Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-23T13:11:47.400Z Has data issue: false hasContentIssue false
  • English
  • Français

Effects of dietary carbohydrate on the nutritional physiology and blood sugar level of Trichoplusia ni parasitized by the insect parasite, Hyposoter exiguae

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
Get access Rights & Permissions [Opens in a new window]

Summary

The effects of parasitization by Hyposoter exiguae on the nutritional physiology of Trichoplusia ni were influenced by the dietary sucrose level. The results confirmed that host nutrition plays a significant role in the manifestation of parasitic infection during the insect parasite-host association. Increased dietary sucrose level resulted in an increase in haemolymph trehalose concentration in both control and parasitized insects, but the increase was greater in the latter group. However, when the sucrose level was increased without energetic compensation and the dietary casein level was maintained constant, the haemolymph trehalose concentration was affected very little in unparasitized individuals but was markedly elevated in parasitized hosts. This result suggests that the de novo synthesis of carbohydrate in parasitized T. ni may not be regulated by dietary sugar intake.

Type
Research Article
Information
Parasitology , Volume 92 , Issue 1 , February 1986 , pp. 25 - 30
Copyright
Copyright © Cambridge University Press 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Dahlman, D. L. (1975). Trehalose and glucose levels in hemolymph of diet-reared, tobacco leaf-reared and parasitized tobacco hormworm larvae. Comparative Biochemistry and Physiology 50A, 165–7.CrossRefGoogle ScholarPubMed
Friedman, B., Goodman, E. H. & Weinhouse, S. (1967). Effects of insulin and fatty acidson gluconeogenesis in the rat. Journal of Biological Chemistry 242, 3620–7.CrossRefGoogle Scholar
Ignoffo, C. M. (1966). Insect viruses. In Insect Colonization and Mass Production (ed. Smith, C. M.), pp. 501–30. New York: Academic Press.CrossRefGoogle Scholar
Immamura, M., Clowes, G. H. A., Blackburn, G. L., O'Donnell, T. F., Trerice, M., Bhimjee, Y. & Ryan, N. T. (1975). Liver metabolism and glucogenesis in trauma and sepsis. Surgery 77, 868–80.Google Scholar
Long, C. L., Kinney, J. M. & Geiger, J. W. (1976). Nonsuppressability of gluconeogenesis by glucose in septic patients. Metabolism 25, 193–201.CrossRefGoogle ScholarPubMed
Nettles, W. C., Parro, B., Sharbaugh, C. & Mangum, C. L. (1971). Trehalose and other carbohydrates in Anthonomus grandis, Heliothis zea and Heliothis virescens during growth and development. Journal of Insect Physiology 17, 657–75.CrossRefGoogle Scholar
Rocha, D. M., Santeanio, F., Faloona, G. R. & Unger, R. H. (1973). Abnormal pancreatic alpha-cell function in bacterial infections. New England Journal of Medicine 288, 700.CrossRefGoogle ScholarPubMed
Thompson, S. N. (1982). 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. (1983). The nutritional physiology of Trichoplusia ni parasitized by the insect parasite, Hyposoter exiguae, and the effects of parallel-feeding. Parasitology 87, 15–28.CrossRefGoogle Scholar
Thompson, S. N. (1985). The effects of fructose 2,6-bisphosphate and AMP on fructose 1, 6-bisphosphatase activity in Trichoplusia ni parasitized by the insect parasite Hyposoter exiguae. Journal of Parasitology 71, 117–19.CrossRefGoogle Scholar
Thompson, S. N. & Binder, B. F. (1984). Altered carbohydrate levels and gluconeogenic enzymic activity in Trichoplusia ni parasitized by the insect parasite, Hyposoter exiguae. Journal of Parasitology 70, 644–51.CrossRefGoogle Scholar
Van Schaftingen, E. & Hers, H. G. (1981). Inhibition of fructose 1, 6-bisphosphatase by fructose 2,6-bisphosphate. Proceedings of the National Academy of Sciences, USA 78, 2861–3.CrossRefGoogle Scholar