Xia Shike, Ma Ningwei, Wang Peiling, Lu Yanhui
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Key Laboratory for Xinjiang Oasis Agricultural Pest Management and Plant Protection Resources Utilization, Agricultural College of Shihezi University, Shihezi 832003, China.
Insects. 2025 Mar 3;16(3):264. doi: 10.3390/insects16030264.
is a dominant endoparasitoid of aphids in cotton fields, yet empirical evidence on how temperature and humidity regulate its growth, development, and reproduction remains limited. To address this gap, we assessed the effects of both constant and fluctuating temperature, as well as various combinations of temperature and humidity, on the longevity, parasitism, and fecundity of this parasitoid. Our results revealed that adult longevity of was longer at 20 °C and 25 °C while significantly shortened at a high temperature (35 °C). Similarly, the parasitism rate, female ratio, emergence duration, and offspring longevity of the parasitoid were all superior at 20 °C and 25 °C compared to 15 °C and 35 °C. Moreover, the longevity of both male (6.96 ± 0.10 d) and female (6.88 ± 0.07 d) parasitoids was significantly extended at 25 °C and 60% RH. Temperature had a marked impact on the parasitic capability of parasitoids, with the number of parasitized daily by being significantly higher at 25 °C than at 15 °C and 35 °C. Nevertheless, humidity and the interaction between humidity and temperature had no significant influence on parasitic capacity. The parasitism of followed the Holling-II model, with the highest daily maximum parasitism observed at 25 °C. In conclusion, our study showed that 25 °C positively enhanced the fitness of , providing a valuable reference for indoor population expansion and field release of , potentially enhancing its effectiveness as a biological control agent against aphids.
是棉田蚜虫的优势体内寄生蜂，但关于温度和湿度如何调节其生长、发育和繁殖的实证证据仍然有限。为了填补这一空白，我们评估了恒定温度和波动温度以及温度和湿度的各种组合对这种寄生蜂寿命、寄生率和繁殖力的影响。我们的结果表明，在20℃和25℃时成虫寿命较长，而在高温（35℃）时显著缩短。同样，与15℃和35℃相比，该寄生蜂在20℃和25℃时的寄生率、雌虫比例、羽化持续时间和后代寿命都更优。此外，在25℃和60%相对湿度下，雄性（6.96±0.10天）和雌性（6.88±0.07天）寄生蜂的寿命均显著延长。温度对寄生蜂的寄生能力有显著影响，在25℃时每天被寄生的数量显著高于15℃和35℃时。然而，湿度以及湿度与温度之间的相互作用对寄生能力没有显著影响。的寄生情况符合Holling-II模型，在25℃时观察到的每日最大寄生量最高。总之，我们的研究表明，25℃能积极提高的适合度，为的室内种群扩增和田间释放提供了有价值的参考，可能会增强其作为蚜虫生物防治剂的有效性。
