Scholarlink

<p>The Oriental fruit fly, <i>Bactrocera dorsalis</i> (Diptera: Tephritidae), is a notorious pest that inflicts substantial economic detriment on the cultivation of tropical fruits. Using multiple biological control agents is a promising strategy for controlling <i>B. dorsalis</i>. However, the complex interactions among these agents, especially between entomopathogens and predators, and their combined efficacy against <i>B. dorsalis</i> are not fully understood. This study investigated how predation risk from the mantis <i>Hierodula patellifera</i> affected the efficacy of entomopathogen <i>Beauveria bassiana</i> against <i>B. dorsalis</i>. We also analyzed predator-induced immunity and changes in grooming behavior in <i>B. dorsalis</i> to understand the underlying mechanisms. The studies showed that a five&#xa0;day predation threat enhanced the efficacy of entomopathogens against <i>B. dorsalis</i>, while a 15&#xa0;day threat reduced it. Further experiments revealed that <i>B. dorsalis</i> exposed to a five&#xa0;day threat exhibited reduced lysozyme content and spore-grooming behavior, contributing to a decreased survival probability when infected. In contrast, those exposed to a 15&#xa0;day threat increased their spore-grooming behavior, which enhanced their survival probability. These findings demonstrate that predation risk duration critically determines the success of entomopathogen-based biocontrol: short-term predation stress (five&#xa0;days) suppresses fly immunity and grooming behavior, enhancing <i>B. bassiana</i> efficacy, while prolonged stress (15&#xa0;days) triggers adaptive responses that reduce pathogen effectiveness. This temporal dynamic indicates that coordinated release timing of predators and entomopathogens is essential for maximizing biocontrol success against <i>B. dorsalis</i>.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Predation risks alter lysozyme levels and grooming behavior in Bactrocera dorsalis to affect entomopathogen success

  • 期刊论文

  • 发表日期：

    2025年10月13日

查看全文
  • Lu Xiao,
  • Xianli Lu,
  • Fengqin Cao,
  • Xin Liu,
  • Xingyu Geng,
  • Lang Fu,
  • Jian Wen

摘要

The Oriental fruit fly, Bactrocera dorsalis (Diptera: Tephritidae), is a notorious pest that inflicts substantial economic detriment on the cultivation of tropical fruits. Using multiple biological control agents is a promising strategy for controlling B. dorsalis. However, the complex interactions among these agents, especially between entomopathogens and predators, and their combined efficacy against B. dorsalis are not fully understood. This study investigated how predation risk from the mantis Hierodula patellifera affected the efficacy of entomopathogen Beauveria bassiana against B. dorsalis. We also analyzed predator-induced immunity and changes in grooming behavior in B. dorsalis to understand the underlying mechanisms. The studies showed that a five day predation threat enhanced the efficacy of entomopathogens against B. dorsalis, while a 15 day threat reduced it. Further experiments revealed that B. dorsalis exposed to a five day threat exhibited reduced lysozyme content and spore-grooming behavior, contributing to a decreased survival probability when infected. In contrast, those exposed to a 15 day threat increased their spore-grooming behavior, which enhanced their survival probability. These findings demonstrate that predation risk duration critically determines the success of entomopathogen-based biocontrol: short-term predation stress (five days) suppresses fly immunity and grooming behavior, enhancing B. bassiana efficacy, while prolonged stress (15 days) triggers adaptive responses that reduce pathogen effectiveness. This temporal dynamic indicates that coordinated release timing of predators and entomopathogens is essential for maximizing biocontrol success against B. dorsalis.