4.7 Article

Effects of Temperature on Blood Feeding and Activity Levels in the Tiger Mosquito, Aedes albopictus

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INSECTS
卷 14, 期 9, 页码 -

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MDPI
DOI: 10.3390/insects14090752

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Aedes albopictus; behavior; blood feeding; thermoregulation; tiger mosquito; temperature

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Temperature has profound effects on the blood feeding and activity patterns of the globally invasive mosquito species Aedes albopictus, with higher temperatures resulting in increased activity but decreased blood feeding.
Temperature has been shown to have profound effects on mosquito population dynamics and life history. Understanding these effects can provide insight into how mosquito populations and the diseases they transmit may vary across space and time and under the changes imposed by climate change. In this study, we evaluated how temperature affects the blood feeding and general activity patterns in the globally invasive mosquito species Aedes albopictus. We reared cohorts of Ae. albopictus from hatch through adulthood across three temperatures (26?, 29 ?, and 32 ?). The propensity of adult females to take a blood meal and the size of the blood meal were compared across temperatures. We also observed the overall activity levels of adult females over a 13.5 h period. At the highest temperature tested (32 ?), females were less likely to take a blood meal and were most active, as measured through frequency of movement. We postulate that our highest-temperature treatment imposes heat stress on adult female Ae. albopictus, where many abstain from blood feeding and increase movement in an attempt to escape the heat stress and find a more favorable resting location.

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