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THE DIGESTIVE PROCESSES OF HAEMATOPHAGOUS INSECTS: III. INHIBITION OF TRYPSIN BY HONEY AND THE POSSIBLE FUNCTIONS OF THE OESOPHAGEAL DIVERTICULA OF MOSQUITOES (DIPTERA)

Published online by Cambridge University Press:  31 May 2012

R. H. Gooding
Affiliation:
Department of Entomology, University of Alberta, Edmonton
A. C. Cheung
Affiliation:
Department of Entomology, University of Alberta, Edmonton
B. M. Rolseth
Affiliation:
Department of Entomology, University of Alberta, Edmonton

Abstract

Honey inhibits esterolytic and proteolytic activity of trypsin from Aedes aegypti, Culex pipiens quinquefasciatus, and cattle. The inhibitor is heat stable and only a portion of the inhibition capacity is lost from the honey by dialysis. Glucose, fructose, and sucrose have no effect upon trypsin but ascorbic acid and riboflavin are inhibitory while gluconic acid is an activator. Nectar from lilies but not from honeysuckles inhibits C. pipiens quinquefasciatus trypsin.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1973

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References

Bailey, L. 1952. The action of the proventriculus of the worker honeybee, Apis mellife: a L. J. exp. Biol. 29: 310327.CrossRefGoogle Scholar
SirChristophers, S. R. 1960. Aedes aegypti (L.), the yellow fever mosquito. Cambridge University Press. 739 pp. + xii.Google Scholar
Gooding, R. H. 1966. In vitro properties of proteinases in the midgut of adult Aedes aegypti L. and Culex fatigans (Wiedemann). Comp. Biochem. Physiol. 17: 115127.CrossRefGoogle ScholarPubMed
Gooding, R. H. 1972. The digestive processes of haematophagous insects. I. A literature review. Quaest. ent. 8: 560.Google Scholar
House, H. L. 1965. Digestion, Chapter 14. In Rockstein, M. (Ed.), Physiology of Insecta, Vol. II. Academic Press, New York. 905 pp. + xvi.Google Scholar
Kunitz, M. 1947. Crystalline soybean trypsin inhibitor. II. General properties. J. gen. Physiol. 30: 291310.CrossRefGoogle ScholarPubMed
Schwert, G. W. and Takenaka, Y.. 1955. A spectrophotometric determination of trypsin and chymotrypsin. Biochim. Biophys. Acta 16: 570575.CrossRefGoogle ScholarPubMed
Thawley, A. R. 1969. The components of honey and their effects on its properties. Bee World 50: 5160.CrossRefGoogle Scholar
Trembley, H. L. 1952. The distribution of certain liquids in the eosophageal diverticula and stomach of mosquitoes. Am. J. trop. Med. Hyg. 1: 693710.CrossRefGoogle Scholar
Waterhouse, D. F. 1957. Digestion in insects. A. Rev. Ent. 2: 118.CrossRefGoogle Scholar