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Subject:
Re: EFB
From:
Pete B <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Sun, 16 Jun 2019 08:56:52 -0400
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Re HB gut microbiota

> It has been established that eight or nine species clusters account for 95–99% of the gut microbiota in Ap. mellifera. These include Snodgrassella alvi (Proteobacteria), Giliamella apicola (Proteobacteria), Bartonella apis (Proteobacteria), Frischella perrara (Proteobacteria), Lactobacillus Firm-4 (Firmicutes), Lactobacillus Firm-5 (Firmicutes), Bifidobacterium asteroides (Actinobacteria) and Parasaccharibacter apium (Proteobacteria). These groups are consistent regardless of environmental, geographical and genetic differences between hosts (Kwong and Moran, 2016).  

> The eusocial nature of Ap. mellifera strongly supports the development of a core microbiota, owing to reliable routes of transmission. Ap. mellifera hives share faecal matter (and microbes) far more than non-eusocial organisms, and as a result, a relatively constant colony microbiota is maintained (Engel et al., 2012; Martinson et al., 2012; Powell et al., 2014). Over time, as colonies split and multiply, some microbes could have evolved with the Ap. mellifera colony, helping the colony to overwinter (or resist disease, etc.) and thus ensuring their own survival.  

> Probiotics, largely of the genera Lactobacillus and Bacillus and obtained via isolation from the Ap. mellifera gut as well as from human probiotic products, have been shown in recent years to increase honey production [etc. etc.] While the prospect of harnessing the symbiotic microbes within their bee host to improve honey bee health is exciting, more research needs to be conducted in this growing field, and any claims of probiotic benefits should be approached with a healthy dose of scepticism.

Romero, S., Nastasa, A., Chapman, A., Kwong, W. K., & Foster, L. J. (2019). The honey bee gut microbiota: strategies for study and characterization. Insect molecular biology.

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