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High-temperature responses of Myzus persicae and its parasitoid Aphidius gifuensis in relation to heat level, duration and developmental stage.
Pan, Ming-Zhen; Shen, Rui-Chun; Fu, Zhi-Xiao; Lu, Zhao-Zhi; Ma, Bei-Bei; Liu, Tong-Xian.
Afiliação
  • Pan MZ; Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Managemnent, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China.
  • Shen RC; Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Managemnent, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China.
  • Fu ZX; Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Managemnent, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China.
  • Lu ZZ; Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Managemnent, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China.
  • Ma BB; Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Managemnent, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China.
  • Liu TX; Institute of Entomology, Guizhou University, Guiyang, China.
Pest Manag Sci ; 80(9): 4628-4636, 2024 Sep.
Article em En | MEDLINE | ID: mdl-38877352
ABSTRACT

BACKGROUND:

Understanding how parasitoids respond to temperature is crucial for improving biological control strategies under the context of global warming. This study examined the suitability of Myzus persicae and its parasitoid Aphidius gifuensis to varying temperature conditions, as well as the stage-specific response of A. gifuensis to high temperatures.

RESULTS:

High temperatures had a significant impact on the both M. persicae and A. gifuensis. When exposed to 36°C, M. persicae developed more slowly and produced smaller adults compared to control, regardless of the duration of exposure (2, 4 or 6 h); additionally, the survival rate of M. persicae nymphs sharply decreased under these conditions. Exposure to 36°C for 4 h negatively impacted the development of A. gifuensis. Female parasitoids exposed to 32°C developed into smaller adults, whereas males exposed to all three temperature levels were smaller compared to control group. Female parasitoids exposed to high temperatures, regardless of the specific heat level and duration, exhibited reduced longevity and decreased fecundity. None of the parasitoids exposed to 36°C for 6 h daily developed into adults. Heat treated during early developmental stages (2 and 4 days old) had a greater influence on parasitoid development, whereas heat treatment at 4 and 6 days old had a more significant impact on its fecundity.

CONCLUSION:

High temperatures not only directly affected the performance of A. gifuensis, but also exerted indirect effects by influencing the quality of the host aphids M. persicae. The deleterious effects of high temperature on larvae can persist into the adult stage, affecting the longevity and reproduction of adults. These findings are important for the utilization of A. gifuensis in the control of M. persicae in warming environments. © 2024 Society of Chemical Industry.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Afídeos / Vespas / Temperatura Alta / Ninfa Limite: Animals Idioma: En Revista: Pest Manag Sci Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Afídeos / Vespas / Temperatura Alta / Ninfa Limite: Animals Idioma: En Revista: Pest Manag Sci Ano de publicação: 2024 Tipo de documento: Article