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Physiological and behavioral basis of diamondback moth Plutella xylostella migration and its association with heat stress.
Yang, Fan; Wang, Pan; Zheng, Min; Hou, Xiao-Yu; Zhou, Li-Lin; Wang, Yong; Si, Sheng-Yun; Wang, Xiao-Ping; Chapman, Jason W; Wang, Yu-Meng; Hu, Gao.
Afiliación
  • Yang F; Institute of Vegetables, Wuhan Academy of Agricultural Science, Wuhan, P. R. China.
  • Wang P; Institute of Vegetables, Wuhan Academy of Agricultural Science, Wuhan, P. R. China.
  • Zheng M; Institute of Vegetables, Wuhan Academy of Agricultural Science, Wuhan, P. R. China.
  • Hou XY; Institute of Vegetables, Wuhan Academy of Agricultural Science, Wuhan, P. R. China.
  • Zhou LL; Institute of Vegetables, Wuhan Academy of Agricultural Science, Wuhan, P. R. China.
  • Wang Y; Institute of Vegetables, Wuhan Academy of Agricultural Science, Wuhan, P. R. China.
  • Si SY; Institute of Vegetables, Wuhan Academy of Agricultural Science, Wuhan, P. R. China.
  • Wang XP; Hubei Key Laboratory of Insect Resources Utilization and Sustainable Pest Management, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China.
  • Chapman JW; Department of Entomology, Nanjing Agricultural University, Nanjing, P. R. China.
  • Wang YM; Center for Ecology and Conservation, and Environment and Sustainability Institute, University of Exeter - Cornwall Campus, Penryn, UK.
  • Hu G; Department of Entomology, Nanjing Agricultural University, Nanjing, P. R. China.
Pest Manag Sci ; 80(4): 1751-1760, 2024 Apr.
Article en En | MEDLINE | ID: mdl-38009258
BACKGROUND: Migration is a strategy that shifts insects to more favorable habitats in response to deteriorating local environmental conditions. The ecological factors that govern insect migration are poorly understood for many species. Plutella xylostella causes great losses in Brassica vegetable and oilseed crops, and undergoes mass migration. However, the physiological and behavioral basis for distinguishing migratory individuals and the factors driving its migration remain unclear. RESULTS: Daily light trap catches conducted from April to July in a field population of P. xylostella in central China revealed a sharp decline in abundance from late-May. Analysis of ovarian development levels showed that the proportion of sexually immature females gradually increased, while the mating rate decreased, indicating that generations occurring in May mainly resulted from local breeding and that emigration began in late-May. Physiological and behavioral analyses revealed that emigrant populations had a higher take-off proportion, stronger flight capacity and greater energy reserves of triglyceride compared to residents. Furthermore, a gradual increase in temperature from 24 °C to >30 °C during larval development resulted in a significant delay in oogenesis and increased take-off propensity of adults compared with the control treatment reared at a constant temperature of 24 °C. CONCLUSION: Our results provide the physiological and behavioral factors that underpin mass migration in P. xylostella, and demonstrate that exposure to increased temperature increases their migration propensity at the cost of reproductive output. This study sheds light on understanding the factors that influence population dynamics, migratory propensity and reproductive tradeoffs in migratory insects. © 2023 Society of Chemical Industry.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Brassica / Mariposas Nocturnas Límite: Animals / Female / Humans Idioma: En Revista: Pest Manag Sci Asunto de la revista: TOXICOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Brassica / Mariposas Nocturnas Límite: Animals / Female / Humans Idioma: En Revista: Pest Manag Sci Asunto de la revista: TOXICOLOGIA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido