Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1023012
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dc.contributor.authorPAULA, D. P.
dc.contributor.authorLINARD, B.
dc.contributor.authorANDOW, D. A.
dc.contributor.authorSUJII, E. R.
dc.contributor.authorPIRES, C. S. S.
dc.contributor.authorVOGLER, A. P.
dc.date.accessioned2018-07-17T00:52:22Z-
dc.date.available2018-07-17T00:52:22Z-
dc.date.created2015-08-31
dc.date.issued2015
dc.identifier.citationMolecular Ecology Resources, v. 15, n. 4, p. 880-892, 2015.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1023012-
dc.descriptionDNA methods are useful to identify ingested prey items from the gut of predators, but reliable detection is hampered by low amounts of degraded DNA. PCR-based methods can retrieve minute amounts of starting material but suffer from amplification biases and cross-reactions with the predator and related species genomes. Here, we use PCR-free direct shotgun sequencing of total DNA isolated from the gut of the harlequin ladybird Harmonia axyridis at five time points after feeding on a single pea aphid Acyrthosiphon pisum. Sequence reads were matched to three reference databases: Insecta mitogenomes of 587 species, including H. axyridis sequenced here; A. pisum nuclear genome scaffolds; and scaffolds and complete genomes of 13 potential bacterial symbionts. Immediately after feeding, multicopy mtDNA of A. pisum was detected in tens of reads, while hundreds of matches to nuclear scaffolds were detected. Aphid nuclear DNA and mtDNA decayed at similar rates (0.281 and 0.11 h1 respectively), and the detectability periods were 32.7 and 23.1 h. Metagenomic sequencing also revealed thousands of reads of the obligate Buchnera aphidicola and facultative Regiella insecticola aphid symbionts, which showed exponential decay rates significantly faster than aphid DNA (0.694 and 0.80 h 1, respectively). However, the facultative aphid symbionts Hamiltonella defensa, Arsenophonus spp. and Serratia symbiotica showed an unexpected temporary increase in population size by 1?2 orders of magnitude in the predator guts before declining. Metagenomics is a powerful tool that can reveal complex relationships and the dynamics of interactions among predators, prey and their symbionts.
dc.languageen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectCoccinellid
dc.subjectAnalyte detectability half-life
dc.titleDetection and decay rates of prey and prey symbionts in the gut of a predator through metagenomics.
dc.typeSeparatas
dc.date.updated2018-07-17T00:52:22Zpt_BR
dc.subject.thesagroPulgão
dc.identifier.doi10.1111/1755-0998.12364
dc.contributor.institutionDEBORA PIRES PAULA, CENARGEN; BENJAMIN LINARD, Department of Life Sciences, Natural History Museum, Cromwell Rd, London; DAVID A. ANDOW, Department of Entomology, University of Minnesota; EDISON RYOITI SUJII, CENARGEN; CARMEN SILVIA SOARES PIRES, CENARGEN; ALFRIED P. VOGLER, Department of Life Sciences, Natural History Museum, Cromwell Rd, London.
Appears in Collections:Artigo em periódico indexado (CENARGEN)

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