Marine Biology

, Volume 124, Issue 3, pp 399-406

First online:

Flow and feeding by swimming scyphomedusae

  • J. H. CostelloAffiliated withBiology Department, Providence College
  • , S. P. ColinAffiliated withBiology Department, Providence College

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The mechanical basis of prey capture by scyphomedusae has been largely ignored, despite the importance of these predators in a variety of planktonic ecosystems. Interactions between swimming, fluid motions, and prey capture were examined during 1991–1992 for a species from the three scyphozoan orders having planktonic medusae: Rhizostomeae, Stomolophus meleagris Agassiz, 1862; Coronatae, Linuche unguiculata (Schwartz, 1788); and Semaeostomeae, Cyanea capillata (Linnaeus, 1758). All three species used flow created during bell pulsation to capture prey, but the type of flow used for prey capture and the capture surface morphology were different for each species. The mechanics of capture by these species of diverse morphology and taxonomic affinity suggests that the use of bell pulsation-induced flow for prey entrainment and capture is widespread among the scyphomedusae.