Details:

Alternative Title:
Exp Appl Acarol
Personal Author:
Williams-Newkirk, Amanda Jo ; Rowe, Lori A. ; Mixson-Hayden, Tonya R. ; Dasch, Gregory A.
Williams-Newkirk, Amanda Jo ; Rowe, Lori A. ; Mixson-Hayden, Tonya R. ; Dasch, Gregory A. Less -
Description:
We used next generation sequencing to detect the bacterium "Candidatus Midichloria mitochondrii" for the first time in lone star ticks (Amblyomma americanum) from the eastern United States. 177 individuals and 11 tick pools from seven sites in four states were tested by pyrosequencing with barcoded 16S rRNA gene eubacterial primers targeting variable regions 5-3. Average infection prevalence was 0.15 across all surveyed populations (range 0-0.29) and only the site with the smallest sample size (n = 5) was negative. Three genotypes differing by 2.6-4.1 % in a 271 bp region of 16S rRNA gene were identified. Two variants co-occurred in sites in North Carolina and New York, but were not observed in the same tick at those sites. The third genotype was found only in Georgia. Phylogenetic analysis of this fragment indicated that the three variants are more closely related to "Candidatus Midichloria mitochondrii" genotypes from other tick species than to each other. This variation suggests that multiple independent introductions occurred in A. americanum which may provide insight into bacterial spread within its ecosystem and parasitism on this tick. Whether the presence of this bacterium affects acquisition or maintenance of other pathogens and symbionts in A. americanum or the survival, biology and evolution of the tick itself is unknown.
Subject:
[+]
16S RRNA
Alphaproteobacteria
Amblyomma Americanum
Animals
Article
Base Sequence
DNA, Bacterial
Genetic Variation
Ixodidae
Metagenomics
Midichloria Mitochondrii
Mitochondria
Molecular Sequence Data
Pathogenic Bacteria
Phylogeny
Rickettsiales
Sequence Alignment
Tick Control

Source:
Exp Appl Acarol. 58(3):291-300.
Pubmed ID:
22678102
Pubmed Central ID:
PMC5730336
Document Type:
Journal Article
Funding:
CC999999/Intramural CDC HHS/United States
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:2e4b12b7d95b8ebf6118c9fc525514907528c19e01121bc803847c961ed7feb2
File Type:

Supporting Files

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