首页|Rainfall during the night can trigger non-migratory take-off behavior of the white-backed planthopper,Sogatella furcifera
Rainfall during the night can trigger non-migratory take-off behavior of the white-backed planthopper,Sogatella furcifera
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Take-off behavior is crucial to the overall success of insect migration.Al-though most high-altitude migratory flights commence with mass take-offs around dusk and dawn,little is known about nighttime take-off behavior.The take-off behavior of mi-gratory Sogatella furcifera was investigated in field cages from 2017 to 2019.The species showed a bimodal take-off pattern at dusk and dawn on rainless nights,with mass flight at dusk more intense than dawn flight.However,a higher frequency of take-offs during the nighttime was observed on rainy nights,resulting in the absence of dawn take-offs.Most migratory take-off individuals at dusk and dawn landed on the cage top or the walls above 150 cm,while non-migratory individuals that took off during the nighttime due to rainfall mainly landed on the cage walls below 150 cm.Furthermore,it has been observed that migratory take-off individuals possess stronger sustained flight capabilities and exhibit more immature ovaries compared with non-migratory take-offs.These findings advance our understanding of the take-off behavior of S.furcifera and thus provide a basis for the accurate prediction and management of the migratory dynamics of this pest.
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