Mosquitoes: Small Insect, Big Impact
- Entomologist
- Apr 20
- 2 min read
Mosquitoes are often called the world’s deadliest animal, responsible for nearly 1 million deaths each year. With over 3,000 species worldwide, they thrive in tropical climates like Malaysia.
Despite common misconceptions, mosquitoes do not transmit COVID-19, but their rapid breeding and disease-carrying potential make them a serious concern.
Fast Breeding, Rapid Spread
Mosquitoes reproduce quickly. Their life cycle from egg to adult, takes only 8 to 10 days, allowing populations to grow rapidly.
A female lays ~100 eggs at a time, up to 500 in her lifetime
Only a small amount of stagnant water is needed
Aedes eggs can survive dry conditions up to 6 months
Common breeding sites: containers, drains, and water traps
In Malaysia, mosquito activity increases during the rainy season:
West Peninsular: May – October
East Coast, Sabah & Sarawak: October – February
Behaviour That Matters
Mosquitoes stay close to where they breed, typically within a 400-metre radius. They are most active during dusk and dawn, both indoors and outdoors.
Both males and females feed on nectar, but only females bite to produce eggs. Using a needle-like proboscis, they can consume up to three times their body weight in blood.
Why Mosquitoes Target You
Mosquitoes are highly sensitive to human signals:
Carbon dioxide (CO₂): More breathing = stronger attraction
Body heat: Higher temperature draws mosquitoes in
Dark colours: Especially black
Body odour: Compounds like lactic acid and ammonia
Blood type: Type O tends to attract more
Pregnancy: Higher CO₂ output and body heat
They can even learn and adapt, preferring certain hosts over time.
Final Takeaway
Mosquito control starts with eliminating breeding sites. With their ability to multiply quickly in minimal water, early prevention is key.
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