Summary
Simulation studies were performed to analyze factors affecting the population dynamics of the system with the greenhouse whitefly (Trialeurodes vaporariorum Westwood) and the parasitoidEncarsia formosa Gahan and to develop strategies for the introduction ofE. formosa. The reduction of parasitization efficiency with an increase in parasitoid density promotes the stability of the system, which coincides with the prediction from current theory. The stability of the system is also shown to be promoted by the effect of host feeding. The population levels of the system are remarkably suppressed with an increase in searching efficiency and a decrease in host oviposition. The control effect of the parasitoids is enhanced when the number of parasitoids is divided among many introductions. An optimal time, an optimal density ratio of parasitoids to hosts and optimal densities of hosts and parasitoids exist in the introduction programme of parasitoids.
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References
Burnett, T. (1960) Effects of initial densities and periods of infestation of the growth-forms on a host and parasite population.Can. J. Zool. 38: 1063–1077.
Burnett, T. (1967) Aspects of the interaction between a chalcid parasite and its aleurodid host.Can. J. Zool. 45: 539–578.
Ekbom, B. S. (1977) Development of a biological control program for greenhouse whiteflies (Trialeurodes vaporariorum Westwood) using its parasiteEncarsia formosa (Gahan) in Sweden.Z. ang. Ent. 84: 145–154.
Foster, G. N. andA. Kelly (1978) Initial density of glasshouse whitefly (Trialeurodes vaporariorum (Westwood), Hemiptera) in relation to the success of suppression byEncarsia formosa Gahan (Hymenoptera) on glasshouse tomatoes.Hort. Res. 18: 55–62.
Hassell, M. P. (1971) Mutual interference between searching insect parasites.J. Anim. Ecol. 40: 473–486.
Hassell, M. P. (1978)The Dynamics of Arthropod Predator-Prey Systems. Princeton University press, Princeton.
Hassell, M. P. andR. M. May (1973) Stability in insect host-parasite models.J. Anim. Ecol. 42: 693–726.
Hassell, M. P. andJ. K. Waage (1984) Host-parasitoid population interactions.Ann. Rev. Entomol. 29: 89–114.
Jervis, M. A. andN. A. C. Kidd (1986) Host-feeding strategies in hymenopteran parasitoids.Biol. Rev. 61: 395–434.
Parr, W. J., H. J. Gould, N. H. Jessop andF. A. B. Ludlam (1976) Progress towards a biological control programme for glasshouse whitefly (Trialeurodes vaporariorum) on tomatoes.Ann. appl. Biol. 83: 349–363.
Pimm, S. L. (1984) The complexity and stability of ecosystems.Nature 307: 321–326.
Yano, E. (1988) Population studies of the greenhouse whitefly, (Trialeurodes vaporariorum Westwood) and the parasitoidEncarsia formosa Gahan.Bull. Natl. Res. Inst. Veg. Ornam. Plants & Tea A.2: 143–200. (in Japanese with English summary).
Yano, E. (1989) A simulation study of population interaction between the greenhouse whitefly,Trialeurodes vaprrariorum Westwood (Homoptera: Aleyrodidae), and the parasitoidEncarsia formosa Gahan (Hymenoptera: Aphelinidae). I. Description of the model.Res. Popul. Ecol. 31: 73–88.
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Yano, E. A simulation study of population interaction between the greenhouse whitefly,Trialeurodes vaporariorum Westwood (Homoptera: Aleyrodidae) and the parasitoidEncarsia formosa Gahan (Hymenoptera: Aphelinidae) II. Simulation analysis of population dynamics and strategy of biological control. Res Popul Ecol 31, 89–104 (1989). https://doi.org/10.1007/BF02515807
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DOI: https://doi.org/10.1007/BF02515807