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.
- gut content analysis
- 16S mtDNA
- School of Biological Sciences - Associate Professor in Molecular Ecology
- Collaborative Centre for Sustainable Use of the Seas - Member
- Organisms and the Environment - Member
Person: Research Group Member, Academic, Teaching & Research
Supplementary material from "Jellyfish on the menu: mtDNA assay reveals scyphozoan predation in the Irish Sea"