Waqas Muhammad Saad, Lin Lulu, Shoaib Ali Ahmed Zaky, Cheng Xinlai, Zhang Qianqian, Elabasy Asem Saad Saad, Shi Zuhua
Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou, China.
Plant Protection Research Institute, Agricultural Research Centre, Cairo, Egypt.
Environ Entomol. 2020 Jun 13;49(3):553-560. doi: 10.1093/ee/nvaa023.
Effects of temperature on the development, survival, reproduction, longevity and sex ratio of the cotton mealybug, Phenacoccus solenopsis Tinsley, was assessed at five constant temperatures ranging from 20 to 35°C and five fluctuating temperatures ranging from 15 to 40°C under laboratory conditions. Results showed that nymphal development duration, preoviposition period, oviposition period, fecundity, and adult longevity were reduced significantly with increasing temperature until 30°C, but developmental duration of third female nymphal instar and female adult longevity was longer at 35°C than 30°C, and no males could emerge from pupae at the constant temperature 35°C. Fluctuating temperature, in general, significantly accelerated the nymphal developmental duration, prolonged preoviposition period, shortened oviposition period, reduced fecundity, lowered the survival rate of nymphs, and decreased adult longevity of males and females compared to their mean corresponding constant temperature. Overall, it is suggested that one should be prudent when applying the obtained results under constant and fluctuating temperatures under laboratory conditions.
在实验室条件下，评估了温度对棉花粉蚧（Phenacoccus solenopsis Tinsley）发育、存活、繁殖、寿命和性别比例的影响，设置了20至35°C的五个恒温以及15至40°C的五个变温。结果表明，若虫发育历期、产卵前期、产卵期、繁殖力和成虫寿命随温度升高至30°C时显著缩短，但在35°C时，第三龄雌若虫发育历期和雌成虫寿命比30°C时更长，且在35°C恒温下蛹不能羽化出雄虫。总体而言，与相应的平均恒温相比，变温通常会显著加速若虫发育历期、延长产卵前期、缩短产卵期、降低繁殖力、降低若虫存活率，并缩短雌雄成虫寿命。总之，在将实验室恒温及变温条件下获得的结果应用于实际时应谨慎。
