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Memórias do Instituto Oswaldo Cruz

Print version ISSN 0074-0276On-line version ISSN 1678-8060

Mem. Inst. Oswaldo Cruz vol.89  suppl.2 Rio de Janeiro  1994 

Interactions between parasites and insects vectors

Hilary Hurd1 

Keele University, Department of Biological Sciences, Centre for Applied Entomology and Parasitology, Keele, UK


This review stresses the importance of studies that will provide a basic understanding of the pathology of parasite-infected vector insects. This knowledge should be a vital component of the very focussed initiatives currently being funded in the areas of vector control. Vector fecundity reduction is discussed as an example of such pathology. Underlying mechanisms are being investigated in a model system, Hymenolepis diminuta-infected Tenebrio molitor and in Onchocerca-infected blackflies and Plasmodium-infected Anopheles stephensi. In all cases, host vitellogenesis is disrupted by the parasite and, in the tapeworm/beetle model, interaction between the parasite and the endocrine control of the insect's reproductive physiology has been demonstrated.

Key words: vector, pathology; fecundity reduction; Hymenolepis diminuta; Onchocerca; Simulium; Plasmodium; Anopheles stephensi; insect vitellogenesis


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