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Direct evidence of an efficient energy transfer pathway from jellyfish carcasses to a commercially important deep-water species
Dunlop, K.M.; Jones, D.O.B.; Sweetman, A.K. (2017). Direct evidence of an efficient energy transfer pathway from jellyfish carcasses to a commercially important deep-water species. NPG Scientific Reports 7(1): 4 pp. https://hdl.handle.net/10.1038/s41598-017-17557-x
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322, more
Peer reviewed article  

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  • Dunlop, K.M.
  • Jones, D.O.B.
  • Sweetman, A.K.

Abstract
    Here we provide empirical evidence of the presence of an energetic pathway between jellyfish and a commercially important invertebrate species. Evidence of scavenging on jellyfish carcasses by the Norway lobster (Nephrops norvegicus) was captured during two deployments of an underwater camera system to 250–287 m depth in Sognefjorden, western Norway. The camera system was baited with two Periphylla periphylla (Scyphozoa) carcasses to simulate the transport of jellyfish detritus to the seafloor, hereby known as jelly-falls. N. norveigus rapidly located and consumed a large proportion (>50%) of the bait. We estimate that the energy input from jelly-falls may represent a significant contribution to N. norvegicus energy demand (0.21 to 10.7 times the energy required for the population of N. norvegicus in Sognefjorden). This potentially high energetic contribution from jelly-falls highlights a possible role of gelatinous material in the support of commercial fisheries. Such an energetic pathway between jelly-falls and N. norvegicus could become more important with increases in jellyfish blooms in some regions.

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