do not support the contention that small size in aphids is a means of maximizing the loss of water by cuticular transpiration.
- 3An optimum energy partitioning model, previously developed for aphids, was used to predict the interspecifie relation between adult weight and birth weight that would maximize the population growth rate, rm. Using the observed rm/IRGR ratio (0.8–0.9) and that the gonads are smaller than the soma at birth the predicted relation between the logarithm of the adult weight and the logarithm of the birth weight is linear and has a slope of 1.
- 4The relation between the logarithm of the adult weight and the logarithm of the birth weight for eighteen species of aphids is linear and has a slope of 1.
- 5Birth size differs between species of aphids and in each species is assumed to be the minimum size necessary for feeding. Accepting this constraint then the optimum adult size for maximizing rm is approximately 15 times the birth size.