Affiliation:
1. Key Laboratory of Agricultural Biosafety and Green Production of Upper Yangtze River, College of Plant Protection, Southwest University , Chongqing, Beibei 400716 , China
2. Yibin Academy of Southwest University , Sichuan, Yibin 644000 , China
3. Institute of Vegetable, Tibet Academy of Agriculture and Animal Husbandry Sciences , Tibet, Lhasa 850032 , China
Abstract
Abstract
Penthaleus major (Dugés) is a significant agricultural pest that attacks various pasture, vegetable, and crop plants. Temperature plays a critical role in the life history of P. major. However, there is limited understanding of its life table at different temperatures and cold tolerance. This study aimed to elucidate the performance of P. major by constructing life tables at 6, 9, 12, 15, 18, 21, and 24 °C. The results showed that P. major successfully developed at 9‒21 °C. However, no adults emerged at 6°C, and no eggs hatched at 24 °C. The highest intrinsic rate of increase (r), finite rate of increase (λ), net reproductive rate (R0), and gross reproductive rate (GRR) were observed at 12 °C. The supercooling point (SCP) exhibited significant variations at different developmental stages. The highest SCP (‒9.75 °C) was recorded in 10-day-old female adults, while the lowest SCP (‒24.37 °C) was observed in larvae. For female adult mites of 2, 6, and 10 days old, the low lethal temperatures (LLT50) were ‒14.63, ‒12.03, and ‒11.08 °C, respectively. This study provided valuable insights for modeling and predicting the population dynamics of P. major in the field and offered implications for developing successful management strategies.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
Shuangcheng Cooperative Agreement Research
Publisher
Oxford University Press (OUP)
Subject
Insect Science,Ecology,General Medicine
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