Now being developed into a way to trace deep sea fisheries:
https://framsenteret.no/forum/2020/e-dna-using-dna-in-sea-water-to-trace-species/
One such tool which has undergone explosive development over the past few years is the analysis of environmental DNA (eDNA). Advances in genetics and genomics, which include a variety of technologies and tools, are now providing us with the ability to increase knowledge about existing data collections, fill data gaps in existing methodology, and in some cases possibly replace current methods in a cost-effective and sustainable way.
eDNA methodology has already shown significant potential for cost-effective mapping and monitoring of the composition of species communities, pathogens and harmful algae blooms, and the effects of aquaculture of shellfish on biodiversity, and is now also being used to determine population structure and species/population identification of marine mammals.
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