Hassan Md Nasimul, Ahmed Faysal, Tonni Farhana Akter, Meem Mst Masuma Momtaj, Quadir Quazi Forhad, Gotoh Tetsuo, Ullah Mohammad Shaef
Laboratory of Applied Entomology and Acarology, Department of Entomology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
Laboratory of Plant Nutrition and Environmental Chemistry, Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
Plants (Basel). 2025 Jun 9;14(12):1765. doi: 10.3390/plants14121765.
The red spider mite, , is a significant pest of various crops, and silicon (Si), a beneficial micronutrient, serves as a physical defense against herbivores when accumulated in plant tissues. This study examined the effects of silicon on the biology of on plants treated with 0 ppm (control), 28, and 56 ppm silicon concentrations. The results showed that silicon treatments notably affected mite development. At the highest concentration of 56 ppm Si, females exhibited the longest immature period, shortest lifespan, and shortest oviposition period. Egg production per female was highest at the 0 ppm Si level (94.62) and lowest at the 56 ppm Si concentration (42.29). Life table parameters, including the intrinsic rate of increase (), net reproductive rate (), finite rate of increase (λ), and gross reproductive rate (), declined progressively with increasing silicon concentrations. Compared to the control (0 ppm Si), the highest silicon level resulted in reductions of approximately 24% in , 55% in , 4% in , and 27% in , indicating a substantial negative impact of silicon on the reproductive potential of . These findings suggest that higher silicon levels effectively suppress populations and may be useful in integrated mite management strategies.
红叶螨是多种作物的重要害虫，而硅（Si）作为一种有益的微量营养素，在植物组织中积累时可作为抵御食草动物的物理防御。本研究考察了硅对用0 ppm（对照）、28 ppm和56 ppm硅浓度处理的红叶螨在番茄植株上生物学特性的影响。结果表明，硅处理显著影响螨的发育。在56 ppm Si的最高浓度下，雌螨的未成熟期最长，寿命最短，产卵期最短。每只雌螨的产卵量在0 ppm Si水平时最高（94.62），在56 ppm Si浓度时最低（42.29）。包括内禀增长率（r）、净生殖率（R0）、有限增长率（λ）和总生殖率（GRR）在内的生命表参数随着硅浓度的增加而逐渐下降。与对照（0 ppm Si）相比，最高硅水平导致r降低约24%、R0降低55%、λ降低4%、GRR降低27%，表明硅对红叶螨的繁殖潜力有显著负面影响。这些发现表明，较高的硅水平能有效抑制红叶螨种群数量，可能在螨类综合管理策略中有用。
