Reproduction influences seasonal eDNA variation in a temperate marine fish community

Collins, RA ORCID:, Baillie, CJP, Halliday, NC, Rainbird, S, Sims, DW, Mariani, S and Genner, MJ 2022, Reproduction influences seasonal eDNA variation in a temperate marine fish community , John Wiley & Sons, Inc., Limnology And Oceanography Letters.

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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.

Item Type: Other
Schools: Schools > School of Environment and Life Sciences
Journal or Publication Title: Limnology and Oceanography Letters
Publisher: John Wiley & Sons, Inc.
ISSN: 2378-2242
Funders: Natural Environment Research Council, Natural Environment Research Council
SWORD Depositor: Publications Router
Depositing User: Publications Router
Date Deposited: 11 Aug 2022 08:40
Last Modified: 11 Aug 2022 08:40

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