Which cues do female mosquitoes use to locate a host for a blood meal?

Which cues do female mosquitoes use to locate a host for a blood meal?

• A. Scent, sight, and heat
• B. Sound and vibration
• C. Light only
• D. Color and texture

Answer: (A)

Female mosquitoes locate a host primarily through a combination of chemical signals, warmth, and visual cues. They detect carbon dioxide and other human odors carried in the air, which guide them from a distance toward the source. As they approach, body heat and moisture help them zero in on the exact location on the skin where a blood meal is possible. Visual information plays a role at closer range too, with mosquitoes using movement, contrast, and the silhouette of a potential host to decide whether to land. This is why scent, sight, and heat together form the best description of host-seeking cues. Sound and vibration aren’t the main drivers for finding a host, light alone isn’t how they locate a person, and color and texture aren’t primary cues for the initial approach.

Female mosquitoes locate a host primarily through a combination of chemical signals, warmth, and visual cues. They detect carbon dioxide and other human odors carried in the air, which guide them from a distance toward the source. As they approach, body heat and moisture help them zero in on the exact location on the skin where a blood meal is possible. Visual information plays a role at closer range too, with mosquitoes using movement, contrast, and the silhouette of a potential host to decide whether to land.

This is why scent, sight, and heat together form the best description of host-seeking cues. Sound and vibration aren’t the main drivers for finding a host, light alone isn’t how they locate a person, and color and texture aren’t primary cues for the initial approach.