Class Notes (810,488)
Canada (494,139)
Biology (450)
BIOL 200 (63)
Mary Silas (53)

Life Cycle

2 Pages
Unlock Document

Concordia University
BIOL 200
Mary Silas

Lifecycle  Infection of Human o Infected female mosquitoes are feeding human blood o Secretes salvia which contains anticoagulants (anti blood-clotting agents) o Sporozoites (young malarial parasites) in the salvia enter blood  Latent Period o Parasites migrate to liver cells / undergo asexual reproduction / develop into merozoites o Merozoites infect red blood cells / undergo asexual reproduction / produce more merozoites  Outbreak o Merozoites burst out of red blood cells to infect more cells o This outburst is associated with bouts of fever o Some merozoites develop into gametocytes  Infection of Female Mosquitos o Gametocytes are taken up by female mosquitos that feed on the infected person's blood o Inside the female mosquito, gametes produced by those gametocytes fuse (sexual reproduction phase) o Results in zygotes which develop into sporozoites o Sporozoites move into the salivary glands of the female mosquito where they can be injected into another person  Cycle starts again Schistosoma (endoparasite)  Name of a genus of parasitic flatworms; causes the disease Bilharzia in humans  Two hosts for lifecycle: fresh water snails (vector) and humans  Penetrate the skin via enzymes damaging the host cell membrane  Invades blood vessels, veins of the bladder region, abdomen and pelvis
More Less

Related notes for BIOL 200

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.