Population performance and detoxifying and protective enzyme activities of four thrips species feeding on flowers of Magnolia grandiflora (Ranunculales: Magnolia)
文献类型: 外文期刊
作者: Cao, Yu;Qi, Guiling;Jiang, Feiyu;Meng, Yonglu;Wang, Chun;Gu, Zhaoyang;Gao, Yulin;Reitz, Stuart R.;Li, Can
作者机构:
关键词: flower-dwelling thrips;Magnolia grandiflora;Thrips hawaiiensis;population dynamics;life history;host plant preference;physiological enzymes
期刊名称: PEST MANAGEMENT SCIENCE
ISSN: 1526-498X
年卷期: 2023 年
页码:
收录情况: SCIE(2023版)
摘要: BACKGROUNDDifferent thrips species can co-occur on the same flowers with different dominance degrees. To accurately evaluate the population performance on different thrips species on Magnolia grandiflora flowers, we investigated the diversity of thrips species and their population dynamics both in the field and laboratory. In addition, the activities of detoxifying and protective enzymes in thrips were also measured. RESULTSField investigations revealed that four thrips species (Thrips hawaiiensis, Thrips flavidulus, Frankliniella occidentalis, and Thrips coloratus) coexisted on M. grandiflora flowers. They were ranked, from highest population density to lowest, as follows: T. hawaiiensis > T. flavidulus > F. occidentalis > T. coloratus. In laboratory investigations, the species were ranked, from fastest developmental rates to slowest, as follows: F. occidentalis > T. hawaiiensis > T. flavidulus > T. coloratus; and from largest population size to smallest, as follows: T. hawaiiensis > F. occidentalis > T. flavidulus > T. coloratus. Biochemistry assays showed that the four species differed in their activities of detoxifying enzymes (carboxylesterase, glutathione-S-transferase, and cytochrome P450) and protective enzymes (superoxide dismutase, peroxidase) in both laboratory and field strains. CONCLUSIONDifferences in population performance among these four thrips on M. grandiflora may be related to their activity levels of physiological enzymes. The variations in thrips population performance between the field and the laboratory could be due to differences in environmental conditions. T. hawaiiensis showed a strong host preference for M. grandiflora, and thus it has the potential to be a dangerous pest in horticultural plants. (c) 2023 Society of Chemical Industry.
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