Mosquito is a primary or definitive host where sexual cycle of plasmodium occurs. Human is a secondary or intermediate host where asexual cycle of plasmodium occurs. This note contains information about asexual cycle in man.
When a mosquito bites a malaria-infected person, it sucks gametocytes along with blood. Gametocytes then reach to the stomach of mosquito where they become mature and undergo many developmental phases for sexual cycle of plasmodium.