Time required for development of parasite from the gametocyte to sporozite stage in mosquito is called as –
**Core Concept**
The development of a parasite from the gametocyte to sporozoite stage in a mosquito vector involves a complex series of cellular transformations. This process is crucial for the transmission of diseases such as malaria, yellow fever, and dengue fever.
**Why the Correct Answer is Right**
The correct answer refers to the extrinsic incubation period, which is the time required for the parasite to develop from the gametocyte stage in the mosquito to the sporozoite stage, which is infectious to humans. This process typically occurs within the mosquito's midgut, where the gametocytes are ingested along with a blood meal. The sporozoites then migrate to the salivary glands, where they are ready to be transmitted to a new host through a mosquito bite. The length of the extrinsic incubation period varies depending on factors such as temperature, humidity, and the specific parasite species.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the development of parasites in mosquitoes.
**Option B:** This option refers to a different stage in the parasite's life cycle, specifically the development of oocysts in the mosquito's midgut.
**Option C:** This option is not a valid term in the context of parasite development in mosquitoes.
**Clinical Pearl / High-Yield Fact**
It's essential to note that the extrinsic incubation period can vary significantly depending on environmental factors, which is why the transmission of diseases by mosquitoes can be influenced by climate and weather conditions.
**Correct Answer: B. Extrinsic incubation period.