Evaluating an Autonomous eDNA Sampler for Marine Environmental Monitoring: Short- and Long-Term Applications

Description

We evaluated an autonomous environmental DNA sampler produced by Dartmouth Ocean Technologies Inc (Dartmouth, Canada) compared to time-at-sample filtration in the laboratory to determine the performance of moored samplers for monitoring in the marine world. We deployed three autonomous samplers from DOT in the Bedford Basin (Canada) over a nine-week period in summer/fall 2023. The samplers filtered seawater in situ at programmed interviews over this time period, and we collected contemporaneous samples with a standard vacuum pump during each sampling period. Both eDNA sample types captured similar fish diversity, including typical diversity for the Northwest Atlantic. The invertebrate community detected using the COI marker was different between each sample type, likely due to differences in filter pore size. We found biofouling on the moored samplers was minimal over the study period, even in a high-traffic area such as the Bedford Basin, likely due to the relatively short experimental period, and copper screening covering in the inlet and outlet valves of the instruments. Overall, our results show promise to deploy autonomous eDNA samplers in marine conservation areas to contribute to monitoring in the temperate ocean, but further testing over longer periods of time is needed to determine if DNA remains well-preserved in the autonomous samplers at ambient ocean temperatures. Cite this data as: Jeffery, N.W., Van Wyngaarden, M., and Stanley, R.R.E. Evaluating an Autonomous eDNA Sampler for Marine Environmental Monitoring: Short- and Long-Term Applications. Published: December 2024. Coastal Ecosystems Science Division, Maritimes Region, Fisheries and Oceans Canada, Dartmouth NS.

Resources

Name Format Description Link
12S-ASV DNA sequences ZIP https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/436d5c50-8da6-483f-9705-91ecd6dc5c56/attachments/12S-ASV-dna-sequences.fasta
12S taxonomy CSV https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/436d5c50-8da6-483f-9705-91ecd6dc5c56/attachments/12S_Taxonomy.csv
COI-ASV DNA sequences ZIP https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/436d5c50-8da6-483f-9705-91ecd6dc5c56/attachments/COI-ASV-dna-sequences.fasta
Data dictionary CSV https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/436d5c50-8da6-483f-9705-91ecd6dc5c56/attachments/Data_dictionary.csv
DOTCOI taxonomy CSV https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/436d5c50-8da6-483f-9705-91ecd6dc5c56/attachments/DOTCOI_Taxonomy.csv
Samples from DOT sampler and SmithRoot Unknown https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/436d5c50-8da6-483f-9705-91ecd6dc5c56/attachments/Evaluating%20an%20Autonomous%20eDNA%20Sampler.gdb.zip
Samples from DOT sampler and SmithRoot CSV https://api-proxy.edh-cde.dfo-mpo.gc.ca/catalogue/records/436d5c50-8da6-483f-9705-91ecd6dc5c56/attachments/Samples_DOTSampler_SmithRoot.csv
Evaluating an Autonomous eDNA Sampler for Marine Environmental Monitoring: Short- and Long-Term Applications Ersi REST https://egisp.dfo-mpo.gc.ca/arcgis/rest/services/open_data_donnees_ouvertes/evaluating_edna_sampler_marine_monitoring/MapServer
Evaluating an Autonomous eDNA Sampler for Marine Environmental Monitoring: Short- and Long-Term Applications Ersi REST https://egisp.dfo-mpo.gc.ca/arcgis/rest/services/open_data_donnees_ouvertes/evaluating_edna_sampler_marine_monitoring/MapServer
Raw DNA sequences HTML https://www.ncbi.nlm.nih.gov/bioproject/PRJNA1139183

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