The Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, Guizhou Province, China.
J Econ Entomol. 2024 Oct 14;117(5):1739-1752. doi: 10.1093/jee/toae199.
Exploring the impact of low-temperature storage on the fitness of natural enemy insects is crucial for practical field applications because this parameter directly influences their potential for population growth and effective pest control. Eocanthecona furcellata (Wolff) (Hemiptera: Pentatomidae) is widely used in biological pest control. This study aimed to identify optimal storage stages, temperatures, and durations for E. furcellata to produce high-quality individuals for practical use. The quality of E. furcellata after storage was evaluated by assessing parameters such as predatory capacity and fecundity, along with age-stage, two-sex life table. The findings revealed that the adult stage was the optimal storage form for E. furcellata, and the most favorable temperature for storage was 12 °C. Adult females had the highest predatory ability after 15 days of storage at 12 °C. Although survival rates declined with prolonged storage, they remained above 50% after 30 days, and longevity, fecundity, and predatory capacity of surviving individuals remained comparable to those of individuals in the control group (rearing at a constant temperature of 26 °C without low-temperature storage). The effects of low-temperature storage extended to the F1 generation of E. furcellata, which exhibited maximum mean longevity, fecundity, net reproductive rate, and mean generation time as well as fastest population growth after 30 days of storage at 12 °C. These results can be used to achieve optimal low-temperature storage conditions for E. furcellata production, particularly for extending its shelf life.
探讨低温储存对天敌昆虫适应性的影响对于实际田间应用至关重要，因为这一参数直接影响其种群增长和有效防治害虫的潜力。茶翅蝽(Eocanthecona furcellata (Wolff))（半翅目：蝽科）被广泛用于生物防治害虫。本研究旨在确定茶翅蝽的最佳储存阶段、温度和持续时间，以生产出高质量的个体用于实际应用。通过评估捕食能力和繁殖力等参数，以及龄期-两性生命表，评估储存后茶翅蝽的质量。研究结果表明，成虫阶段是茶翅蝽最适合的储存形式，最适合的储存温度为 12°C。在 12°C 下储存 15 天后，雌成虫的捕食能力最高。虽然随着储存时间的延长，存活率下降，但在 30 天后仍保持在 50%以上，幸存个体的寿命、繁殖力和捕食能力与对照组（在 26°C 的恒温下饲养，不进行低温储存）的个体相当。低温储存的影响扩展到茶翅蝽的 F1 代，在 12°C 下储存 30 天后，其表现出最长的平均寿命、最高的繁殖力、最大的净生殖率和平均世代时间，以及最快的种群增长率。这些结果可用于实现茶翅蝽最佳低温储存条件的生产，特别是为延长其货架期。
