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Re-infection of the mosquito: Difference between revisions

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File:Liver 0.jpg|<span style="font-size:90%">''Infection of the mosquito''</span>|link={{filepath:Liver 0.jpg}}
File:Mosquito uptake.jpg|<span style="font-size:90%">''Infection of the mosquito''</span>|link={{filepath:Mosquito uptake.jpg}}
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The initial mosquito bite (Image A): blood from the host is taken through as mosquito mouthparts (m) from small vessels (v). At the same time fluid from mosquito salivary glands passes into the vessel. If a mosquitos is host to the malaria organism then parasites enter the blood with this saliva (in the form of '''"sporozoites"''' (sp)).   
When a mosquito feeds from a malaria infected hosts, the blood meal will contain parasites of all formas, but importantly including male and female gametocytes. The pH and temperature changes with the mosquito stomach cause the gametocytes to gain full sexual maturity (gemtogenesis). The male undergoes 3 cycles of division to generate 8 male sexual forms (gametes). These then 8 gamaetes then "break out" of the male gametocytes (the microgametocyte) in a process known as exflagellation and fuse with the female gamete to move to the next stage of development with the mosquito gut wall, before finally entering the salivary glands of the mosquito where a new infection can be initiated.   


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[[Storage changes in malaria]]
[[Storage changes in malaria]]

Revision as of 13:04, 29 April 2024

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Re-infection
  • Infection of the mosquito

    Infection of the mosquito

When a mosquito feeds from a malaria infected hosts, the blood meal will contain parasites of all formas, but importantly including male and female gametocytes. The pH and temperature changes with the mosquito stomach cause the gametocytes to gain full sexual maturity (gemtogenesis). The male undergoes 3 cycles of division to generate 8 male sexual forms (gametes). These then 8 gamaetes then "break out" of the male gametocytes (the microgametocyte) in a process known as exflagellation and fuse with the female gamete to move to the next stage of development with the mosquito gut wall, before finally entering the salivary glands of the mosquito where a new infection can be initiated.

Storage changes in malaria

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