Li Mengni, Peng Zhengke, Guo Chaosong, Xiao Yong, Yin Fei, Yuan Haibin, Li Zhenyu, Zalucki Myron P
Department of Plant Protection, Jilin Agricultural University, Changchun 130118, China.
Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, China.
Insects. 2024 Dec 18;15(12):1003. doi: 10.3390/insects15121003.
As two major pests of cowpea in South China, bean flower thrips [ (Bagnall)] and flower thrips [ (Trybom)] always occur on the same plant. In this study, the two-sex life table parameters of these two species were investigated on three bean pods: cowpea ( L. var. Chunqiu Wujiadou), snap bean ( L. var. Yonglong 3), and green bean ( L. var. Linghangzhe) using standard cut bean protocols. Longevity of female adult showed no significant difference on cowpea and snap bean, but was shortest on green bean, with the highest fecundity on snap bean, followed by cowpea and green bean. Longevity and fecundity of female adult were both highest on cowpea, followed by snap bean and green bean. On snap bean, the population parameters (, , ) of were higher than , whereas and were not different, suggesting that were more competitive on snap bean. On cowpea, the population parameters (, , , ) of were higher than . , suggesting a competitive advantage of on cowpea. To better mimic field conditions, we investigated the survival and fecundity of adult under two distinct scenarios: when they could feed directly on cut surfaces of cowpeas (standard lab protocol), and when they could not. Adult survival of is not significantly influenced by whether or not they fed directly on cut surfaces of cowpeas. However, a notable decrease in fecundity was observed in that fed on surface-covered cut pods. This suggested that direct feeding on cut surfaces of cowpea did have an impact on thrips' fecundity, offering fresh perspectives for future research into the growth and development of thrips in a laboratory. Our study suggests that experiments involving cut surfaces may be misleading, and further investigations are ongoing to address these concerns.
作为中国南方豇豆的两种主要害虫，豆花蓟马[（巴格纳尔）]和花蓟马[（特里博姆）]总是出现在同一植株上。在本研究中，使用标准的切段豆荚实验方案，在三种豆荚上研究了这两个物种的两性生命表参数：豇豆（L. var. 春秋吴家豆）、荷兰豆（L. var. 永隆3号）和绿豆（L. var. 凌航者）。雌性成虫的寿命在豇豆和荷兰豆上没有显著差异，但在绿豆上最短，在荷兰豆上的繁殖力最高，其次是豇豆和绿豆。雌性成虫的寿命和繁殖力在豇豆上都最高，其次是荷兰豆和绿豆。在荷兰豆上，豆花蓟马的种群参数（r、R0、λ）高于花蓟马，而T和rm没有差异，这表明豆花蓟马在荷兰豆上更具竞争力。在豇豆上，花蓟马的种群参数（r、R0、T、λ）高于豆花蓟马，这表明花蓟马在豇豆上具有竞争优势。为了更好地模拟田间条件，我们研究了花蓟马成虫在两种不同情况下的存活和繁殖力：当它们可以直接取食豇豆的切段表面时（标准实验室方案），以及当它们不能取食时。花蓟马成虫的存活不受它们是否直接取食豇豆切段表面的显著影响。然而，在取食表面覆盖的切段豆荚的花蓟马中观察到繁殖力显著下降。这表明直接取食豇豆的切段表面确实对蓟马的繁殖力有影响，为未来实验室中蓟马生长发育的研究提供了新的视角。我们的研究表明，涉及切段表面的实验可能会产生误导，目前正在进行进一步的调查以解决这些问题。
