Question

Why does Plasmodium sp. does not causes disease to mosquitoes ????

Answer 1

Malaria

Answer 2

That's because the the disease causing merozoites are formed in the non-sexual reproduction stage of plasmodium life cycle which takes place in Human Beings.

Answer 3

Plasmodium usually causes malaria in humans.
Mosquitoes are the ones who usually carry Plasmodium.
And sometimes, the mosquitoes get sick from it too. But they're rare.

Plasmodium doesn't usually cause disease in mosquitoes. Why not?

It's because the mosquitoes have an immune system that fights the Plasmodium parasite.
One special type of white blood cell, called "granulocytes," does most of the work to help mosquitoes fight off the Plasmodium infection.

Answer 4

Malaria is transmitted among humans by female mosquitoes of the genus Anopheles. Female mosquitoes take blood meals to carry out egg production, and such blood meals are the link between the human and the mosquito hosts in the parasite life cycle. The successful development of the malaria parasite in the mosquito (from the "gametocyte" stage to the "sporozoite" stage) depends on several factors. The most important is ambient temperature and humidity (higher temperatures accelerate the parasite growth in the mosquito) and whether the Anopheles survives long enough to allow the parasite to complete its cycle in the mosquito host ("sporogonic" or "extrinsic" cycle, duration 10 to 18 days). Differently from the human host, `the mosquito host does not suffer noticeably from the presence of the parasites because the disease causing stage is merozoite stage which develops ahead in the secondary host (humans)`

Answer 5

Thanks for copying & pasting that article. I already read it.

I read this one too:
http://news.sciencemag.org/health/2010/09/how-mosquitoes-fight-malaria

It does mention that bacteria might also be reason for why mosquitoes are resistant to malaria. Maybe it's because they trigger the development of granulocytes in the mosquitoes.

But this article here talks about another reason for why certain types of bacteria might help:
http://www.nih.gov/researchmatters/may2013/05202013malaria.htm

Answer 6

If you will note the last lines which i highlighted then u'll come to know that it isn't exactly copy and pasted. The reason i stated above is most widely accepted fact. Hope it helps. Thanx for cooperation.

Answer 7

It doesn't suffer noticeably. But in rare cases, they can get sick from the parasite.

We're trying to talk about the reasons for why they DON'T generally get sick from the parasite.

If we accept that mosquitoes can sometimes get sick from Plasmodium, then we need to answer for why they usually don't.

If you're trying to say that mosquitoes NEVER get sick from Plasmodium, then the explanation is different.

Answer 8

Well, if you know that as time passes each and every organism gets evolved and incorporates many changes within it. The reason why plasmodium causes malaria lies within the toxin called hemozoin which is released when merozoite stage of malarial plasmodium is formed. This stage is asexual stage of the plasmodium life cycle. Sexual life cycle of plasmodium takes place in the mosquito (sporozoite) and it is generally non-infectious.

The fact that mosquitos do get sick is correct but `mosquitos does not develop malaria !`

Answer 9

Also it's not very obvious that if mosquitoes do get sick or not ?
It's a matter of ongoing debate. But it's widely proved and accepted that mosquitoes does not acquire malaria.

Answer 10

I agree with you there -- mosquitoes don't get sick the same way that we do, with the fever and all that. Because their immune and body systems are different from ours.

I suppose that I still need to know how Plasmodium negatively affects mosquitoes.

Thank you for the medal.