Reproduction influences seasonal eDNA variation in a temperate marine fish community
Reproduction influences seasonal eDNA variation in a temperate marine fish community
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DOI：
10.1002/lol2.10271
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发表时间：
2022-08-03
影响因子：
7.8
通讯作者：
Genner, Martin J.
中科院分区：
文献类型：
--
作者：
Collins, Rupert A.;Baillie, Charles;Genner, Martin J.
许多因素影响环境DNA（eDNA）丰度在自然环境中的变化。对eDNA变异研究最少的贡献者之一是生殖。预计传播产卵的海洋生物会随着配子的释放和与繁殖相关的活动水平的提高而脱落更多的DNA。为了在群落水平上验证这一假设，我们提出了一个长达一年的eDNA时间序列的温带海陆架鱼类组合结合成鱼和鱼类浮游生物丰度数据。我们的研究结果表明，eDNA与物种丰度估计传统的鱼类调查在所有生命阶段（成人，幼虫，和鸡蛋），平均2.3倍更丰富的预测鱼类繁殖期。
Many factors influence how environmental DNA (eDNA) abundance varies in natural environments. One of the least studied contributors to eDNA variation is that of reproduction. Marine organisms that broadcast spawn are expected to shed increased quantities of DNA in association with the release of gametes and the elevated levels of activity associated with reproduction. To test this hypothesis at the community level, we present a year-long eDNA time-series of a temperate sea-shelf fish assemblage combined with adult fish and ichthyoplankton abundance data. Our results show that eDNA is associated with species abundance estimated by conventional fish surveys at all life stages (adult, larval, and egg), and was on average 2.3-fold more abundant during predicted fish reproductive periods.