Escape of the ctenophore Mnemiopsis leidyi from the scyphomedusa predator Chrysaora quinquecirrha

  title={Escape of the ctenophore Mnemiopsis leidyi from the scyphomedusa predator Chrysaora quinquecirrha},
  author={Timothy A. Kreps and Jennifer E. Purcell and Karla Heidelberg},
  journal={Marine Biology},
Abstract The ctenophore Mnemiopsis leidyi A. Agassiz, 1865 is known to be eaten by the scyphomedusan Chrysaora quinquecirrha (Desor, 1948), which can control populations of ctenophores in the tributaries of Chesapeake Bay. In the summer of 1995, we videotaped interactions in large aquaria in order to determine whether M. leidyi was always captured after contact with medusae. Surprisingly, M. leidyi escaped in 97.2% of 143 contacts. The ctenophores increased swimming speed by an average of 300… 

Invasive ctenophore Mnemiopsis leidyi in Limfjorden (Denmark) in late summer 2007 - assessment of abundance and predation effects.

The abundance of M. leidyi in Limfjorden in the late summer of 2007 is assessed and the predation effects of this ctenophore are given and the possible ecological consequences of the mass occurrence are discussed.

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Effects of climate on relative predation by scyphomedusae and ctenophores on copepods in Chesapeake Bay during 1987‐2000

Climate clearly affects gelatinous predator abundances, with consequences that cascade throughout the plankton food web, and the balance between medusae and ctenophores in Chesapeake Bay was greatly affected by climatic factors.

Predator-induced vertical behavior of a ctenophore

On average, M. leidyi responded to the predator’s presence by increasing variability in swimming speeds and by lowering their vertical distribution, which may help explain field records of vertical migration, as well as stratified and near-bottom distributions of M. leidyi.

Revision of the genus Chrysaora Peron & Lesueur, 1810 (Cnidaria: Scyphozoa)

The phylogenetic hypothesis indicates that the genus Chrysaora forms a monophyletic group, with C. achlyos having a basal position in the phylogeny.

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The native habitats of the ctenophore, Mnemiopsis, are temperate to subtropical estuaries along the Atlantic coast of North and South America, where it is found in an extremely wide range of



The feeding and growth of the sea nettle,Chrysaora quinquecirrha (Desor), in the laboratory

The sea nettle, Chrysaora quinquecirrha medusae, can capture ctenophore prey on its exumbrella, tentacles, and oral arms, where it becomes enveloped by the lip-like folds of the oral arms.

Swimming and feeding by the scyphomedusa Chrysaora quinquecirrha

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Differential Ingestion and Digestion of Bivalve Larvae by the Scyphozoan Chrysaora quinquecirrha and the Ctenophore Mnemiopsis leidyi.

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Effects of predation by the scyphomedusan Chrysaora quinquecirrha on zooplankton populations in Ches

The diet, digestion times, and d e n s ~ t ~ e s of Chrysaora quinquecirrha medusae, and densities of their prey were quantified in order to evaluate the importance of this conspicuous scyphomedusan

Meganyctiphanes norvegica (M. sars) (Euphausiacea) a voracious predator on Calanus, other copepods, and ctenophores, in oslofjorden, southern Norway

It is concluded that feeding activity of Meganyctiphanes was the cause for the occurrence in the samples of injured Calanus and other copepods, which had evidently been discarded or lost by the predators while in the net or immediately in front of it.

Potential Predation On Fish Eggs By The Lobate Ctenophore Mnemiopsis-Leidyi Within And Outside The Chesapeake Bay Plume

The observation that co-occurrence and potential predation are greatest in areas where Chesapeake Bay water mixes with coastal shelf water implies that those fishes that spawn in low-salinity surface waters of well-stratified water columns may afford protection of their eggs from ctenophore predation.

Predation by the ctenophoreMnemiopsis leidyi in Narragansett Bay, Rhode Island

The impact ofMnemiopsis leidyi as a predator was studied quantitatively to determine their feeding rates on mixed natural zooplankton. These studies showed that feeding rate was independent of food

Predation by gelatinous zooplankton and resource limitation as potential controls of Acartia tonsa copepod populations in Chesapeake Bay

It is concluded that A. tonsa populations arc not limited by gelatinous zooplankton predation and rarely by food, and that other predators (c.g. fish, adult copepods) and environmental limitations (e.g., temperature, hypoxic bottom waters) probably affect A.tonsa abundances in this region.

In situ observations of foraging, feeding, and escape behavior in three orders of oceanic ctenophores: Lobata, Cestida, and Beroida

The foraging, feeding, and escape behaviors of members of four genera of oceanic ctenophores were studied by direct observation in the field during the summer of 1987 (7 July to 7 September) on R. V.