'Wolbachia method' is sometimes talked about with reference to which one of the following?

Correct Option

The 'Wolbachia method' refers to a biological control strategy aimed at reducing the transmission of mosquito-borne viral diseases. This method involves introducing Wolbachia bacteria into mosquito populations, particularly Aedes aegypti, which is a primary vector for diseases such as dengue, Zika, and chikungunya.

Wolbachia is a naturally occurring bacterium found in a wide range of insect species, but it is not naturally present in Aedes aegypti mosquitoes. When Aedes aegypti mosquitoes are infected with Wolbachia:

• The bacteria compete with viruses within the mosquito, thereby reducing the mosquito's ability to transmit these viruses to humans.
• Wolbachia is passed from infected female mosquitoes to their offspring, leading to the gradual spread of virus-resistant mosquito populations in the environment.

This approach effectively suppresses the transmission of target viral diseases over time.

Incorrect Options

Option (B): Converting crop residues into packing material is an initiative related to sustainable waste management and the development of eco-friendly packaging solutions. It does not involve the Wolbachia method.

Option (C): Producing biodegradable plastics typically involves microbial fermentation processes using various bacterial strains (e.g., Pseudomonas, Ralstonia) or plant-based materials. The Wolbachia method is not associated with this process.

Option (D): Producing biochar from the thermochemical conversion of biomass is a process primarily aimed at soil amendment, carbon sequestration, and waste management. It is unrelated to vector-borne disease control using Wolbachia bacteria.