Environmental DNA facilitates accurate, inexpensive, and multiyear population estimates of millions of anadromous fish

	Environmental DNA facilitates accurate, inexpensive, and multiyear population estimates of millions of anadromous fish
	Pochardt, M; Allen, JM; Hart, T; Miller, SDL; Yu, DW; Levi, T
	2020
发表期刊	MOLECULAR ECOLOGY RESOURCES
ISSN	1755-098X
卷号	20 期号:2 页码:457-467
摘要	Although environmental DNA shed from an organism is now widely used for species detection in a wide variety of contexts, mobilizing environmental DNA for management requires estimation of population size and trends in addition to assessing presence or absence. However, the efficacy of environmental-DNA-based indices of abundance for long-term population monitoring have not yet been assessed. Here we report on the relationship between six years of mark-recapture population estimates for eulachon (Thaleichthys pacificus) and eDNA rates which are calculated from the product of stream flow and DNA concentration. Eulachon are a culturally and biologically important anadromous fish that have significantly declined in the southern part of their range but were historically rendered into oil and traded. Both the peak eDNA rate and the area under the curve of the daily eDNA rate were highly predictive of the mark-recapture population estimate, explaining 84.96% and 92.53% of the deviance, respectively. Even in the absence of flow correction, the peak of the daily eDNA concentration explained an astonishing 89.53% while the area under the curve explained 90.74% of the deviance. These results support the use of eDNA to monitor eulachon population trends and represent a >80% cost savings over mark-recapture, which could be further increased with automated water sampling, reduced replication, and focused temporal sampling. Due to its logistical ease and affordability, eDNA sampling can facilitate monitoring a larger number of rivers and in remote locations where mark-recapture is infeasible.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kiz.ac.cn/handle/152453/12992
专题	科研部门_生态学与环境保护中心（俞维理）
推荐引用方式 GB/T 7714	Pochardt, M,Allen, JM,Hart, T,et al. Environmental DNA facilitates accurate, inexpensive, and multiyear population estimates of millions of anadromous fish[J]. MOLECULAR ECOLOGY RESOURCES,2020,20(2):457-467.
APA	Pochardt, M,Allen, JM,Hart, T,Miller, SDL,Yu, DW,&Levi, T.(2020).Environmental DNA facilitates accurate, inexpensive, and multiyear population estimates of millions of anadromous fish.MOLECULAR ECOLOGY RESOURCES,20(2),457-467.
MLA	Pochardt, M,et al."Environmental DNA facilitates accurate, inexpensive, and multiyear population estimates of millions of anadromous fish".MOLECULAR ECOLOGY RESOURCES 20.2(2020):457-467.

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2020101313.pdf（1125KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	请求全文