Proceedings V. Pelagic coelenterates


, Volume 216, Issue 1, pp 335-342

First online:

A review of cnidarians and ctenophores feeding on competitors in the plankton

  • Jennifer E. PurcellAffiliated withHorn Point Environmental Laboratory

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Predation among pelagic cnidarians and ctenophores is reviewed. The diets of semaeostome scyphomedusae and hydromedusae commonly include other gelatinous zooplanktivores. However, few species of siphonophores and ctenophores are known to consume other gelatinous species. Most of these species can be said to exhibit intraguild predation, since they consume species that potentially compete with them for food. In addition, some hydromedusan and ctenophore species may consume other gelatinous zooplanktivores exclusively. Characteristics of cnidarians and ctenophores as predators and as prey of other gelatinous species are discussed.

Key words

scyphomedusae hydromedusae siphonophores ctenophores predation competition