Mosquito Microbiome Dynamics, a Background for Prevalence and Seasonality of West Nile Virus

DSpace/Manakin Repository

Mosquito Microbiome Dynamics, a Background for Prevalence and Seasonality of West Nile Virus

Citable link to this page

 

 
Title: Mosquito Microbiome Dynamics, a Background for Prevalence and Seasonality of West Nile Virus
Author: Novakova, Eva; Woodhams, Douglas C.; Rodríguez-Ruano, Sonia M.; Brucker, Robert M.; Leff, Jonathan W.; Maharaj, Amin; Amir, Amnon; Knight, Rob; Scott, James

Note: Order does not necessarily reflect citation order of authors.

Citation: Novakova, Eva, Douglas C. Woodhams, Sonia M. Rodríguez-Ruano, Robert M. Brucker, Jonathan W. Leff, Amin Maharaj, Amnon Amir, Rob Knight, and James Scott. 2017. “Mosquito Microbiome Dynamics, a Background for Prevalence and Seasonality of West Nile Virus.” Frontiers in Microbiology 8 (1): 526. doi:10.3389/fmicb.2017.00526. http://dx.doi.org/10.3389/fmicb.2017.00526.
Full Text & Related Files:
Abstract: Symbiotic microbial communities augment host phenotype, including defense against pathogen carriage and infection. We sampled the microbial communities in 11 adult mosquito host species from six regions in southern Ontario, Canada over 3 years. Of the factors examined, we found that mosquito species was the largest driver of the microbiota, with remarkable phylosymbiosis between host and microbiota. Seasonal shifts of the microbiome were consistently repeated over the 3-year period, while region had little impact. Both host species and seasonal shifts in microbiota were associated with patterns of West Nile virus (WNV) in these mosquitoes. The highest prevalence of WNV, with a seasonal spike each year in August, was in the Culex pipiens/restuans complex, and high WNV prevalence followed a decrease in relative abundance of Wolbachia in this species. Indeed, mean temperature, but not precipitation, was significantly correlated with Wolbachia abundance. This suggests that at higher temperatures Wolbachia abundance is reduced leading to greater susceptibility to WNV in the subsequent generation of C. pipiens/restuans hosts. Different mosquito genera harbored significantly different bacterial communities, and presence or abundance of Wolbachia was primarily associated with these differences. We identified several operational taxonomic units (OTUs) of Wolbachia that drive overall microbial community differentiation among mosquito taxa, locations and timepoints. Distinct Wolbachia OTUs were consistently found to dominate microbiomes of Cx. pipiens/restuans, and of Coquilletidia perturbans. Seasonal fluctuations of several other microbial taxa included Bacillus cereus, Enterococcus, Methylobacterium, Asaia, Pantoea, Acinetobacter johnsonii, Pseudomonas, and Mycoplasma. This suggests that microbiota may explain some of the variation in vector competence previously attributed to local environmental processes, especially because Wolbachia is known to affect carriage of viral pathogens.
Published Version: doi:10.3389/fmicb.2017.00526
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5378795/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:32630681
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)

 
 

Search DASH


Advanced Search
 
 

Submitters