{"title":"Longitudinal distribution of environmental DNA of a salmonid fish, white-spotted charr Salvelinus leucomaenis, in a small stream","authors":"Shoichiro Yamamoto","doi":"10.1111/jfb.70030","DOIUrl":null,"url":null,"abstract":"<p>Environmental DNA (eDNA) analysis holds significant promise for monitoring aquatic ecosystems. This study examined the relationship between longitudinal distribution, biomass and eDNA concentrations of <i>Salvelinus leucomaenis</i> in a small stream using conventional electrofishing gear and eDNA analysis in parallel. No consistent trend in the relationship between estimated <i>S. leucomaenis</i> biomass and eDNA concentrations or eDNA fluxes at each 20-m site along the stream was observed, making it difficult to estimate the spatial distribution of <i>S. leucomaenis</i> in streams. However, mean eDNA concentrations across the study area corresponded well with temporal changes in total <i>S. leucomaenis</i> biomass, indicating that multisite sampling using eDNA can be applied to estimate the relative biomass of <i>S. leucomaenis</i> in streams.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":"107 1","pages":"275-281"},"PeriodicalIF":2.0000,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of fish biology","FirstCategoryId":"97","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jfb.70030","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"FISHERIES","Score":null,"Total":0}
引用次数: 0
Abstract
Environmental DNA (eDNA) analysis holds significant promise for monitoring aquatic ecosystems. This study examined the relationship between longitudinal distribution, biomass and eDNA concentrations of Salvelinus leucomaenis in a small stream using conventional electrofishing gear and eDNA analysis in parallel. No consistent trend in the relationship between estimated S. leucomaenis biomass and eDNA concentrations or eDNA fluxes at each 20-m site along the stream was observed, making it difficult to estimate the spatial distribution of S. leucomaenis in streams. However, mean eDNA concentrations across the study area corresponded well with temporal changes in total S. leucomaenis biomass, indicating that multisite sampling using eDNA can be applied to estimate the relative biomass of S. leucomaenis in streams.
期刊介绍：
The Journal of Fish Biology is a leading international journal for scientists engaged in all aspects of fishes and fisheries research, both fresh water and marine. The journal publishes high-quality papers relevant to the central theme of fish biology and aims to bring together under one cover an overall picture of the research in progress and to provide international communication among researchers in many disciplines with a common interest in the biology of fish.
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