双重麻烦吗?这是一个问题. 在不同的CO2度下,量化Tenebrio molitor在多种病原体的同时暴露的风险
Pascal Herren1, Claus Svendsen2, Carlotta Savio3
1UK Centre for Ecology & Hydrology, Maclean Building, Benson Lane, Crowmarsh Gifford, Wallingford, Oxfordshire OX10 8BB, United Kingdom; Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark; Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom.
Journal of invertebrate pathology
|January 11, 2025
概括
这项研究发现,黄粉虫中的真菌和细菌病原体大多具有添加性或对抗性相互作用,不受二氧化碳升高的影响. MIXTox模型有效地评估了大规模养的昆虫的疾病风险.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 昆虫病理学 昆虫病理学
- 环境毒理学环境毒理学
背景情况:
- 由于病原体和环境压力因素同时存在,不断扩大的昆虫养殖行业面临经济损失.
- 目前评估昆虫压力因子相互作用的方法有限,经常忽视剂量和时间的依赖性.
- 对大规模养昆虫的综合风险评估需要检测致命和次致命影响的方法.
研究的目的:
- 评估黄粉 (Tenebrio molitor) 幼虫中与真菌 (Metarhizium brunneum) 和细菌 (Bacillus thuringiensis) 病原体同时暴露的风险.
- 研究环境和高二氧化碳 (CO2) 度对病原体相互作用的影响.
- 评估混合物毒性 (MIXTox) 模型对分析复杂压力因子相互作用的有用性.
主要方法:
- 在不同的二氧化碳水平下,黄色粉幼虫暴露于M. brunneum和B. thuringiensis.
- 幼虫生物量,存活率和体重增加被测量在暴露后的14天和20天.
- 使用MIXTox模型分析了剂量依赖的相互作用,协同作用和对抗作用.
主要成果:
- 在两种CO2度下,病原体相互作用主要是对抗性或添加性的,这表明没有协同的负面影响.
- 升高的二氧化碳水平并没有显著改变真菌和细菌病原体之间的相互作用.
- 实验室试验没有显示病原体之间的直接抑制,这表明间接的敌对作用是由宿主昆虫介导的.
结论:
- MIXTox模型是量化疾病风险和了解大规模养昆虫中的病原体相互作用的宝贵工具.
- 在Tenebrio molitor中与M. brunneum和B. thuringiensis同时暴露不会导致协同致命性或增长减缓.
- 环境因素,如二氧化碳的升高,可能不会显著改变这些特定病原体相互作用的结果在黄粉.
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