Predation by the scyphomedusan Chrysaora quinquecirrha on Mnemiopsis leidyi ctenophores
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چکیده
منابع مشابه
Escape of the ctenophore Mnemiopsis leidyi from the scyphomedusa predator Chrysaora quinquecirrha
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 esca...
متن کاملGrowth and reproduction of gelatinous zooplankton exposed to low dissolved oxygen
The lobate ctenophore Mnemiopsis leidyi and the scyphomedusan jellyfish Chrysaora quinquecirrha are seasonally important consumers in the food web of Western Atlantic and Gulf of Mexico estuaries, including Chesapeake Bay. The abundance and importance of these gelatinous species may be increasing as a result of anthropogenic alteration of these systems, particularly the increasing severity and ...
متن کاملFine-scale vertical distributions of Mnemiopsis leidyi ctenophores: predation on copepods relative to stratification and hypoxia
Plankton concentrations near discontinuities in the water column (clines) are be lieved to be important for intensifying trophic interactions; however, evidence for increased feeding by predators at clines in situ is scarce. Here we demonstrate enhanced feeding near pycnoclines by a voracious planktivore, the ctenophore Mnemiopsis leidyi. To determine their feeding relative to stratification, w...
متن کاملPredator-mediated landscape structure: seasonal patterns of spatial expansion and prey control by Chrysaora quinquecirrha and Mnemiopsis leidyi
The scyphomedusa Chrysaora quinquecirrha and lobate ctenophore Mnemiopsis leidyi are dominant consumers in the planktivorous food web in Chesapeake Bay, USA, and are important predators throughout much of their ranges. Our studies in the Patuxent River (a subestuary of Chesapeake Bay) and its tributary creeks suggest successive waves of population spread and trophic influence of these 2 gelatin...
متن کاملEffects of low dissolved oxygen on zooplankton predation by the ctenophore Mnemiopsis leidyi
The occurrence of low dissolved oxygen (DO), caused by vertical stratification and excess nutrient inputs, is an important and widely occurring physical feature in aquatic systems. Because some gelatinous species, such as the lobate ctenophore Mnemiopsis leidyi are more tolerant of low DO concentrations than their prey and competitors, hypoxia may have profound effects on trophic interactions. ...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 1995
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps129063