期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 56, 期 15, 页码 10798-10807出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.2c02506
关键词
eDNA enrichment; extracellular DNA; giant salamander; fish eDNA; passive eDNA sampler; quantitative PCR
资金
- Special Project for Social Development of Yunnan Province [202103AC100001]
- Qidong-SLS Innovation Fund [2022001638]
- Second Tibetan Plateau Scientific Expedition and Research Program [2019QZKK0503, 2019QZKK0304]
- National Science and Technology Basic Resources Survey Program of China [2019FY101700]
The study evaluates the performance of different types of sorbents and filter membranes for capturing eDNA in aquatic environments. Glass fiber filters (GF) were found to be the most effective in both laboratory and field experiments, capturing a high quantity of amphibian and fish eDNA within a short time.
Environmental DNA (eDNA) technology has revolutionized biomonitoring in recent years; however, eDNA collection from aquatic environments generally relies on the timeconsuming and equipment-dependent process of water filtration. Passive eDNA sampling deploys sorbent materials to capture eDNA from water, circumventing many problems associated with active filtration; yet, very few candidate materials have been systematically evaluated for this purpose. Here, we evaluated the ability of 12 different types of common loose sorbents and filter membranes to capture eDNA in laboratory and field experiments compared with conventional water filtration. Glass fiber filters (GF) outperformed all other materials in laboratory experiments with respect to their quantitative capacity to recover amphibian eDNA, with the eDNA yield increasing linearly with submersion time up to 72 h. Furthermore, GF rapidly (within 0.5 h) captured the eDNA of up to 71% of the total fish species in a lake, in addition to detecting the entire fish community by 8 h, as assessed by metabarcoding analysis. Our results demonstrate that GF could passively capture aqueous eDNA with a similar or greater efficiency than conventional methods, thus paving the way for convenient, effective, and eco-friendly eDNA sampling in aquatic environments.
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