当前位置: X-MOL 学术Commun. Biol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Environmental DNA concentrations are correlated with regional biomass of Atlantic cod in oceanic waters.
Communications Biology ( IF 5.9 ) Pub Date : 2019-12-10 , DOI: 10.1038/s42003-019-0696-8
Ian Salter 1 , Mourits Joensen 1 , Regin Kristiansen 1 , Petur Steingrund 1 , Poul Vestergaard 1
Affiliation  

Environmental DNA (eDNA) has emerged as a powerful approach for studying marine fisheries and has the potential to negate some of the drawbacks of trawl surveys. However, successful applications in oceanic waters have to date been largely focused on qualitative descriptions of species inventories. Here we conducted a quantitative eDNA survey of Atlantic cod (Gadus morhua) in oceanic waters and compared it with results obtained from a standardized demersal trawl survey. Detection of eDNA originating from Atlantic cod was highly concordant (80%) with trawl catches. We observed significantly positive correlations between the regional integrals of Atlantic cod biomass (kg) and eDNA quantities (copies) (R2 = 0.79, P = 0.003) and between sampling effort-normalised Catch Per Unit Effort (kg hr-1) and eDNA concentrations (copies L-1) (R2 = 0.71, P = 0.008). These findings extend the potential application of environmental DNA to regional biomass assessments of commercially important fish stocks in the ocean.

中文翻译:

环境 DNA 浓度与大西洋水域中大西洋鳕鱼的区域生物量相关。

环境 DNA (eDNA) 已成为研究海洋渔业的有力方法,并有可能消除拖网调查的一些缺点。然而,迄今为止,在海洋水域的成功应用主要集中在物种清单的定性描述上。在这里,我们对海洋水域中的大西洋鳕鱼 (Gadus morhua) 进行了定量 eDNA 调查,并将其与标准化底层拖网调查获得的结果进行了比较。源自大西洋鳕鱼的 eDNA 检测与拖网渔获量高度一致 (80%)。我们观察到大西洋鳕鱼生物量(kg)和 eDNA 数量(拷贝)的区域积分之间存在显着正相关性(R2 = 0.79,P = 0.003),并且采样工作标准化每单位努力捕获量(kg hr-1)和 eDNA 浓度之间存在显着正相关性(副本 L-1)(R2 = 0.71,P = 0。008)。这些发现将环境 DNA 的潜在应用扩展到对海洋中具有重要商业价值的鱼类种群的区域生物量评估。
更新日期:2019-12-11
down
wechat
bug