Reproduction influences seasonal eDNA variation in a temperate marine fish community

Collins, RA; Baillie, C; Halliday, NC; Rainbird, S; Sims, DW; Mariani, S; Genner, MJ. 2022 Reproduction influences seasonal eDNA variation in a temperate marine fish community. Limnology and Oceanography Letters. https://doi.org/10.1002/lol2.10271

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Abstract/Summary

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: Publication - Article
Additional Keywords: Environmental DNA, Reproduction Influences, Temperate Marine Fish Community, Fish Reproductive Periods, Fish Surveys
Subjects: Aquaculture
Biology
Ecology and Environment
Marine Sciences
Divisions: Marine Biological Association of the UK > Knowledge Exchange
Depositing User: Tamar Atkinson
Date made live: 01 Sep 2022 11:05
Last Modified: 01 Sep 2022 11:05
URI: http://plymsea.ac.uk/id/eprint/9781

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