Environmental DNA preserved in marine sediment for detecting jellyfish blooms after a tsunami

Environmental DNA (eDNA) can be a powerful tool for detecting the distribution and abundance of target species. This study aimed to test the longevity of eDNA in marine sediment through a tank experiment and to use this information to reconstruct past faunal occurrence. In the tank experiment, juven...

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Bibliographic Details
Published in:Scientific reports 2021-08, Vol.11 (1), p.16830-14, Article 16830
Main Authors: Ogata, Mizuki, Masuda, Reiji, Harino, Hiroya, Sakata, Masayuki K., Hatakeyama, Makoto, Yokoyama, Katsuhide, Yamashita, Yoh, Minamoto, Toshifumi
Format: Article
Language:English
Subjects:
631/158/2452
704/172/169/895
704/829/826
Animals
Cnidaria
Cores
Deoxyribonucleic acid
DNA
DNA, Environmental - genetics
Environmental DNA
Environmental Monitoring - methods
Experiments
Fishes - genetics
Geographical distribution
Geologic Sediments
Humanities and Social Sciences
Marine sediments
multidisciplinary
Oil spills
Perciformes - genetics
Polycyclic aromatic hydrocarbons
Preservation, Biological - methods
Science
Science (multidisciplinary)
Scyphozoa - genetics
Sediment samplers
Sediments
Tsunamis
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Summary:Environmental DNA (eDNA) can be a powerful tool for detecting the distribution and abundance of target species. This study aimed to test the longevity of eDNA in marine sediment through a tank experiment and to use this information to reconstruct past faunal occurrence. In the tank experiment, juvenile jack mackerel ( Trachurus japonicus ) were kept in flow-through tanks with marine sediment for two weeks. Water and sediment samples from the tanks were collected after the removal of fish. In the field trial, sediment cores were collected in Moune Bay, northeast Japan, where unusual blooms of jellyfish ( Aurelia sp.) occurred after a tsunami. The samples were analyzed by layers to detect the eDNA of jellyfish. The tank experiment revealed that after fish were removed, eDNA was not present in the water the next day, or subsequently, whereas eDNA was detectable in the sediment for 12 months. In the sediment core samples, jellyfish eDNA was detected at high concentrations above the layer with the highest content of polycyclic aromatic hydrocarbons, reflecting tsunami-induced oil spills. Thus, marine sediment eDNA preserves a record of target species for at least one year and can be used to reconstruct past faunal occurrence.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-94286-2