Effect of High Temperature and Natural Enemies on the Interspecies Competition Between Two Wheat Aphid Species, Rhopalosiphum padi and Sitobion miscanthi
文献类型： 外文期刊
作者： Miao, Jin 1 ; Guo, Pei 2 ; Zhang, Yunhui 3 ; Tan, Xiaoling 3 ; Chen, Julian 3 ; Li, Yaofa 2 ; Wu, Yuqing 1 ;
作者机构： 1.Henan Acad Agr Sci, Inst Plant Protect, Zhengzhou 450002, Peoples R China
2.Hebei Acad Agr & Forestry Sci, Inst Plant Protect, Baoding 071000, Peoples R China
3.Chinese Acad Agr Sci, Inst Plant Protect, Beijing 100193, Peoples R China
关键词： wheat aphid; interspecies competition; high temperature; natural enemy
期刊名称：JOURNAL OF ECONOMIC ENTOMOLOGY （ 影响因子：2.447； 五年影响因子：2.483 ）
ISSN： 0022-0493
年卷期： 2022 年 115 卷 2 期
页码：
收录情况： SCI
摘要： Interspecies competition affects the distribution, quantity, and community structure of insects, especially among closely-related (congeners) species. Some ecological factors differentially affect the fitness of co-existing species, thus conferring an advantage on one competitor, and then the structure of communities. The present work evaluated the effects of high temperature and natural enemies on the interspecific competition between the grain aphid Sitobion miscanthi (Takahashi) (Aphididae: Hemiptera) and bird cherry-oat aphid Rhopalosiphum padi (L.) (Hemiptera: Aphididae), two key pests of wheat in China. Results showed that the population growth of R. padi was faster at 30 degrees C, and the intrinsic rate of natural increase (r(m)) value was 5 times that of S. miscanthi, indicating that R. padi was more high-temperature resistant and has advantages in interspecific competition at high temperature. Moreover, compared to S. miscanthi, the population of R. padi was less affected by their predator, larvae of the multicolored Asian lady beetle, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae), and aphid parasitoids, Aphidius avenae (Haliday) or Aphidius gifuensis (Ashmead) (Hymenoptera: Aphidiidae), which made them gain an advantage in the interspecific competition. Our results enrich the knowledge of phytophagous insect interspecific completion and implicate the ecological mechanism of R. padi may become the dominant species in wheat fields in China.
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