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The nutritional physiology of Trichoplusia ni parasitized by the insect parasite, Hyposoter exiguae, and the effects of parallel-feeding

Published online by Cambridge University Press:  06 April 2009

S. N. Thompson
S. N. Thompson
Affiliation:
Division of Biological Control, University of California, Riverside, California, 92521
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Summary

Host nutrition plays a major role in the nutritional physiology of Trichoplusia ni parasitized by the hymenopterous insect parasite, Hyposoter exiguae. Severely reduced growth rate characterized the host association throughout the 4th developmental stadium. This effect of parasitization, however, was indirect and growth depression of parasitized larvae was entirely accounted for by the accompanying decreased rate of food consumption. Parallel-fed larvae, that is, unparasitized larvae feeding on nutrients at the same rate as observed in ad libitum-fed parasitized individuals, displayed lower rates of growth than parasitized larvae and the latter had higher rates of assimilation. Parasitization, therefore, directly resulted in an increased rate of assimilation over that observed in uninfected insects after accounting for the effects of altered food consumption. Similarly, differences in the pattern of response to decreased dietary protein levels between parasitized and unparasitized insects could be explained on the basis of differences in their rates of food consumption

Type
Research Article
Information
Parasitology , Volume 87 , Issue 1 , August 1983 , pp. 15 - 28
Copyright
Copyright © Cambridge University Press 1983

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References

REFERENCES

Castro, G. A., Copeland, E. M., Dudrick, S. J. & Ramaswamy, K. (1979). Enteral and parenteral feeding to evaluate malabsorption in intestinal parasitism. American Journal of Tropical Medicine and Hygiene 28, 500–7.CrossRefGoogle ScholarPubMed
Crompton, D. W. T. & Hall, A. (1981). Parasitic infection and host nutrition. Third European Multicolloquium of Parasitology, Parasitology 82(4), 31–48.Google Scholar
Crompton, D. W. T. & Nesheim, M. C. (1982). Nutritional science and parasitology: A case for collaboration. Bioscience 32, 677–80.CrossRefGoogle Scholar
Crompton, D. W. T., Walters, D. E. & Arnold, S. (1981). Changes in the food intake and body weight of protein-malnourished rats infected with Nippostrongylus brasiliensis (Nematoda). Parasitology 82, 23–38.Google Scholar
Forsum, E., Nesheim, M. C. & Crompton, D. W. T. (1981). Nutritional aspects of Ascaris infection in young protein-deficient pigs. Parasitology 83, 497–512.Google Scholar
Gordon, H. T. (1968). Quantitative aspects of insect nutrition. American Zoologist 8, 131–8.CrossRefGoogle ScholarPubMed
Gordon, H. T. (1972). Interpretations of insect quantitative nutrition. In Insect and Mite Nutrition (ed. Rodriguez, G.), pp. 73–105. London: North-Holland.Google Scholar
Guillot, F. S. & Vinson, S. B. (1973). Effect of parasitism by Cardiochiles nigriceps on food consumption and utilization by Heliothis virescens. Journal of Insect Physiology 19, 2073–82.Google Scholar
Ionoffo, C. M. (1966). Insect viruses. In Insect Colonization and Mass Production (ed. Smith, C. M.), pp. 501–30. New York: Academic Press.Google Scholar
Iwantsch, G. F. & Smilowitz, Z. (1975). Relationships between the parasitoid, Hyposoter exiguae and the cabbage looper, Trichoplusia ni: effects on head capsule width, live and dry weights, and haemolymph specific gravity of hosts at different ages. Canadian Entomologist 107, 927–34.CrossRefGoogle Scholar
Jowyk, E. A. & Smilowitz, Z. (1978). A comparison of growth and developmental rates of the parasite Hyposoter exiguae reared from two instars of its host, Trichoplusia ni. Annals of the Entomological Society of America 71, 467–72.CrossRefGoogle Scholar
Kirk, R. E. (1968). Multiple comparison tests. In Experimental Design: Procedures for the Behavioral Sciences (ed. Kirk, R. E.), pp. 69–98. Belmont, California: Cole Publishing Company.Google Scholar
Roberts, L. S. (1961). The influence of population density on patterns and physiology of growth in Hymenolepis diminuta in the definitive host. Experimental Parasitology 11, 332–71.CrossRefGoogle ScholarPubMed
Shorey, H. H. & Hale, R. L. (1965). Mass-rearing of the larvae of nine noctid species on a simple artificial medium. Journal of Economic Entomology 58, 522–4.CrossRefGoogle Scholar
Smilowitz, Z. & Iwantsch, G. F. (1975). Relationships between the parasitoid Hyposoter exiguae and the cabbage looper, Trichoplusia ni: The effect of host age on ovipositional rate of the parasitoid and successful parasitism. Canadian Entomologist 107, 689–94.CrossRefGoogle Scholar
Stoltz, D. B. & Vinson, S. B. (1979). Viruses and parasitism in insects. Virus Research 24, 125–71.CrossRefGoogle ScholarPubMed
Thompson, S. N. (1982 a). Effects of parasitization by the insect parasite Hyposoter exiguae on the growth, development and physiology of its host Trichoplusia ni. Parasitology 84, 491–510.CrossRefGoogle Scholar
Thompson, S. N. (1982 b). Immediate effects of parasitization by the insect parasite Hyposoter exiguae on the nutritional physiology of its host, Trichoplusia ni. Journal of Parasitology 68, 936–41.CrossRefGoogle Scholar
Thompson, S. N. (1982 c). Exeristes roborator: Quantitative determination of in vitro larval growth rates in synthetic media with different glucose concentrations. Experimental Parasitology 54, 229–34.Google Scholar
Vinson, S. B. (1977). Microplitis croceipes. Inhibition of the Heliothis zea defense reaction to Cardiochiles nigriceps. Experimental Parasitology 41, 112–17.CrossRefGoogle ScholarPubMed