Effects of live yeasts and their metabolic products on bumble bee microcolony development

IF 2.2 3区农林科学 Q1 ENTOMOLOGY

Apidologie Pub Date : 2025-09-16 DOI:10.1007/s13592-025-01214-8

Danielle Rutkowski, Makena Weston, Rachel L. Vannette

{"title":"Effects of live yeasts and their metabolic products on bumble bee microcolony development","authors":"Danielle Rutkowski, Makena Weston, Rachel L. Vannette","doi":"10.1007/s13592-025-01214-8","DOIUrl":null,"url":null,"abstract":"<div><p>Yeasts are common symbionts of bumble bees and their nests, sometimes providing health benefits to their bee hosts. The mechanisms underlying these yeast-derived benefits remain unknown, though hypotheses include direct nutrition from ingestion of fungal cells, resource supplementation, or pathogen protection. We tested how adding living yeasts or their metabolic products to <i>Bombus impatiens</i> diets affects microcolony performance, including survival, reproduction, and pathogen presence. We additionally assessed effects of yeast treatments on diet (nectar and pollen) chemical composition using untargeted metabolomics. Yeasts had minimal impacts on colony performance. While yeasts slightly accelerated offspring production, some treatments also interacted with <i>Aspergillus</i> to reduce reproductive output. Yeast treatments slightly altered chemical composition of nectar, but most distinguishing compounds were unidentified. Our results suggest limited effects of yeasts via direct nutrition, resource supplementation, or modification of diets, instead suggesting that the effects of yeast supplementation are context-dependent, and more research is necessary to better understand the mechanisms underlying their impacts on bee hosts.</p></div>","PeriodicalId":8078,"journal":{"name":"Apidologie","volume":"56 5","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Apidologie","FirstCategoryId":"97","ListUrlMain":"https://link.springer.com/article/10.1007/s13592-025-01214-8","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENTOMOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Yeasts are common symbionts of bumble bees and their nests, sometimes providing health benefits to their bee hosts. The mechanisms underlying these yeast-derived benefits remain unknown, though hypotheses include direct nutrition from ingestion of fungal cells, resource supplementation, or pathogen protection. We tested how adding living yeasts or their metabolic products to Bombus impatiens diets affects microcolony performance, including survival, reproduction, and pathogen presence. We additionally assessed effects of yeast treatments on diet (nectar and pollen) chemical composition using untargeted metabolomics. Yeasts had minimal impacts on colony performance. While yeasts slightly accelerated offspring production, some treatments also interacted with Aspergillus to reduce reproductive output. Yeast treatments slightly altered chemical composition of nectar, but most distinguishing compounds were unidentified. Our results suggest limited effects of yeasts via direct nutrition, resource supplementation, or modification of diets, instead suggesting that the effects of yeast supplementation are context-dependent, and more research is necessary to better understand the mechanisms underlying their impacts on bee hosts.

查看原文本刊更多论文

活酵母及其代谢产物对大黄蜂微群落发育的影响

酵母是大黄蜂及其巢穴的常见共生体，有时对蜜蜂宿主的健康有益。这些酵母菌衍生益处的机制尚不清楚，尽管假设包括从摄取真菌细胞、资源补充或病原体保护中直接获得营养。我们测试了在凤仙花饮食中添加活酵母或其代谢产物如何影响微菌落性能，包括存活、繁殖和病原体存在。我们还使用非靶向代谢组学评估了酵母处理对饮食（花蜜和花粉）化学成分的影响。酵母对菌落性能的影响最小。虽然酵母略微加速了后代的产生，但一些处理也与曲霉相互作用，以减少生殖产量。酵母处理稍微改变了花蜜的化学成分，但大多数有区别的化合物是未知的。我们的研究结果表明，酵母通过直接营养、资源补充或改变饮食的影响有限，相反，酵母补充的影响是依赖于环境的，需要更多的研究来更好地了解它们对蜜蜂宿主影响的机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Apidologie 生物-昆虫学

CiteScore

5.10

自引率

8.30%

发文量

审稿时长

3 months

期刊介绍： Apidologie is a peer-reviewed journal devoted to the biology of insects belonging to the superfamily Apoidea. Its range of coverage includes behavior, ecology, pollination, genetics, physiology, systematics, toxicology and pathology. Also accepted are papers on the rearing, exploitation and practical use of Apoidea and their products, as far as they make a clear contribution to the understanding of bee biology. Apidologie is an official publication of the Institut National de la Recherche Agronomique (INRA) and Deutscher Imkerbund E.V. (D.I.B.)