April 1, 2022 — Scientists with the National Marine Fisheries Service and University of Alaska have shown how an innovative DNA technology can be used to document the fish species that use Southeast Alaska’s nearshore waters.
For all its rich fisheries, Alaska’s geography, diverse coastal habitats and dynamic sea conditions make it challenging to study them using traditional sampling gear.
The scientists recently demonstrated that environmental DNA (eDNA) metabarcoding can characterize nearshore fish communities in different marine habitats and tidal conditions in Southeast Alaska. The researchers’ organizations included the Alaska Fisheries Science Center’s Auke Bay Laboratories; University of Alaska Fairbanks’ College of Fisheries and Ocean Sciences; and the NMFS Alaska Regional Office’s Habitat Conservation Division.
“Environmental or eDNA can revolutionize how we assess nearshore fish communities in Alaska,” said Wes Larson, manager of the NMFS Alaska science center’s genetics program, in a narrative of the project released this week by NMFS.
“Traditionally, the only way to sample nearshore fish communities is by using beach seines or similar gear types set from either shore or small boats,” said Larson. “Now we have another technique for generating similar data sets analyzing a simple water sample with eDNA metabarcoding.”