Dou Shuying, Liu Bing, Liu Yangtian, Zhang Jianping, Lu Yanhui
Xinjiang Production and Construction Corps Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization/Key Laboratory at Universities of Xinjiang Uygur Autonomous Region for Oasis Agricultural Pest Management and Plant Protection Resources Utilization, College of Agriculture, Shihezi University, Shihezi 832003, China.
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Insects. 2023 Jan 13;14(1):81. doi: 10.3390/insects14010081.
Intraguild predation among arthropod predators in agricultural ecosystems may have a negative impact on biological control. At present, there are few direct reports on trophic relationships among participants of predation in field groups. In this study, we measured the feeding choices of (Goeze) towards mummies with different densities of Glover. The dynamics of the occurrence of mummies in the cotton field were investigated over 2017-2019. Singleplex PCR and multiplex PCR were used to detect the predation of 2090 individuals on aphids and mummies in Xinjiang cotton field, which revealed the intraguild predation frequency between and various parasitoids. There was no obvious feeding preference of towards live aphids or mummies, which mainly depended on the relative density of prey. Among the four species of aphids detected in , had a high detection rate and was the main prey source of the ladybeetle in the cotton filed. Mostly, ladybeetles consumed parasitoids through mummies, with 6.39% directly feeding on adult parasitoids. had strong trophic links to both parasitoids and aphids. We established a food web of aphids-primary parasitoids-hyperparasitoids-, which can be used to evaluate the pest control ability of from a new perspective.
农业生态系统中节肢动物捕食者之间的集团内捕食可能会对生物防治产生负面影响。目前，关于田间捕食者之间营养关系的直接报道较少。在本研究中，我们测定了（戈泽）对不同密度格洛弗木乃伊的取食选择。调查了2017 - 2019年棉田木乃伊的发生动态。采用单重PCR和多重PCR检测了新疆棉田2090只个体对蚜虫和木乃伊的捕食情况，揭示了与各种寄生蜂之间的集团内捕食频率。对活蚜虫或木乃伊没有明显的取食偏好，这主要取决于猎物的相对密度。在所检测的四种蚜虫中，检测率较高，是棉田瓢虫的主要猎物来源。大多数情况下，瓢虫通过木乃伊取食寄生蜂，6.39%直接取食成年寄生蜂。与寄生蜂和蚜虫都有很强的营养联系。我们建立了蚜虫-初级寄生蜂-重寄生蜂-的食物网，可从新的角度评估的害虫控制能力。
