Niches and interspecific competitive relationships of the parasitoids, Microplitis prodeniae and Campoletis chlorideae, of the Oriental leafworm moth, Spodoptera litura, in tobacco
文献类型: 外文期刊
第一作者: Zhou, Zhong-Shi
作者: Zhou, Zhong-Shi;Xu, Zai-Fu;Zhou, Zhong-Shi;Chen, Ze-Peng
作者机构:
关键词: Nicotiana tabacum;Helicoverpa assulta;Helicoverpa armigera;biological control;niche
期刊名称:JOURNAL OF INSECT SCIENCE ( 影响因子:1.857; 五年影响因子:1.904 )
ISSN: 1536-2442
年卷期: 2010 年 10 卷
页码:
收录情况: SCI
摘要: Both Microplitis prodeniae Rao and Chandry (Hymenoptera: Bracondidae) and Campoletis chlorideae Uchida (Hymenoptera: Ichnumonidae) are major parasitoids of Spodoptera litura (Fabricious) (Lepidoptera: Noctuidae) in tobacco, Nicotiana tabacum L. (Solanales: Solanaceae) at Nanxiong, Guangdong Province, South China. The niches and interspecific competition relationships of the two species were studied. The results show that the competition between the two species for spatial and food resources was very intense, and C. chlorideae was always dominant when the two species compete for spatial and food resources in different periods. Thus C. chlorideae may drive M. prodeniae away when they occupy the same spatial or food resource. The adaptability of C. chlorideae to the environment in the tobacco fields may be greater than that of M. prodeniae, so C. chlorideae can maintain a higher population compared to that of M. prodeniae.
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