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ABSTRACT
High numbers of Harmonia axyridis adults were observed even when aphid populations were low or absent in kenaf (Hibiscus cannabinus) fields. Compared to a control group given access to water alone or cotton aphids and water, longevity of H. axyridis adults provided with kenaf leaves containing extrafloral nectar significantly increased.
Disclosure statement
No potential conflict of interest was reported by the authors.
Additional information
Funding
This research was supported by the National Natural Science Foundation of China (No. 31621064).