FN Archimer Export Format
PT J
TI Metabarcoding is powerful yet still blind: a comparative analysis of morphological and molecular surveys of seagrass communities
BT 
AF COWART, Dominique A.
   PINHEIRO, Miguel
   MOUCHEL, Olivier
   MAGUER, Marion
   GRALL, Jacques
   MINE, Jacques
   ARNAUD-HAOND, Sophie
AS 1:1;2:2;3:1;4:3;5:3;6:4;7:1;
FF 1:PDG-REM-EEP-LEP;2:;3:;4:;5:;6:;7:PDG-REM-EEP-LEP;
C1 IFREMER, Unite Environm Profond, Dept Ressources Phys & Ecosyst Fond Mer REM, F-29280 Plouzane, France.
   Univ St Andrews, St Andrews KY16 9TF, Fife, Scotland.
   Inst Univ Europeen Mer, F-29280 Plouzane, France.
   Direct HSE, F-92078 Paris, France.
C2 IFREMER, FRANCE
   UNIV ST ANDREWS, UK
   UBO, FRANCE
   DIRECT HSE, FRANCE
SI BREST
SE PDG-REM-EEP-LEP
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-france
   copubli-europe
   copubli-univ-france
IF 3.057
TC 150
UR https://archimer.ifremer.fr/doc/00255/36596/35164.pdf
LA English
DT Article
AB In the context of the sixth wave of extinction, reliable surveys of biodiversity are increasingly needed to infer the cause and consequences of species and community declines, identify early warning indicators of tipping points, and provide reliable impact assessments before engaging in activities with potential environmental hazards. DNA metabarcoding has emerged as having potential to provide speedy assessment of community structure from environmental samples. Here we tested the reliability of metabarcoding by comparing morphological and molecular inventories of invertebrate communities associated with sea-grasses through estimates of alpha and beta diversity, as well as the identification of the most abundant taxa. Sediment samples were collected from six Zostera marina seagrass meadows across Brittany, France. Metabarcoding surveys were performed using both mitochondrial (Cytochrome Oxidase I) and nuclear (small subunit 18S ribosomal RNA) markers, and compared to morphological inventories compiled by a long-term benthic monitoring network. A sampling strategy was defined to enhance performance and accuracy of results by preventing the dominance of larger animals, boosting statistical support through replicates, and using two genes to compensate for taxonomic biases. Molecular barcodes proved powerful by revealing a remarkable level of diversity that vastly exceeded the morphological survey, while both surveys identified congruent differentiation of the meadows. However, despite the addition of individual barcodes of common species into taxonomic reference databases, the retrieval of only 36% of these species suggest that the remaining were either not present in the molecular samples or not detected by the molecular screening. This finding exemplifies the necessity of comprehensive and well-curated taxonomic reference libraries and multi-gene surveys. Overall, results offer methodological guidelines and support for metabarcoding as a powerful and repeatable method of characterizing communities, while also presenting suggestions for improvement, including implementation of pilotstudies prior to performing full "blind" metabarcoding assessments to optimize sampling and amplification protocols.
PY 2015
PD FEB
SO Plos One
SN 1932-6203
PU Public Library Science
VL 10
IS 2
UT 000349493000019
BP 1
EP 26
DI 10.1371/journal.pone.0117562
ID 36596
ER

EF