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22 May 2019 Reduction of Plant Suitability for Corn Leaf Aphid (Hemiptera: Aphididae) Under Elevated Carbon Dioxide Condition
Yu Chen, Laurent Serteyn, Zhenying Wang, KangLai He, Frederic Francis
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Abstract

In the current context of global climate change, atmospheric carbon dioxide (CO2) concentrations are continuously rising with potential influence on plant–herbivore interactions.The effect of elevated CO2 (eCO2) on feeding behavior of corn leaf aphid, Rhopalosiphum maidis (Fitch) on barley seedlings Hordeum vulgare L. was tracked using electrical penetration graph (EPG). The nutrient content of host plant and the developmental indexes of aphids under eCO2 and ambient CO2 (aCO2) conditions were also investigated. Barley seedlings under eCO2 concentration had lower contents of crude protein and amino acids. EPG analysis showed the plants cultivated under eCO2 influenced the aphid feeding behavior, by prolonging the total pre-probation time of the aphids (wandering and locating the feeding site) and the ingestion of passive phloem sap. Moreover, fresh body weight, fecundity and intrinsic population growth rate of R. maidis was significantly decreased in eCO2 in contrast to aCO2 condition. Our findings suggested that changes in plant nutrition caused by eCO2, mediated via the herbivore host could affect insect feeding behavior and population dynamics.

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Yu Chen, Laurent Serteyn, Zhenying Wang, KangLai He, and Frederic Francis "Reduction of Plant Suitability for Corn Leaf Aphid (Hemiptera: Aphididae) Under Elevated Carbon Dioxide Condition," Environmental Entomology 48(4), 935-944, (22 May 2019). https://doi.org/10.1093/ee/nvz045
Received: 7 February 2019; Accepted: 3 April 2019; Published: 22 May 2019
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KEYWORDS
carbon dioxide
climate change
corn leaf aphid
electrical penetration graph (EPG)
feeding behavior
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