eDNA metabarcoding for deep-sea fishes detection

eDNA metabarcoding for deep-sea fishes detection

November 10, 2020
Science

Scientists from St. John’s published a new study in the PLOS ONE journal using samples obtained from the CCGS Amundsen. They analyzed environmental DNA to monitor deep-sea fish diversity in the Labrador Sea. This technique called eDNA metabarcoding might help scientists for implementing sustainable management efforts as well as understanding the impacts of commercial fishing and climate change.

Dr. Mehrdad Hajibabaei comments:

“Characterizing biodiversity is key for ecological and environmental investigations. In this study we used environmental DNA from seawater samples to identify various fish species living in one of the most challenging and understudied ecosystems, deep waters of the north Atlantic in the Labrador sea. We were able to optimize and demonstrate the utility of eDNA analysis by comparing our results with a combination of conventional tools such as trawling, baited camera traps and hydroacoustic analysis. This study was possible largely due to an excellent collaborative framework especially access to DFO’s expertise and CCGS Amundsen’s capabilities for sampling in this remote and challenging waters.”

Full paper: Harnessing the power of eDNA metabarcoding for the detection of deep-sea fishes

To read more: DNA in seawater can reveal fish diversity in the deep ocean