Jellyfish on the menu: mtDNA assay reveals scyphozoan predation in the Irish Sea

Last modified: 
December 16, 2019 - 11:48am
Type: Journal Article
Year of publication: 2017
Date published: 11/2017
Authors: Philip Lamb, Ewan Hunter, John Pinnegar, Simon Creer, Richard Davies, Martin Taylor
Journal title: Royal Society Open Science
Volume: 4
Issue: 11
Pages: 171421

Localized outbreaks of jellyfish, known as blooms, cause a variety of adverse ecological and economic effects. However, fundamental aspects of their ecology remain unknown. Notably, there is scant information on the role jellyfish occupy in food webs: in many ecosystems, few or no predators are known. To identify jellyfish consumers in the Irish Sea, we conducted a molecular gut content assessment of 50 potential predators using cnidarian-specific mtDNA primers and sequencing. We show that jellyfish predation may be more common than previously acknowledged: uncovering many previously unknown jellyfish predators. A substantial proportion of herring and whiting were found to have consumed jellyfish. Rare ingestion was also detected in a variety of other species. Given the phenology of jellyfish in the region, we suggest that the predation was probably targeting juvenile stages of the jellyfish life cycle.

Freely available?: 
Yes
Summary available?: 
No