The Impact of High-Temperature Stress on the Growth and Development of Tuta absoluta (Meyrick)

文献类型： 外文期刊

第一作者： Zhou, Junhui

作者： Zhou, Junhui;Luo, Wenfang;Song, Suqin;Zhu, Xiafen;Gao, Shuaijun;He, Wei;Xu, Jianjun;Wang, Zhuhong

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关键词： Tuta absoluta; high-temperature stress; survival rate; growth and development

期刊名称：INSECTS （ 影响因子：2.7； 五年影响因子：2.9 ）

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年卷期： 2024 年 15 卷 6 期

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收录情况： SCI

摘要： Simple Summary Tuta absoluta (Meyrick) is an invasive insect pest that poses a threat to solanaceous crops. In recent years, the occurrences of extremely high temperature have been increasing due to climate change. Therefore, it is important to study the effect of high temperature on the growth and development of T. absoluta. In this study, when the eggs, pupae, and adults of T. absoluta were exposed to high-temperature stress, the pupal stage exhibited the highest sensitivity. This was demonstrated by a significant decrease in emergence rate, longevity, and fecundity. High-temperature stress during the egg stage resulted in a cascading effect, leading to a reduction in the adult longevity. This study provides a new insight for the integrated management of T. absoluta under high temperature. Insect life processes and reproductive behaviors are significantly affected by extremely high temperatures. This study focused on Tuta absoluta, which poses a severe threat to tomato cultivars. The effects of intense heat stress on the growth, development, oviposition, and longevity of T. absoluta were investigated. This investigation encompassed various developmental stages, including eggs, pupae, and adults. This study revealed that egg hatching and pupa emergence rates were significantly reduced at a temperature of 44 degrees C maintained for 6 h. The longevity of adults that emerged after the egg and pupal stages were exposed to 44 degrees C for 6 h was significantly reduced compared to the control. Notably, there was no significant variation in adult fecundity after egg-stage exposure to high temperatures. However, all treatments exhibited significantly reduced fecundity compared to the control after exposure to high temperatures during the pupal stage. Adult survival rates after exposure to 40 degrees C and 44 degrees C for 3 h were 74.29% and 22.40%, respectively, dramatically less than that of the control, which was 100%. However, no significant differences were noted in terms of longevity and egg production. These results offer a better understanding of the complex interactions between extreme temperatures and the life history traits of T. absoluta, thereby offering valuable insights for implementing management strategies to alleviate its impact on tomato crops in response to climate change.

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