Biology 546
Human parasitology laboratory tutorial

The photomicrograph on the left represents two house flies in love. Which of the following may be carried phoretically by these flies (Hint: Members of the Muscidae and Fanniidae are known mechanical vectors for over 100 different diseases, including viruses, bacteria, protozoa, and helminths)?

Cryptosporidium parvum
Giardia duodenalis
Sarcocystis spp.
Toxoplasma gondii

Original; photograph by S.J. Upton

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Kansas State University | Biology Division