The distribution of eggs per host in a herbivorous insect--intersection of oviposition, dispersal and population dynamics

The Journal of Animal Ecology
Heinrich Zu Dohna

Abstract

1. The dynamics of parasitic organisms depend critically upon the frequency distribution of parasite individuals per host. However, the processes giving rise to this frequency distribution have rarely been modelled and tested for organisms with complex host selection behaviour. 2. In this study Microrhopala vittata, a chrysomelid beetle, was used to investigate how oviposition behaviour, movement and density of host plants interact in shaping the frequency distribution of egg clusters per host in the field. 3. Enclosures were stocked with two different host species and different beetle densities and various stochastic process models were fitted to egg cluster count data obtained from these enclosures. The different models were derived considering different scenarios, in particular whether or not plant density limits oviposition rate, whether or not ovipositing females actively seek out the most attractive plant within their perception radius and whether a female's oviposition rate is determined by plant intrinsic factors, the plant's egg cluster load or the surrounding beetle density. 4. The model parameters fitted to cage data were used to describe the frequency distribution of egg cluster counts obtained in a release experime...Continue Reading

References

Sep 5, 2001·Journal of Theoretical Biology·X Chen, J E Cohen
Aug 19, 2008·The American Naturalist·I Hanski, M C Singer
Dec 1, 1996·Human Nature : an Interdisciplinary Biosocial Perspective·B S Low

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Citations

Apr 16, 2015·PLoS Neglected Tropical Diseases·Mugenyi AlbertSusan C Welburn

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