Interactive Effects of Elevated CO(2) and Cotton Cultivar on Tri-Trophic Interaction of Gossypium hirsutum, Aphis gossyppii, and Propylaea japonica.

Interactive Effects of Elevated CO(2) and Cotton Cultivar on Tri-Trophic Interaction of Gossypium hirsutum, Aphis gossyppii, and Propylaea japonica. Research Abstract Details 

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Interactive Effects of Elevated CO(2) and Cotton Cultivar on Tri-Trophic Interaction of Gossypium hirsutum, Aphis gossyppii, and Propylaea japonica. Abstract Text:

Feng Gao,San-Rong Zhu,Yu-Cheng Sun,Li Du,Meghan Parajulee,Le Kang,Feng Ge,

Information on the effects of enriched CO(2) on both the chemical composition of plants and the consequences of such changes for performance of a herbivore and its predator is an important first step in understanding the responses of plants and insects to global environmental change. We examined interactions across three trophic levels, cotton, Gossypium hirsutum, an aphid herbivore, Aphis gossypii Glover, and a coccinellid predator, Propylaea japonica (Thunberg), as affected by elevated CO(2) concentrations and crop cultivars. Plant carbon:nitrogen (C:N) ratios, condensed tannin, and gossypol content were significantly higher, and nitrogen content was significantly lower in plants exposed to elevated CO(2) levels compared with that in plants exposed to ambient CO(2.) Cotton aphid survivorship significantly increased and free fatty acid content decreased with increased CO(2) concentrations. No significant differences in survival and lifetime fecundity of P. japonica were observed between cultivars and CO(2) concentration treatments. However, stage-specific larval durations of the lady beetle were significantly longer when fed aphids from elevated CO(2) concentrations. Our results indicate that high gossypol in the cotton host plant had an antibiotic effect on A. gossypii and produced a positive effect on growth and development of P. japonica at the third trophic level. However, elevated CO(2) concentrations showed a negative effect on P. japonica. We speculate that A. gossypii may become a more serious pest under an environment with elevated CO(2) concentrations because of increased survivorship of aphid and longer development time of lady beetle.

Interactive Effects of Elevated CO(2) and Cotton Cultivar on Tri-Trophic Interaction of Gossypium hirsutum, Aphis gossyppii, and Propylaea japonica. Publishing Authors By Initials

F Gao,SR Zhu,YC Sun,L Du,M Parajulee,L Kang,F Ge,

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Interactive Effects of Elevated CO(2) and Cotton Cultivar on Tri-Trophic Interaction of Gossypium hirsutum, Aphis gossyppii, and Propylaea japonica. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Environmental entomology

VOLUME: 37

Page Numbers: 29-37

Journal Abbreviation: Environ. Entomol.

ISSN: 0046-225X

DAY: 19

MONTH: Feb

YEAR: 2008

Interactive Effects of Elevated CO(2) and Cotton Cultivar on Tri-Trophic Interaction of Gossypium hirsutum, Aphis gossyppii, and Propylaea japonica. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Interactive Effects of Elevated CO(2) and Cotton Cultivar on Tri-Trophic Interaction of Gossypium hirsutum, Aphis gossyppii, and Propylaea japonica.

AFFILIATION: State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Graduate University of Chinese Academy of Sciences, Beijing, 100049, China.

Country: United States

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MEDLINETA: Environ Entomol

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