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Title

NGS metabarcoding proves successful for quantitative assessment of symbiont abundance: the case of feather mites on birds

AuthorsDíaz-Real, Javier; Serrano, David ; Píriz, Ana ; Jovani, Roger
KeywordsCOI
High-throughput sequencing
mtDNA
NGS quantitative test
Pyrosequencing
Issue Date2015
PublisherSpringer
CitationExperimental and Applied Acarology, 67, Issue 2, pp 209-218 (2015)
AbstractProctophyllodes stylifer and Pteronyssoides parinus) under five proportions (16:1, 16:4, 16:16, 16:64, and 16:256 mites) against a mock community composed by Proctophyllodes clavatus and Proctophyllodes sylviae. In all mixtures, we retrieved sequence reads from all species. We found a strong linear relationship between 454 reads and the real proportion of individuals in the mixture for both focal species. The slope for Pr. stylifer was close to one (0.904), and the intercept close to zero (−0.007), thus showing an almost perfect correspondence between real and estimated proportions. The slope for Pt. parinus was 0.351 and the intercept 0.307, showing that while the estimated proportion increased linearly relative to real proportions of individuals in the samples, proportions were overestimated at low real proportions and underestimated at larger ones. Additionally, pyrosequencing replicates from each DNA extraction were highly repeatable (R = 0.920 and 0.972, respectively), showing that the quantification method is highly consistent given a DNA extract. Our study suggests that NGS is a promising tool for abundance estimation of feather mites’ communities in birds.
Publisher version (URL)http://dx.doi.org10.1007/s10493-015-9944-x
URIhttp://hdl.handle.net/10261/122441
DOI10.1007/s10493-015-9944-x
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