Journal article Open Access

Jellyfish stranding observations around the Isle of Anglesey in the Summer of 2014

IONESCU, Maria; WILSON, E. Stephanie; EVANS, J. Edward

Jellyfish populations have been multiplying in an explozive manner at global level during the last decades, with major social and economic implications. These phenomena have attracted the attention of the scientific community, translated in an ever increasing number of studies, which try to understand and quantify the mechanisms behind jellyfish development, growth and dynamics. The present study proposes a relatively easy to perform and cost effective study for the monitoring of jellyfish, that can be adapted also to the Black Sea coast. The work presented in this paper focuses on the spatial and temporal distribution of five Scyphozoan jellyfish that were present at beaches along of the Isle of Anglesey, North Wales, United Kingdom during the summer of 2014. Stranded jellies were surveyed for a period of 3 months, from June 2nd until August 29th. The Scyphozoan species that were encountered during beach surveys belong to the orders Rhizostomeae: Rhizostoma octopus and Semaeostomeae: Aurelia aurita, Chrysaora hysoscella, Cyanea lamarckii and Cyanea capillata. Their total abundance demonstrated a fluctuating pattern during summer but a clear seasonal effect was noticed for the studied species.

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  • Bamstedt, U., Ishii, H.,Martinussen, M. B. (1997). Is the scyphomedusa Cyanea capillata (L.) dependent on gelatinous prey for its early development?. Sarsia, 82, 269-273.
  • Barz, K., Hirche, H. J. (2005). Seasonal development of scyphozoan medusae and the predatory impact of Aurelia aurita on the zooplankton community in the Bornholm Basin (central Baltic Sea). Marine Biology, 147, 465-476.
  • Boero, F. (2013). Review of jellyfish blooms in the Mediterranean and the Black Sea. Studies and reviews, General Fisheries Commission for the Mediterranean, 92.
  • CIESM (Commission Internationale pour l'Exploration Scientifique de la mer Méditerranée) (2001) Gelatinous zooplankton outbreaks: theory and practice. CIESM Workshop Series, 14, Monaco.
  • Condon, R. H., Duarte, C. M., Pitt, K. A., Robinson, K. L., Lucas, C. F., Sutherland, K. R., Mianzan, H. W., Bogeberg, Purcell, J. E., Decker, M. B., Uye S., Madin, L. P., Brodeur, R. D., Haddock, S. H. D., Malej, A., Parry, G. D., Eriksen, E., Quiñones, J., Acha, M., Harvey, M., Arthur, J. M., Graham, W. M. (2012). Recurrent jellyfish blooms are a consequence of global oscillations, PNAS, 110, 3.
  • Doyle, T. K., De Haas, H., Cotton, D., Dorschel, B., Cummins, V., Houghton, J. D. R., Hays, G. C. (2008). Widespread occurrence of the jellyfish Pelagia noctiluca in Irish coastal and shelf waters. Journal of Plankton Research, 30, 963–968.
  • Doyle, T. K., Houghton, J. D. R., Buckley, S. M., Hays, G. C., & Davenport, J. (2006). The broad-scale distribution of five jellyfish species across a temperate coastal environment. Hydrobiologia, 579(1), 29–39.
  • Fleming, N. E. C., Harrod, C., Houghton, J. D. R. (2013). Identifying potentially harmful jellyfish blooms using shoreline surveys. Aquaculture Environment Interactions, 4, 263-272.
  • Flynn, B. A., Gibbons, M. J. (2007). A note on the diet and feeding of Chrysaora hysoscella in Walvis Bay Lagoon, Namibia, during September 2003. African Journal of Marine Science 2007, 29, 303–307.
  • Gröndahl, F. (1988). A comparative ecological study on the scyphozoans Aurelia aurita, Cyanea capillata and C.lamarckii in the Gullmat Fjord, western Sweden, 1982 to 1986. Marine Biology, 97, 541- 550.
  • Hansson, L. J., (1997). Capture and digestion of the scyphozoan jellyfish Aurelia aurita by Cyanea capillata and prey response to predator contact. Journal of Plankton Research, 19, 2, 195-208.
  • Houghton, J. D. R., Doyle, T. K., Davenport, J., Lilley, M. K. S., Wilson, R. P., & Hays, G. C. (2007). Stranding events provide indirect insights into the seasonality and persistence of jellyfish medusae (Cnidaria: Scyphozoa). Hydrobiologia, 589, 1–13.
  • Houghton, J., Doyle, T., Davenport, J., & Hays, G. (2006). Developing a simple, rapid method for identifying and monitoring jellyfish aggregations from the air. Marine Ecology Progress Series, 314, 159–170.
  • Kogovšek, T., Bogunović, B., Malej, A. (2010). Recurrence of bloom-forming scyphomedusae: wavelet analysis of a 200-year time series. Hydrobiologia, 645, 81-96.
  • Licandro, P., Conway, D. V. P., Daly Yahia, M. N., Fernandez de Puelles, M. L., Gasparini, S., Hecq, J. H., Kirby, R. R. (2010). A blooming jellyfish in the northeast Atlantic and Mediterranean. Biology Letters, 688–91.
  • Love, R. J. (unpublished data). Invasion of the Jellyfish: Measuring the Progression of Summer Jellyfish Populations in the Menai Strait, Anglesey, North Wales. Master Thesis, Bangor University, 2014.
  • Lynam, C. P., Hay, S. J., & Brierley, A. S. (2004). Interannual variability in abundance of North Sea jellyfish and links to the North Atlantic Oscillation. Limnology and Oceanography, 49, 637–643.
  • Lynam, C., Heath, M., Hay, S., & Brierley, A. (2005). Evidence for impacts by jellyfish on North Sea herring recruitment. Marine Ecology Progress Series, 298, 157–167.
  • Macer, C. T. (1967). The food web in Red Wharf Bay (North Wales) with particular reference to young plaice (Pleuronectes platessa). Helgoländer wissenschaftliche Meeresuntersuchungen, 15, 560- 573.
  • Mills, C. E. (2001). Jellyfish blooms: are populations increasing globally inresponse to changing ocean conditions?. Hydrobiologia 451, 55–68.
  • Pauly, D., Graham, W., Libralato, S., Morissette, L., & Deng Palomares, M. L. (2009). Jellyfish in ecosystems, online databases, and ecosystem models. Hydrobiologia, 616, 67–85.
  • Pikesley, S. K., Godley, B. J., Ranger, S., Richardson, P. B., Witt, M. J. (2014). Cnidaria in UK coastal waters: description of spatio-temporal patterns and inter-annual variability. Journal of the Marine Biological Association of the United Kingdom, 1-8.
  • Purcell, J. E., Arai, M. N. (2001). Interactions of pelagic cnidarians and ctenophore with fish: a review. Hydrobiologia, 451, 27-44.
  • Purcell, J., Uye, S., & Lo, W. (2007). Anthropogenic causes of jellyfish blooms and their direct consequences for humans: a review. Marine Ecology Progress Series, 350, 153–174.
  • Richardson, A. J., Bakun, A., Hays, G. C., Gibbons, M. J. (2009). The jellyfish joyride: causes, consequences and management responses to a more gelatinous future. Tends in Ecology and Evolution, 26, 6.
  • Russell, F.S. (1970) The Medusae of the British Isles. Vol.II - Pelagic Scyphozoa.
  • Sanz-Martin, M., Pitt, K.A., Condon, R.H., Lucas, C.H., Novaes de Santana, C., Duarte, C.M. (2016). Flawed citation practices facilitate the unsubstantiated perception of a global trend toward increased jellyfish blooms. Global Ecology and Biogeography.
  • Stanev E. V., Staneva, J.V., (2000) The impact of the baroclinic eddies and basin oscillations on the transitions between different quasi-stable states of the Black Sea circulation. Journal of Marine Systems, 24, 3-26
  • Stanica, A., Dan, S., Ungureanu, V.G. (2007). Coastal changes at the Sulina mouth of the Danube River as a result of human activities. Marine Pollution Bulletin, 55, 555-563
  • Uye, S., (2008). Blooms of the giant jellyfish Nemopilema nomurai: a threat to fisheries sustainability of East Asian Marginal Seas, Plankton Benthos Res 3 (Suppl.), 125–131.
  • Uye, S., Fujii, N., & Takeoka, H. (2003). Unusual aggregations of the scyphomedusa Aurelia aurita in coastal waters along western Shikoku, Japan, 50, 17–21.
  • Van der Veer, H. W., Oorthuysen, W. (1985). Abundance, growth and food demand of the scyphomedusa Aurelia aurita in the western Wadden Sea. Netherlands Journal of Sea Research, 19, 38-44.
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