Published February 12, 2021
| Version v1
Dataset
Open
Estuarine fishes associated with intertidal oyster reefs characterised using environmental DNA and baited remote underwater video
Description
It has been widely shown that oyster reefs enhance local biodiversity and fisheries production. Therefore, in this study fish assemblages from oyster reefs were compared to sandy habitats using environmental DNA (eDNA) metabarcoding and baited remote underwater video. Fish diversity from eDNA was characterised using three metabarcoding assays - two that target the mitochondrial 16S region and one that targets the 12S region. Fish assemblages differed with each assay, as well as to that detected by BRUVs. Overall, 112 fish genera were identified, with 78 more genera detected using eDNA metabarcoding than those observed with BRUVs. Both eDNA and BRUVs resolved a higher number of fish genera associated with oyster reefs than with sand sites, and a different fish composition between habitats was also resolved using each method. Furthermore, eDNA was shown to be useful towards characterising the gamma diversity of the estuary, due to the intertidal nature and hydrodynamics of the system, as well as the alpha diversity associated with oyster reefs and sand sites.
Notes
Fastq files (i.e. list of DNA barcode sequences) for each sample and metabarcoding assay are provided.
Files names indicate the habitat (e.g. osyter) where the sample was collected from, followed by the site number (e.g. 1), metabarcoding assay (e.g. 16SFish), the date of collection (e.g. Mar19), and finally the unique sample identifier (e.g. 89).
For example: Oyster1_16SFish_Mar19_89.
Additional controls (negative, extraction, filtration) are also indicated in sample names.
In the excel datasheet, MaxN data of fish detections using BRUVs were generated with Event Measure. Habitat and site names for BRUV samples are consistent with the eDNA file names.
Files
Files
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