Name an emerging technology or method in mosquito or tick control and describe its benefit and limitation.

• A. CRISPR-based population suppression with broad ecological success.
• B. Wolbachia-based mosquito population suppression; benefits include reduced disease transmission potential and sometimes self-limiting spread; limitations include regulatory, ecological concerns, and public acceptance.
• C. Traditional pesticide spraying with no new technology.
• D. Only mosquito traps without any biological manipulation.

Answer: (B)

Emerging biological control using Wolbachia bacteria in mosquitoes combines two effects: reducing how well mosquitoes can transmit pathogens and, in some release strategies, suppressing the population itself. Wolbachia are inherited from mothers to offspring, and certain approaches release infected males (or both sexes) so that matings with uninfected females produce inviable eggs, lowering the number of mosquitoes over time. At the same time, some Wolbachia strains hinder a virus’s ability to replicate inside the mosquito, meaning that even when the population persists, the risk of disease transmission to people drops. This makes it a promising tool because it targets disease transmission with fewer chemical interventions and can be self-sustaining in some settings, though in other contexts its spread may be limited by fitness costs or ecological factors.

However, moving this approach into widespread use requires navigating regulatory approvals, potential ecological concerns about releasing symbiont-infected insects, and public acceptance of releasing modified organisms, all of which can affect how and where it can be deployed.

Other options aren’t as fitting because one involves a newer genetic-drive style strategy that, while promising, carries substantial regulatory and ecological uncertainties and hasn’t demonstrated broad real-world ecological success yet; traditional pesticide spraying is an established method rather than an emerging technology; and relying only on traps without any biological manipulation doesn’t address emerging biocontrol approaches.