一条小河流中鲑科鱼类白斑鲑鲑环境DNA的纵向分布。

IF 1.7 3区农林科学 Q2 FISHERIES

Journal of fish biology Pub Date : 2025-03-25 DOI:10.1111/jfb.70030

Shoichiro Yamamoto

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引用次数: 0

摘要

环境DNA （eDNA）分析对监测水生生态系统具有重要的前景。本研究采用传统电渔具和eDNA并行分析方法，研究了小流域白鲑（Salvelinus leucomaenis）的纵向分布、生物量和eDNA浓度之间的关系。在河流沿线每20 m位置上，白僵菌估算生物量与eDNA浓度或eDNA通量之间的关系没有一致的趋势，这使得白僵菌在河流中的空间分布难以估计。然而，整个研究区域的平均eDNA浓度与白僵菌总生物量的时间变化很好地对应，这表明使用eDNA进行多地点采样可以应用于估算溪流中白僵菌的相对生物量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Longitudinal distribution of environmental DNA of a salmonid fish, white-spotted charr Salvelinus leucomaenis, in a small stream.

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.

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来源期刊

Journal of fish biology 生物-海洋与淡水生物学

CiteScore

4.00

自引率

10.00%

发文量

292

审稿时长

3 months

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.