Mosquito: Public Health, Resistance, and Water Protection
What the exam tests
Mosquito control blends public health, IPM, and environmental protection. Questions cover larval vs. adult control, source reduction, resistance management, and protection of water and nontarget organisms.
Concepts to master
- IPM and source reduction. Eliminate standing water and manage breeding sites first; use larvicides for immature stages and adulticides when necessary. Surveillance (trapping, landing counts) guides decisions.
- Larval vs. adult control. Larvicides target concentrated immatures in water and are often more efficient; adulticides target flying adults, often during peak activity, and may be applied as ULV (ultra-low-volume) treatments.
- Resistance management. Rotate insecticide classes, avoid repeated use of a single mode of action, and monitor efficacy.
- Water and nontarget protection. Many products are toxic to aquatic organisms and pollinators; follow label restrictions, timing (e.g., avoid applications when bees are foraging), and buffers.
- Public health and notification. Coordinate with health authorities, follow label and community notification requirements, and protect applicators with appropriate PPE.
Traps
Questions tempt you to skip source reduction and jump to adulticide. Another trap: using a larvicide without checking water-use restrictions, or spraying adulticides during times that harm pollinators. Watch for confusion between larvicide and adulticide targets.
Rule of thumb
Control the water, control the mosquito. Worked example: A property has dozens of containers holding standing water. The most effective first step is source reduction-dump, drain, or cover containers-rather than an adulticide application, because eliminating breeding habitat reduces future adults at the source.