Details

Autor(en) / Beteiligte

• Shelton, Andrew Olaf
• Ramón-Laca, Ana
• Wells, Abigail
• Clemons, Julia
• Chu, Dezhang
• Feist, Blake E
• Kelly, Ryan P
• Parker-Stetter, Sandra L
• Thomas, Rebecca
• Nichols, Krista M
• Park, Linda

Titel

Environmental DNA provides quantitative estimates of Pacific hake abundance and distribution in the open ocean

Ist Teil von

• Proceedings of the Royal Society. B, Biological sciences, 2022-03, Vol.289 (1971), p.20212613-20212613

Ort / Verlag

England: The Royal Society

Erscheinungsjahr

2022

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• All species inevitably leave genetic traces in their environments, and the resulting environmental DNA (eDNA) reflects the species present in a given habitat. It remains unclear whether eDNA signals can provide quantitative metrics of abundance on which human livelihoods or conservation successes depend. Here, we report the results of a large eDNA ocean survey (spanning 86 000 km to depths of 500 m) to understand the abundance and distribution of Pacific hake ( ), the target of the largest finfish fishery along the west coast of the USA. We sampled eDNA in parallel with a traditional acoustic-trawl survey to assess the value of eDNA surveys at a scale relevant to fisheries management. Despite local differences, the two methods yield comparable information about the broad-scale spatial distribution and abundance. Furthermore, we find depth and spatial patterns of eDNA closely correspond to acoustic-trawl estimates for hake. We demonstrate the power and efficacy of eDNA sampling for estimating abundance and distribution and move the analysis eDNA data beyond sample-to-sample comparisons to management relevant scales. We posit that eDNA methods are capable of providing general quantitative applications that will prove especially valuable in data- or resource-limited contexts.