Journal
FRONTIERS IN ECOLOGY AND EVOLUTION
Volume 9, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fevo.2021.623831
Keywords
environmental DNA; polymerase chain reaction; degradation rate; quantile model; meta-analysis
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Funding
- Environment Research and Technology Development Fund [JPMEERF20204004]
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Environmental DNA (eDNA) analysis is an effective method for detecting aquatic organisms, including rare and endangered species. Factors such as water temperature and amplicon length significantly affect the degradation rate of eDNA.
Environmental DNA (eDNA) analysis can detect aquatic organisms, including rare and endangered species, in a variety of habitats. Degradation can influence eDNA persistence, impacting eDNA-based species distribution and occurrence results. Previous studies have investigated degradation rates and associated contributing factors. It is important to integrate data from across these studies to better understand and synthesize eDNA degradation in various environments. We complied the eDNA degradation rates and related factors, especially water temperature and amplicon lengths of the measured DNA from 28 studies, and subjected the data to a meta-analysis. In agreement with previous studies, our results suggest that water temperature and amplicon length are significantly related to the eDNA degradation rate. From the 95% quantile model simulation, we predicted the maximum eDNA degradation rate in various combinations of water temperature and amplicon length. Predicting eDNA degradation could be important for evaluating species distribution and inducing innovation (e.g., sampling, extraction, and analysis) of eDNA methods, especially for rare and endangered species with small population size.
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