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5 August 2023 Effects of heat wave on development, reproduction, and morph differentiation of Aphis glycines (Hemiptera: Aphididae)
Dailin Liu, Cirui Wu, Qi Wang, Donghao Liu, Zhenqi Tian, Jian Liu
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Abstract

As global warming intensifies, heat waves occur frequently in the summer and autumn in Heilongjiang Province, northeast China. The soybean aphid, Aphis glycines Matsumura, is an important pest of soybean in the region, which faces great survival pressure due to high temperature. In this study, A. glycines fed soybean (AgFS) and wild soybean (AgFW) were exposed to diurnal 35 °C for 7 days begin at different developmental stages, and the development, reproduction, and morph differentiation were studied. When AgFS were exposed to heat waves from the second stadium to the adult stage, they performed worse in adult lifespan and fecundity than the control. When AgFW were exposed to heat waves begin at different developmental stages, the adult lifespan and reproduction period were shortened and reproduction ability decreased. When exposed to heat waves, the adult fecundity and intrinsic rate of increase in AgFW were lower than those of AgFS. Lower proportion of males were deposited on day 13, when AgFS and AgFW were exposed to diurnal 35 °C begin at different developmental stages. The results showed that heat waves lasting for 7 days were likely to be useful in the management of A. glycines, which reduced adult reproduction ability and male differentiation proportion in the offspring and significantly affected AgFW compared to AgFS. These results are important for predicting the dynamics of A. glycines in Heilongjiang, northeast China, where the local environmental temperature is increasing and heat waves occur frequently.

Dailin Liu, Cirui Wu, Qi Wang, Donghao Liu, Zhenqi Tian, and Jian Liu "Effects of heat wave on development, reproduction, and morph differentiation of Aphis glycines (Hemiptera: Aphididae)," Environmental Entomology 52(5), 939-948, (5 August 2023). https://doi.org/10.1093/ee/nvad071
Received: 16 February 2023; Accepted: 14 July 2023; Published: 5 August 2023
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KEYWORDS
Aphis glycines
development
heat wave
morph differentiation
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