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  • 1
    Online Resource
    Online Resource
    Divergence and convergence of gut microbiomes of wild insect pollinators
    American Society for Microbiology ; 2023
    In:  mBio
    Details
    In: mBio, American Society for Microbiology
    Abstract: Wild insect pollinators provide many key ecosystem services, and the microbes associated with these insect pollinators may influence their health. Therefore, understanding the diversity in microbiota structure and function, along with the potential mechanisms shaping the microbiota across diverse insect pollinators, is critical. Our study expands beyond existing knowledge of well-studied social bees, like honey bees, including members from other bee, wasp, butterfly, and fly pollinators. We infer ecological and evolutionary factors that may influence microbiome structure across diverse insect pollinator hosts and the functions that microbiota members may play. We highlight significant differentiation of microbiomes among diverse pollinators. Closer analysis suggests that dominant members may show varying levels of host association and functions, even in a comparison of closely related microbes found in bees and flies. This work suggests varied importance of ecological, physiological, and non-evolutionary filters in determining structure and function across largely divergent wild insect pollinator microbiomes.
    Type of Medium: Online Resource
    ISSN: 2150-7511
    URL: Article
    DOI: 10.1128/mbio.01270-23
    Language: English
    Publisher: American Society for Microbiology
    Publication Date: 2023
    detail.hit.zdb_id: 2557172-2
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  • 2
    Online Resource
    Online Resource
    Unexpected worker mating and colony-founding in a superorganism
    Springer Science and Business Media LLC ; 2023
    In:  Nature Communications Vol. 14, No. 1 ( 2023-09-07)
    Details
    In: Nature Communications, Springer Science and Business Media LLC, Vol. 14, No. 1 ( 2023-09-07)
    Abstract: The emergence of caste-differentiated colonies, which have been defined as ‘superorganisms’, in ants, bees, and wasps represents a major transition in evolution. Lifetime mating commitment by queens, pre-imaginal caste determination and lifetime unmatedness of workers are key features of these animal societies. Workers in superorganismal species like honey bees and many ants have consequently lost, or retain only vestigial spermathecal structures. However, bumble bee workers retain complete spermathecae despite 25-40 million years since their origin of superorganismality, which remains an evolutionary mystery. Here, we show (i) that bumble bee workers retain queen-like reproductive traits, being able to mate and produce colonies, underlain by queen-like gene expression, (ii) the social conditions required for worker mating, and (iii) that these abilities may be selected for by early queen-loss in these annual species. These results challenge the idea of lifetime worker unmatedness in superorganisms, and provide an exciting new tool for the conservation of endangered bumble bee species.
    Type of Medium: Online Resource
    ISSN: 2041-1723
    URL: Article
    DOI: 10.1038/s41467-023-41198-6
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 2553671-0
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  • 3
    Online Resource
    Online Resource
    Dynamic Changes of Gut Microbial Communities of Bumble Bee Queens through Important Life Stages
    American Society for Microbiology ; 2019
    In:  mSystems Vol. 4, No. 6 ( 2019-12-17)
    Details
    In: mSystems, American Society for Microbiology, Vol. 4, No. 6 ( 2019-12-17)
    Abstract: Bumble bees are important pollinators in natural and agricultural ecosystems. Their social colonies are founded by individual queens, which, as the predominant reproductive females of colonies, contribute to colony function through worker production and fitness through male and new queen production. Therefore, queen health is paramount, but even though there has been an increasing emphasis on the role of gut microbiota for animal health, there is limited information on the gut microbial dynamics of bumble bee queens. Employing 16S rRNA amplicon sequencing and quantitative PCR, we investigate how the adult life stage and physiological state influence a queen’s gut bacterial community diversity and composition in unmated, mated, and ovipositing queens of Bombus lantschouensis . We found significant shifts in total gut microbe abundance and microbiota composition across queen states. There are specific compositional signatures associated with different stages, with unmated and ovipositing queens showing the greatest similarity in composition and mated queens being distinct. The bacterial genera Gilliamella , Snodgrassella , and Lactobacillus were relatively dominant in unmated and ovipositing queens, with Bifidobacterium dominant in ovipositing queens only. Bacillus , Lactococcus , and Pseudomonas increased following queen mating. Intriguingly, however, further analysis of unmated queens matching the mated queens in age showed that changes are independent of the act of mating. Our study is the first to explore the gut microbiome of bumble bee queens across key life stages from adult eclosion to egg laying and provides useful information for future studies of the function of gut bacteria in queen development and colony performance. IMPORTANCE Bumble bee queens undergo a number of biological changes as they transition through adult emergence, mating, overwintering, foraging, and colony initiation including egg laying. Therefore, they represent an important system to understand the link between physiological, behavioral, and environmental changes and host-associated microbiota. It is plausible that the bumble bee queen gut bacteria play a role in shaping the ability of the queen to survive environmental extremes and reproduce, due to long-established coevolutionary relationships between the host and microbiome members.
    Type of Medium: Online Resource
    ISSN: 2379-5077
    URL: Article
    DOI: 10.1128/mSystems.00631-19
    Language: English
    Publisher: American Society for Microbiology
    Publication Date: 2019
    detail.hit.zdb_id: 2844333-0
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  • 4
    Online Resource
    Online Resource
    Dynamic Change of Gut Microbiota in the Male Bee of Bombus terrestris (Hymenoptera: Apidae)
    Canadian Center of Science and Education ; 2021
    In:  Journal of Agricultural Science Vol. 13, No. 9 ( 2021-08-15), p. 163-
    Details
    In: Journal of Agricultural Science, Canadian Center of Science and Education, Vol. 13, No. 9 ( 2021-08-15), p. 163-
    Abstract: The gut microbiota plays a key role in the development and health of bumble bees. Male bees are important for the reproductive activity of a colony, yet there are few studies on their gut microbiota. By using qPCR, we found that significant changes in total bacteria and six important bacteria genera from different developmental age points in males. And we compare the gut bacteria of male bees with workers. The results indicate that Gilliamella, Snodgrassella, and Lactobacillus are the dominant gut bacteria in male bees, which is consistent with the previous studies in worker bees, however, there are more total bacteria in male bees. Another gut bacteria genus, Bacillus may be a probiotic bacteria for reproduction in male bees, although the possible function of these bacteria require further study. This research can provide insight into the relationship between the bacterial community and the physiological health and reproductive capacity of male bumble bees.
    Type of Medium: Online Resource
    ISSN: 1916-9760 , 1916-9752
    URL: Article
    DOI: 10.5539/jas.v13n9p163
    Language: Unknown
    Publisher: Canadian Center of Science and Education
    Publication Date: 2021
    detail.hit.zdb_id: 2501913-2
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  • 5
    Online Resource
    Online Resource
    Table_9.XLSX
    Frontiers Media SA ; 2021
    In:  Frontiers in Microbiology Vol. 12 ( 2021-6-2)
    Details
    In: Frontiers in Microbiology, Frontiers Media SA, Vol. 12 ( 2021-6-2)
    Abstract: The honey bee is one of the most important pollinators in the agricultural system and is responsible for pollinating a third of all food we eat. Sacbrood virus (SBV) is a member of the virus family Iflaviridae and affects honey bee larvae and causes particularly devastating disease in the Asian honey bees, Apis cerana . Chinese Sacbrood virus (CSBV) is a geographic strain of SBV identified in China and has resulted in mass death of honey bees in China in recent years. However, the molecular mechanism underlying SBV infection in the Asian honey bee has remained unelucidated. In this present study, we employed high throughput next-generation sequencing technology to study the host transcriptional responses to CSBV infection in A. cerana larvae, and were able to identify genome-wide differentially expressed genes associated with the viral infection. Our study identified 2,534 differentially expressed genes (DEGs) involved in host innate immunity including Toll and immune deficiency (IMD) pathways, RNA interference (RNAi) pathway, endocytosis, etc. Notably, the expression of genes encoding antimicrobial peptides ( abaecin , apidaecin , hymenoptaecin , and defensin ) and core components of RNAi such as Dicer-like and Ago2 were found to be significantly upregulated in CSBV infected larvae. Most importantly, the expression of Sirtuin target genes, a family of signaling proteins involved in metabolic regulation, apoptosis, and intracellular signaling was found to be changed, providing the first evidence of the involvement of Sirtuin signaling pathway in insects’ immune response to a virus infection. The results obtained from this study provide novel insights into the molecular mechanism and immune responses involved in CSBV infection, which in turn will contribute to the development of diagnostics and treatment for the diseases in honey bees.
    Type of Medium: Online Resource
    ISSN: 1664-302X
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    URL: Article
    DOI: 10.3389/fmicb.2021.615893
    DOI: 10.3389/fmicb.2021.615893.s001
    DOI: 10.3389/fmicb.2021.615893.s002
    DOI: 10.3389/fmicb.2021.615893.s003
    DOI: 10.3389/fmicb.2021.615893.s004
    DOI: 10.3389/fmicb.2021.615893.s005
    DOI: 10.3389/fmicb.2021.615893.s006
    DOI: 10.3389/fmicb.2021.615893.s007
    DOI: 10.3389/fmicb.2021.615893.s008
    DOI: 10.3389/fmicb.2021.615893.s009
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2021
    detail.hit.zdb_id: 2587354-4
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  • 6
    Online Resource
    Online Resource
    Isolation of Bacillus From the Gut of Bombus terrestris and Its Correlation in Queen Mating
    Canadian Center of Science and Education ; 2021
    In:  Journal of Agricultural Science Vol. 13, No. 9 ( 2021-08-15), p. 155-
    Details
    In: Journal of Agricultural Science, Canadian Center of Science and Education, Vol. 13, No. 9 ( 2021-08-15), p. 155-
    Abstract: The gut of bumblebees harbors bacteria that play a crucial role in physiology, nutrition, and health. The mating rate is important for the reproductive activity of a colony; however, few studies have investigated the relationship between mating and gut bacteria. In this study, bacterial functions were identified in the intestinal tract of bumblebees, and biochemical identification and screening were performed using genetic detection technology. By isolating and identifying bacteria, we obtained a single strain and fed it to queens. The results indicated that Bacillus cereus and Bacillus pumilus are present in the gut. The queen mating rates were 48.89% at the period of 4 days and higher than 28.89% mating rates of the control group (P & lt; 0.05), and the latency time were 16.90 min (from entering the mating cage to mating success) and decreased than control (P & lt; 0.05) which was 28.20 min. This finding confirmed that Bacillus was important in Bombus terrestris mating.
    Type of Medium: Online Resource
    ISSN: 1916-9760 , 1916-9752
    URL: Article
    DOI: 10.5539/jas.v13n9p155
    Language: Unknown
    Publisher: Canadian Center of Science and Education
    Publication Date: 2021
    detail.hit.zdb_id: 2501913-2
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