Researchers in Maizuru Bay (IMAGE) Kobe University Caption The researchers collected 1-liter samples of surface water and bottom water from 47 locations in Maizuru bay, and analyzed the environmental DNA of Japanese jack mackerel using real-time PCR. The red parts of the image show the highest concentrations of DNA. When they compared the distribution of DNA to the results for fish distribution calculated using fish finders, their findings proved that environmental DNA can be used to quantitatively estimate the distribution of Japanese jack mackerel. Credit Kobe University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.