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Microbiomes, diet flexibility, and the spread of a beetle parasite of honey bees

文献类型： 外文期刊

作者： Huang, Qiang 1 ; Han, Wensu 3 ; Posada-Florez, Francisco 4 ; Evans, Jay D. 4 ;

作者机构： 1.Jiangxi Agr Univ, Honeybee Res Inst, Nanchang, Peoples R China

2.Univ Texas Austin, Dept Integrat Biol, Austin, TX 78712 USA

3.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou, Peoples R China

4.ARS, USDA, Beltsville Agr Res Ctr, Bee Res Lab, Beltsville, MD USA

关键词： invasive pest; symbiosis; beetle; bee; engineered bacteria

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：4.0； 五年影响因子：5.1 ）

ISSN：

年卷期： 2024 年 15 卷

页码：

收录情况： SCI

摘要： Invasive pests may disturb and destructively reformat the local ecosystem. The small hive beetle (SHB), Aethina tumida, originated in Africa and has expanded to America, Australia, Europe, and Asia. A key factor facilitating its fast global expansion is its ability to subsist on diverse food inside and outside honey bee colonies. SHBs feed on various plant fruits and exudates in the environment while searching for bee hives. After sneaking into a bee hive, they switch their diet to honey, pollen, and bee larvae. How SHBs survive on such a broad range of food remains unclear. In this study, we simulated the outside and within hive stages by providing banana and hive resources and quantified the SHB associated microbes adjusted by the diet. We found that SHBs fed on bananas were colonized by microbes coding more carbohydrate-active enzymes and a higher alpha diversity than communities from SHBs feeding on hive products or those collected directly from bee hives. SHBs fed on bananas and those collected from the hive showed high symbiont variance, indicated by the beta diversity. Surprisingly, we found the honey bee core symbiont Snodgrassella alvi in the guts of SHBs collected in bee hives. To determine the role of S. alvi in SHB biology, we inoculated SHBs with a genetically tagged culture of S. alvi, showing that this symbiont is a likely transient of SHBs. In contrast, the fungus Kodamaea ohmeri is the primary commensal of SHBs. Diet-based microbiome shifts are likely to play a key role in the spread and success of SHBs.

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