Environmental DNA

Environmental DNA (eDNA) is DNA that an organism leaves behind as it moves through an environment. Generally, eDNA follows a pattern of exponential decay over time. The fish above leaves its eDNA behind as it moves through the aquatic environment. The eDNA stays behind in the environment, and slowly dissipates over time.

Environmental DNA or eDNA is DNA that is collected from a variety of environmental samples such as soil , seawater, or even air. [1] rather than from an individual organism. Feces, mucus, gametes, shed skin, carcasses and hair are all sources of eDNA. [2] Such samples can be analyzed by high-throughput DNA sequencing methods for rapid measurement and monitoring of biodiversity. The analysis of such samples is called metagenomics.

See also

References

  1. ↑ Ficetola, Gentile Francesco; Miaud, Claude; Pompanon, François; Taberlet, Pierre (2008). "Species detection using environmental DNA from water samples". Biology Letters. 4 (4): 423–425. doi:10.1098/rsbl.2008.0118. ISSN 1744-9561. PMID 18400683.
  2. ↑ "What is eDNA?". Freshwater Habitats Trust.
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