| Title: | Environmental DNA as a ‘Snapshot’ of Fish Distribution: A Case Study of Japanese Jack Mackerel in Maizuru Bay, Sea of Japan |
| Authors: | Yamamoto, Satoshi Browse this author |
| Minami, Kenji Browse this author |
| Fukaya, Keiichi Browse this author |
| Takahashi, Kohji Browse this author |
| Sawada, Hideki Browse this author |
| Murakami, Hiroaki Browse this author |
| Tsuji, Satsuki Browse this author |
| Hashizume, Hiroki Browse this author |
| Kubonaga, Shou Browse this author |
| Horiuchi, Tomoya Browse this author |
| Hongo, Masamichi Browse this author |
| Nishida, Jo Browse this author |
| Okugawa, Yuta Browse this author |
| Fujiwara, Ayaka Browse this author |
| Fukuda, Miho Browse this author |
| Hidaka, Shunsuke Browse this author |
| Suzuki, Keita W. Browse this author |
| Miya, Masaki Browse this author |
| Araki, Hitoshi Browse this author →KAKEN DB |
| Yamanaka, Hiroki Browse this author |
| Maruyama, Atsushi Browse this author |
| Miyashita, Kazushi Browse this author |
| Masuda, Reiji Browse this author |
| Minamoto, Toshifumi Browse this author |
| Kondoh, Michio Browse this author |
| Issue Date: | 2-Mar-2016 |
| Publisher: | Public Library of Science |
| Journal Title: | PLoS One |
| Volume: | 11 |
| Issue: | 3 |
| Start Page: | 0149786 |
| Publisher DOI: | 10.1371/journal.pone.0149786 |
| Abstract: | Recent studies in streams and ponds have demonstrated that the distribution and biomass of aquatic organisms can be estimated by detection and quantification of environmental DNA (eDNA). In more open systems such as seas, it is not evident whether eDNA can represent the distribution and biomass of aquatic organisms because various environmental factors (e.g., water flow) are expected to affect eDNA distribution and concentration. To test the relationships between the distribution of fish and eDNA, we conducted a grid survey in Maizuru Bay, Sea of Japan, and sampled surface and bottom waters while monitoring biomass of the Japanese jack mackerel (Trachurus japonicus) using echo sounder technology. A linear model showed a high R2 value (0.665) without outlier data points, and the association between estimated eDNA concentrations from the surface water samples and echo intensity was significantly positive, suggesting that the estimated spatial variation in eDNA concentration can reflect the local biomass of the jack mackerel. We also found that a bestfit model included echo intensity obtained within 10–150 m from water sampling sites, indicating that the estimated eDNA concentration most likely reflects fish biomass within 150 min the bay. Although eDNA from a wholesale fish market partially affected eDNA concentration, we conclude that eDNA generally provides a ‘snapshot’ of fish distribution and biomass in a large area. Further studies in which dynamics of eDNA under field conditions (e.g., patterns of release, degradation, and diffusion of eDNA) are taken into account will provide a better estimate of fish distribution and biomass based on eDNA. |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/64498 |
| Appears in Collections: | 農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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