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the claim

Dengue mosquitoes prefer to bite at night.

the verdict
REFUTED
the evidence says no
Recorded sources
0 sources for · 2 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Dengue mosquitoes prefer to bite at night?

No. Dengue-transmitting mosquitoes, such as Aedes aegypti, are primarily diurnal, exhibiting peak biting and host-seeking activity during the day, particularly around dawn and dusk, rather than preferring to bite at night.

Verdict: REFUTED · 0 sources for, 2 against · Last checked

The analysis

The claim states that dengue mosquitoes (primarily Aedes aegypti) prefer to bite at night. Scientific literature consistently describes Aedes aegypti as diurnal, with peak activity occurring during daylight hours, specifically around dawn and dusk. Papers 2 and 7 explicitly note these daytime and twilight peaks rather than nocturnal preferences. Therefore, the claim is refuted.

Evidence against · 2
Time-of-day modulation in mosquito response persistence to carbon dioxide is controlled by Pigment-Dispersing Factor.
2025
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L, D., R, H., JM, B., C, G., & LB, D. (2025). Time-of-day modulation in mosquito response persistence to carbon dioxide is controlled by Pigment-Dispersing Factor.. doi.org. https://doi.org/10.1073/pnas.2520826122

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More against · 1
High-resolution characterisation of diel activity rhythms in <i>Aedes aegypti</i> and <i>Culex quinquefasciatus</i>.
2026
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D, S., M, C., RV, B., & R, M. (2026). High-resolution characterisation of diel activity rhythms in <i>Aedes aegypti</i> and <i>Culex quinquefasciatus</i>.. doi.org. https://doi.org/10.1016/j.crpvbd.2026.100384

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