Zhong Yuqi, Liao Xiaolan, Hou Maolin
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100093, China.
College of Plant Protection, Hunan Agricultural University, Changsha 410028, China.
Insects. 2023 Feb 24;14(3):226. doi: 10.3390/insects14030226.
Low-temperature storage (LTS) is a way to adjust natural enemy development to meet field release needs and to protect natural enemies from the odds of long-distance transportation. The mirid bug Reuter (Hemiptera: Miridae) is an important predator of planthoppers and leafhoppers in rice fields. In this study, the LTS effects were measured on the predatory capacity and reproduction of the mirid adults (provided with 20% honey solution and stored at 13 °C for 12 days), and the fitness of the F1 generation of these adults. Higher predation of the eggs of the brown planthopper (Stål) (Hemiptera: Delphacidae) was observed in the post-storage females than in the control females. The functional responses of adults, either exposed to LTS or not, to planthopper eggs fitted well with Holling type II functional responses. Longevity was not affected by LTS, whereas the number of offspring nymphs was 55.6% lower in the post-storage females than in the control females. The fitness of the offspring generation was not affected by the LTS of parental adults. The findings are discussed with their relevance to biological control.
低温储存（LTS）是一种调节天敌发育以满足田间释放需求并保护天敌免受长途运输风险影响的方法。盲蝽科昆虫赖氏盲蝽（半翅目：盲蝽科）是稻田中稻飞虱和叶蝉的重要捕食者。在本研究中，测定了低温储存对成年盲蝽（提供20%蜂蜜溶液并在13℃下储存12天）的捕食能力和繁殖能力以及这些成年盲蝽F1代适合度的影响。与对照雌性相比，储存后的雌性对褐飞虱（半翅目：飞虱科）卵的捕食量更高。无论是否经历低温储存，成年盲蝽对稻飞虱卵的功能反应均符合Holling II型功能反应。寿命不受低温储存的影响，而储存后的雌性若虫后代数量比对照雌性低55.6%。亲本成虫的低温储存对后代适合度没有影响。结合其与生物防治的相关性对这些发现进行了讨论。
