Lecture 19 evo and human health II

Lecture 19 evo and human health II - Evolution in the News...

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Evolution in the News
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Which taxonomic group is not involved in malaria as host, pathogen, or vector? A) protists B) mammals C) insects D) bacteria
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Evolution of sickle cell malaria LINK Are humans subject to natural selection?
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The causative agent of malaria is Plasmodium carried from host to host by a species of mosquito. When the carrier mosquito bites a human, the sporozoite stage of the parasite is inadvertently delivered to the blood of the host, carried in turn to the liver, and then eventually to the red blood cells. When another mosquito drinks of the host’s blood, it picks up and carries away the reproductive stages of the parasites.
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Malaria is a parasitic infection of the blood Malaria is caused by a parasite called Plasmodium, which is transmitted via the bites of infected mosquitoes. In the human body, the parasites multiply in the liver, and then infect red blood cells.
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People with malaria usually suffer from fever, headache, aches and pains, and vomiting. They may sometimes experience convulsions, coma, kidney failure, and severe anemia.
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Humans infected with malaria experience flu-like symptoms that can result in coma and death. Malaria, from the Medieval Italian words mala aria or “bad air,” infects more than 500 million people a year and kills more than a million— one person dies about every 30
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This note was uploaded on 03/19/2008 for the course BIOL 101 taught by Professor Annestork during the Fall '08 term at Ithaca College.

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Lecture 19 evo and human health II - Evolution in the News...

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