Spider mites escape bacterial infection by avoiding contaminated food.
Spider mites escape bacterial infection by avoiding contaminated food.
复制标题
蜘蛛螨通过避免受污染的食物来逃避细菌感染。
DOI：
10.1007/s00442-018-4316-y
复制
发表时间：
2019
期刊：
影响因子：
2.7
通讯作者：
Magalhães,Sara
中科院分区：
文献类型：
--
作者：
Zélé,Flore;Santos-Matos,Gonçalo;Figueiredo,AlexandreRT;Eira,Cátia;Pinto,Catarina;Laurentino,TelmaG;Sucena,Élio;Magalhães,Sara
To fight infection, arthropods rely on the deployment of an innate immune response but also upon physical/chemical barriers and avoidance behaviours. However, most studies focus on immunity, with other defensive mechanisms being relatively overlooked. We have previously shown that the spider miteTetranychus urticaedoes not mount an induced immune response towards systemic bacterial infections, entailing very high mortality rates. Therefore, we hypothesized that other defence mechanisms may be operating to minimize infection risk. Here, we test (a) if spider mites are also highly susceptible to other infection routes—spraying and feeding—and (b) if they display avoidance behaviours towards infected food. Individuals sprayed with or fed onEscherichia coliorPseudomonas putidasurvived less than the control, pointing to a deficient capacity of the gut epithelium, and possibly of the cuticle, to contain bacteria. Additionally, we found that spider mites prefer uninfected food to food contaminated with bacteria, a choice that probably does not rely on olfactory cues. Our results suggest that spider mites may rely mostly on avoidance behaviours to minimize bacterial infection and highlight the multi-layered nature of immune strategies present in arthropods.
