why is malaria transmitted by females?

weissm at rockvax.rockefeller.edu weissm at rockvax.rockefeller.edu
Fri Jan 13 21:30:34 EST 1995


In article <roo-090195161824 at port38.annex3.net.ubc.ca>, roo at unixg.ubc.ca
(Ru Tan) wrote:

> Does anyone know why female (but not male) anopheline mosquitos are
> implicated in malaria transmission? Do females bite more readily and if so,
> why? or is the female gut more suited for plasmodia sexual reproduction.
> Just curious.
> 
> -- 
> Ru Tan    ||   roo at unixg.ubc.ca
> ________________________________

Not only does the female take blood meals rather than nectar as the male
mosquito does but the malarial parasite contained in infeected blood that
she injests completes its life cycle in the mosquito midgut and salivary
gland.  SO when it takes its next blood meal infective parasites,
sporozoites, are infected into the blood to infect the liver and then the
red blood cells.  The life cycle of the parasite occurs in mosquitos and
another host, mammals, birds, amphibians and reptiles.

Cheers,


Martin



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