Quantitative variation in the core bacterial community associated with honey bees from <i>Varroa-</i>infested colonies

Marche, Maria Giovanna; Satta, Alberto; Floris, Ignazio; Pusceddu, Michelina; Buffa, Franco; Ruiu, Luca

doi:10.1080/00218839.2019.1589669

Cited by 21 publications

(16 citation statements)

References 60 publications

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“…It is thought that some of the viruses infesting mites can change Varroa behaviour, which presents a new perspective for finding targets to kill the mite [43]. Similarly to its impact on the virus community infecting bees, the mite also alters the honey bee's bacteriome [44,45], but the impact of such an association remains unknown.…”

Section: Varroa-virus Duomentioning

confidence: 99%

“…Indeed, parasited bees have a lower sugar responsiveness and a faster habituation to olfactory stimulation [52]. Moreover, Varroa provokes the down-regulation of immune gene expression in emerging infested adults [45], as well as proteomic changes in the honey bee's immune response [53][54][55]. It disrupts the bee's immune response by interfering in the cascade immune response [56].…”

Section: What Can It Do?mentioning

confidence: 99%

“…Also, the Varroa-virus duo plays a key role in the weakening of the colony [68]. Emerging adult bees that were parasitised during the pupal stage show a higher infection rate of DWV compared with non-parasitised individuals [45]. DWV infection induces pathological effects such as crumpled wings and reduced body size leading to behavioural impairment.…”

Section: The Impact Of Varroa Coupled With Other Stressors Of the Colonymentioning

confidence: 99%

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Varroa destructor: how does it harm Apis mellifera honey bees and what can be done about it?

Noël

Conte

Mondet

2020

Emerging Topics in Life Sciences

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Since its migration from the Asian honey bee (Apis cerana) to the European honey bee (Apis mellifera), the ectoparasitic mite Varroa destructor has emerged as a major issue for beekeeping worldwide. Due to a short history of coevolution, the host–parasite relationship between A. mellifera and V. destructor is unbalanced, with honey bees suffering infestation effects at the individual, colony and population levels. Several control solutions have been developed to tackle the colony and production losses due to Varroa, but the burden caused by the mite in combination with other biotic and abiotic factors continues to increase, weakening the beekeeping industry. In this synthetic review, we highlight the main advances made between 2015 and 2020 on V. destructor biology and its impact on the health of the honey bee, A. mellifera. We also describe the main control solutions that are currently available to fight the mite and place a special focus on new methodological developments, which point to integrated pest management strategies for the control of Varroa in honey bee colonies.

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Section: Varroa-virus Duomentioning

confidence: 99%

Section: What Can It Do?mentioning

confidence: 99%

Section: The Impact Of Varroa Coupled With Other Stressors Of the Colonymentioning

confidence: 99%

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Varroa destructor: how does it harm Apis mellifera honey bees and what can be done about it?

Noël

Conte

Mondet

2020

Emerging Topics in Life Sciences

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“…In colonies infected by the parasitic mite Varroa destructor , there are an increased number of S. alvi and a decrease of Lactobacillaceae in the gut of workers [ 18 , 19 ]. Additionally, the microbiota of the parasitized larvae is similar to that of V. destructor [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of the Honeybee (Apis mellifera) Gut Microbiota Throughout the Overwintering Period in Canada

et al. 2020

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Microbial symbionts inhabiting the honeybee gut (i.e., gut microbiota) are essential for food digestion, immunity, and gut protection of their host. The taxonomic composition of the gut microbiota is dynamic throughout the honeybee life cycle and the foraging season. However, it remains unclear how drastic changes occurring in winter, such as food shortage and cold weather, impact gut microbiota dynamics. The objective of this study was to characterize the gut microbiota of the honeybee during the overwintering period in a northern temperate climate in Canada. The microbiota of nine honeybee colonies was characterized by metataxonomy of 16S rDNA between September 2017 and June 2018. Overall, the results showed that microbiota taxonomic composition experienced major compositional shifts in fall and spring. From September to November, Enterobacteriaceae decreased, while Neisseriaceae increased. From April to June, Orbaceae increased, whereas Rhizobiaceae nearly disappeared. Bacterial diversity of the gut microbiota decreased drastically before and after overwintering, but it remained stable during winter. We conclude that the honeybee gut microbiota is likely to be impacted by the important meteorological and dietary changes that take place before and after the overwintering period. Laboratory trials are needed to determine how the observed variations affect the honeybee health.

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“…Significant changes in these bacterial taxa (Gammaproteobacteria, Betaproteobacteria) were detected in immune-suppressed adults emerging from Varroa -infested colonies [87]. Six Bacteroidetes bacterial taxa were detected as isthmus-associated, Bacteroides species are thought to play a vital role in the breakdown of polysaccharides into simpler compounds that related to host immunity [88].…”

Section: Site-associated Microorganisms In Chicken Digestive and Reprmentioning

confidence: 99%

Influence of the digestive/reproductive tract microbiota on chicken egg production beyond host genetics

Tian

Zhu

et al. 2020

Preprint

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Background: The microbiota of the digestive and reproductive systems has a prominent role in animal health and performance, but the extent of its contribution is difﬁcult to determine. In chickens, the effect of host genetics on the reproductive and digestive tract microbiota is unclear, and the means by which digestive/reproductive microbiomes help improve egg production in chicken are unknown.Results: To gain insight into this, we examined genomes from 128 chickens reared under identical conditions and described their digestive (crop, gizzard and small intestine) and reproductive tract (vagina, uterus and isthmus) microbiota. Although the diversity, composition and predicted function of the digestive and reproductive tract microbiota exhibited notable microbiota variation substantially between different parts, host genetics had limited effects on the reproductive and digestive tract microbial community. The digestive and reproductive tract microbiota had a significant effect on egg production (accounting for 52.31% - 98.86% of the variance), after correcting for host genetic effects; in particular, the uterus and isthmus microbiota accounted for an average of 93.59% and 98.86%, respectively, of variance in egg production. We further identiﬁed four reproductive tract microbial species which were related to immune system, Bacteroides fragilis, Bacteroides salanitronis, Bacteroides barnesiae and Clostridium leptum, that were signiﬁcantly positively correlated with egg production. Chickens with a lower abundance of these species had produced signiﬁcantly fewer eggs at 300 days of age (37.13 vs. 113.75) than those with a higher abundance of these microorganisms. These taxa indicate potential roles play in promoting reproductive performance. Especially uterus and isthmus tract microbiota were major factors in regulating the chicken egg production.Conclusions: Host genetics has limited effect on digestive/reproductive microbiome composition. The distinct site-associated chicken microbiome may be determined by the differences of their physical function. These ﬁndings may help design strategies for controlling and altering the digestive/reproductive tract microbiota in chickens to improve egg production.

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Quantitative variation in the core bacterial community associated with honey bees from Varroa-infested colonies

Cited by 21 publications

References 60 publications

Varroa destructor: how does it harm Apis mellifera honey bees and what can be done about it?

Varroa destructor: how does it harm Apis mellifera honey bees and what can be done about it?

Dynamics of the Honeybee (Apis mellifera) Gut Microbiota Throughout the Overwintering Period in Canada

Influence of the digestive/reproductive tract microbiota on chicken egg production beyond host genetics

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