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Plasmodium yoelii nigeriensis: the effect of high and low intensity of infection upon the egg production and bloodmeal size of Anopheles stephensi during three gonotrophic cycles

Published online by Cambridge University Press:  06 April 2009

J. C. Hogg  and
H. Hurd
J. C. Hogg
Affiliation:
Centre for Applied Entomology and Parasitology, Department of Biological Sciences, Keele University, Keele, Staffs ST5 5BG
H. Hurd
Affiliation:
Centre for Applied Entomology and Parasitology, Department of Biological Sciences, Keele University, Keele, Staffs ST5 5BG
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Summary

Anopheles stephensi mosquitoes showed a reduction in fecundity over 3 successive gonotrophic cycles, after becoming infected with Plasmodium yoelii nigeriensis. This effect could be observed at high oocyst burdens (> 75) or at low oocyst burdens (mean of 4·36). Mean bloodmeal size of the infected mosquitoes was significantly reduced only when feeding upon a mouse with a high gametocytaemia and the conversion of the bloodmeal into eggs by the infected mosquitoes was disrupted. Patterns of infected mosquito mortality, over the 3 gonotrophic cycles, varied with severity of infection. Although in 1 case increased mortality and decreased bloodmeal size may have affected fecundity, this could not have accounted for all of the observed fecundity reduction. We propose that other, unknown parasite related factors, are involved.

Keywords

Anopheles stephensiPlasmodium yoelii nigeriensismalariamosquito fecundityhaematin excretionmosquito mortality
Type
Research Article
Information
Parasitology , Volume 111 , Issue 5 , December 1995 , pp. 555 - 562
Copyright
Copyright © Cambridge University Press 1995

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