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Elevated CO2 affects interspecific competition between the invasive thrips Frankliniella occidentalis and native thrips species

文献类型： 外文期刊

作者： Zhang, Ting 1 ; Wang, Chun 1 ; Jiang, Feiyu 1 ; Li, Min 1 ; Chen, Ling 1 ; Xie, Hua 1 ; Wang, Lijuan 1 ; Gao, Yulin 2 ; Reitz, Stuart R. 3 ; Cao, Yu 1 ;

作者机构： 1.Guiyang Univ, Dept Biol & Engn Environm,Guizhou Educ Dept, Guizhou Prov Key Lab Rare Anim & Econ Insect Mt Re, Key Lab Surveillance & Management Invas Alien Spec, Guiyang, Peoples R China

2.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing, Peoples R China

3.Oregon State Univ, Dept Crop & Soil Sci, Malheur Expt Stn, Ontario, OR 97914 USA

关键词： Western flower thrips; Native thrips species; Capsicum annuum; CO2 elevation; Interspecific competition; Invasion ecology

期刊名称：JOURNAL OF PEST SCIENCE （ 影响因子：4.8； 五年影响因子：5.0 ）

ISSN： 1612-4758

年卷期： 2024 年

页码：

收录情况： SCI

摘要： We explored the effects of elevated CO2 on the population performance and interspecific interactions of three thrips pests. The dominance of the three thrips in the field was Frankliniella occidentalis approximate to Frankliniella intonsa > Thrips hawaiiensis. The performance of these thrips, alone and in combination, was evaluated in the laboratory under elevated CO2 (800 mu l L-1) and ambient CO2. Compared with ambient CO2, elevated CO2 significantly accelerated the developmental rates and decreased the survival rates of all thrips species. Significant differences in fecundity, intrinsic rate of increase (r(m)), and net reproductive rate (R-0) were observed among these thrips, and their values were significantly increased in F. occidentalis but decreased in F. intonsa and T. hawaiiensis under elevated CO2, compared that in the ambient CO2 treatments. In treatments where thrips species coexisted, F. occidentalis and F. intonsa accounted for similar proportions of the population, and both were dominant over T. hawaiiensis within 10 generations under ambient CO2. Under elevated CO2, F. occidentalis was the dominant species and completely displaced F. intonsa and T. hawaiiensis by the ninth or eighth generation. Where the three species coexisted, no displacement occurred within 10 generations, but the pattern of dominance shifted to F. occidentalis > F. intonsa > T. hawaiiensis. Our results show that the population development of F. occidentalis benefits from elevated CO(2 )and that it can become the dominant species in interspecific interactions with native thrips species. Thus, compared with native thrips species, F. occidentalis has greater adaptability and competitive capacity under elevated CO2, and it may become a more dangerous crop pest under environmental change in the future.

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