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Evaluation of fish biodiversity in estuaries using environmental DNA metabarcoding

by Kume, Manabu , Miya, Masaki , Ahn, Hyojin , Kasai, Akihide , Terashima, Yuki , Ye, Feng , Kameyama, Satoshi , Yamashita, Yoh

in Aquatic ecosystems / Biodiversity / Biology / Biology and Life Sciences / Coastal zone / Coasts / Connectivity / Deoxyribonucleic acid / Distribution / DNA / DNA barcoding / Earth Sciences / Ecological effects / Ecology / Ecology and Environmental Sciences / Ecosystem biology / Endangered & extinct species / Endangered species / Environmental aspects / Environmental conditions / Environmental DNA / Environmental studies / Estuaries / Fish / Fisheries / Fishes / Genetic aspects / Methods / Natural history / Nutrient concentrations / Physical Sciences / Rare species / River mouth / Rivers / Species composition / Species diversity / Water analysis / Water sampling / Wildlife conservation

2020

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Evaluation of fish biodiversity in estuaries using environmental DNA metabarcoding

by Kume, Manabu , Miya, Masaki , Ahn, Hyojin , Kasai, Akihide , Terashima, Yuki , Ye, Feng , Kameyama, Satoshi , Yamashita, Yoh

2020

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Evaluation of fish biodiversity in estuaries using environmental DNA metabarcoding

by Kume, Manabu , Miya, Masaki , Ahn, Hyojin , Kasai, Akihide , Terashima, Yuki , Ye, Feng , Kameyama, Satoshi , Yamashita, Yoh

2020

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Journal Article

Evaluation of fish biodiversity in estuaries using environmental DNA metabarcoding

Kume, Manabu,

Miya, Masaki,

Ahn, Hyojin,

Kasai, Akihide,

Terashima, Yuki,

Ye, Feng,

Kameyama, Satoshi,

Yamashita, Yoh

2020

Overview

Biodiversity is an important parameter for the evaluation of the extant environmental conditions. Here, we used environmental DNA (eDNA) metabarcoding to investigate fish biodiversity in five different estuaries in Japan. Water samples for eDNA were collected from river mouths and adjacent coastal areas of two estuaries with high degrees of development (the Tama and Miya Rivers) and three estuaries with relatively low degrees of development (the Aka, Takatsu, and Sendai Rivers). A total of 182 fish species across 67 families were detected. Among them, 11 species occurred in all the rivers studied. Rare fishes including endangered species were successfully detected in rich natural rivers. Biodiversity was the highest in the Sendai River and lowest in the Tama River, reflecting the degree of human development along each river. Even though nutrient concentration was low in both the Aka and Sendai Rivers, the latter exhibited greater diversity, including many tropical or subtropical species, owing to its more southern location. Species composition detected by eDNA varied among rivers, reflecting the distribution and migration of fishes. Our results are in accordance with the ecology of each fish species and environmental conditions of each river.

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Publisher

Public Library of Science,Public Library of Science (PLoS)

Subject

Aquatic ecosystems

/ Biodiversity

/ Biology

/ Biology and Life Sciences

/ Coastal zone

/ Coasts

/ Connectivity