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https://hdl.handle.net/20.500.14094/90005517
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2025-04-27
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90005517 (fulltext)
pdf
2.27 MB
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メタデータID
90005517
アクセス権
open access
出版タイプ
Accepted Manuscript
タイトル
Environmental DNA analysis reveals the spatial distribution, abundance, and biomass of Japanese eels at the river‐basin scale
著者
Itakura, Hikaru ; Wakiya, Ryoshiro ; Yamamoto, Satoshi ; Kaifu, Kenzo ; Sato, Takuya ; Minamoto, Toshifumi
著者名
Itakura, Hikaru
著者名
Wakiya, Ryoshiro
著者名
Yamamoto, Satoshi
著者名
Kaifu, Kenzo
著者ID
A0446
研究者ID
1000030456743
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=b8fa658e995eea95520e17560c007669
著者名
Sato, Takuya
佐藤, 拓哉
サトウ, タクヤ
所属機関名
理学研究科
著者ID
A0574
研究者ID
1000050450656
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=481adea9a93d8196520e17560c007669
著者名
Minamoto, Toshifumi
源, 利文
ミナモト, トシフミ
所属機関名
人間発達環境学研究科
言語
English (英語)
収録物名
Aquatic Conservation : Marine and Freshwater Ecosystems
巻(号)
29(3)
ページ
361-373
出版者
Wiley
刊行日
2019-03
公開日
2020-04-01
注記
This is the peer reviewed version of the following article: Environmental DNA analysis reveals the spatial distribution, abundance, and biomass of Japanese eels at the river‐basin scale, which has been published in final form at https://doi.org/10.1002/aqc.3058. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
抄録
There is growing international concern about declines in populations of anguillid eels, resulting in their inclusion in the International Union for the Conservation of Nature (IUCN) Red List of Threatened Species. Monitoring the population dynamics of these species is often challenging, however, owing to their broad distributions and complex, catadromous life histories. Whether environmental DNA (eDNA) analysis could be used to monitor the spatial distribution of anguillid eels in rivers was investigated by conducting basin‐scale surveys of Japanese eels, Anguilla japonica Temminck & Schlegel, 1846, in 10 rivers in Japan, and comparing the results obtained using eDNA analysis with the results obtained using the electrofishing method. Moreover, the relationship between the eDNA concentration and the abundance and biomass of Japanese eels was examined. The eDNA of Japanese eels was detected at 56 (91.8%) of the 61 study sites from which individuals were collected by electrofishing, and at an additional 35 sites where individuals were not directly collected. This indicates that eDNA analysis has a greater sensitivity for detecting the presence of eels, making it a powerful tool for monitoring the spatial distribution of anguillid eels in rivers. A significant, but weak, positive relationship between the eDNA concentration and the abundance and biomass of Japanese eels was also found, suggesting that eDNA analysis may be useful for estimating the abundance and biomass of anguillid eels in rivers. This is the first study to demonstrate the potential usefulness of eDNA analysis for estimating the spatial distribution, abundance, and biomass of Japanese eels in rivers. eDNA analysis will allow anguillid eel populations to be monitored over large spatial and temporal scales using a consistent protocol, with reduced time and effort compared with conventional techniques, providing invaluable information for managing populations of these endangered species.
キーワード
abundancev
Anguilla japonica
anguillid eel
biomass
conservation
eDNA
endangered species
Japanese eel spatial distribution
カテゴリ
人間発達環境学研究科
理学研究科
学術雑誌論文
権利
© 2019 John Wiley & Sons, Ltd.
関連情報
DOI
https://doi.org/10.1002/aqc.3058
URI
https://www.kobe-u.ac.jp/research_at_kobe/NEWS/news/2019_03_01_01.html
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資源タイプ
journal article
ISSN
1052-7613
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eISSN
1099-0755
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NCID
AA10839194
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