Growth and reproduction of gelatinous zooplankton exposed to low dissolved oxygen

Grove, Michael; Breitburg, Denise L.

doi:10.3354/meps301185

Cited by 55 publications

(41 citation statements)

References 35 publications

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“…In ctenophores, Grove and Breitburg (2005) found a significant reduction in growth at DO levels of 1.1 and 1.8 mL O 2 L −1 , both in small (0.2 to 2.0 mL biovolume) and larger (8.0 to 17.6 mL biovolume) specimens. This phenomenon seems to occur especially at high prey densities.…”

Section: Gelatinous Planktonmentioning

confidence: 97%

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Impacts of hypoxia on the structure and processes in pelagic communities (zooplankton, macro-invertebrates and fish)

et al. 2010

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Abstract. Dissolved oxygen (DO) concentration in the water column is an environmental parameter that is crucial for the successful development of many pelagic organisms. Hypoxia tolerance and threshold values are species-and stagespecific and can vary enormously. While some fish species may suffer from oxygen values of less than 3 mL O 2 L −1 through impacted growth, development and behaviour, other organisms such as euphausiids may survive DO levels as low as 0.1 mL O 2 L −1 . A change in the average or the range of DO may have significant impacts on the survival of certain species and hence on the species composition in the ecosystem with consequent changes in trophic pathways and productivity.Evidence for the deleterious effects of oxygen depletion on pelagic species is scarce, particularly in terms of the effect of low oxygen on development, recruitment and patterns of migration and distribution. While planktonic organisms have to cope with variable DOs and exploit adaptive mechanisms, nektonic species may avoid areas of unfavourable DO and develop adapted migration strategies. Planktonic organisms may only be able to escape vertically, above or beneath the Oxygen Minimum Zone (OMZ). In shallow areas only the surface layer can serve as a refuge, but in deep waters many organisms have developed vertical migration strategies to use, pass through and cope with the OMZ.Correspondence to: W. Ekau (wekau@zmt-bremen.de) This paper elucidates the role of DO for different taxa in the pelagic realm and the consequences of low oxygen for foodweb structure and system productivity. We describe processes in two contrasting systems, the semi-enclosed Baltic Sea and the coastal upwelling system of the Benguela Current to demonstrate the consequences of increasing hypoxia on ecosystem functioning and services.

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Section: Gelatinous Planktonmentioning

confidence: 97%

“…It is argued that because of their higher tolerance against low oxygen (than e.g. finfish; Grove and Breitburg, 2005) they are predestined to take a dominant role in ecosystems with declining oxygen conditions. In particular, ctenophores seem to exhibit a high degree of predation pressure on copepods (Purcell and Decker, 2005).…”

Section: Gelatinous Planktonmentioning

confidence: 99%

Impacts of hypoxia on the structure and processes in pelagic communities (zooplankton, macro-invertebrates and fish)

et al. 2010

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“…Ritter & Montagna (1999) also observed that polychates and oligochaetes tolerated hypoxic conditions better than other benthic species in a Texas Bay. In other words, hypoxia affects the population prosperity of living organisms differently according to taxon (Breitburg et al 1999, Keister et al 2000, Decker et al 2004, Grove & Breitburg 2005.…”

Section: Discussionmentioning

confidence: 99%

“…Concerning A. aurita, a recent study has shown that the medusae were more tolerable to low DO conditions (Ϲ4 mg O 2 L Ϫ1 ; equal to 2.8 ml O 2 L Ϫ1 ) than Spanish mackerel, and the number of fish larvae consumed by medusae increased with decreasing DO concentrations (Shoji et al 2005). Thus the effects of low DO concentrations may dramatically impact trophic interactions in the water column (Breitburg et al 1999, Keister et al 2000, Decker et al 2004, Grove & Breitburg 2005.…”

Section: Introductionmentioning

confidence: 99%

Effects of low dissolved oxygen on planula settlement, polyp growth and asexual reproduction of Aurelia aurita

Ishii

Ohba

Kobayashi

2008

Plankton Benthos Res

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Tokyo Bay is one of the most eutrophicated bays in Japan, and mass occurrences of scyphozoan jellyfish Aurelia aurita have often been observed with progress of eutrophication. In the coastal environment, the abundance of substrates suitable for A. aurita polyps are obviously increasing by reclamation. However, most suitable substrates for settling, except in the bottom-layer in the innermost part of Tokyo Bay, are occupied by other sessile organisms such as mussels, barnacles or ascidians. The bottom layer is characterized by low DO concentrations (Ϲ2.0 ml O 2 L Ϫ1) that turn to hypoxia during summer, resulting in low recruitment and low growth of other sessile organisms. To elucidate the mechanism by which mass occurrence of jellyfish occurs, adaptative behavior to hypoxia in planula larvae and the polyp stage was experimentally studied. In the present study, planula settlement was promoted by a decrease in DO concentrations, and apparent growth of polyps and production of daughter polyps by asexual budding were also observed, even in the polyps cultured in hypoxic waters. Moreover A. aurita polyps cultured under hypoxic conditions began strobilation and ephyrae were liberated after the DO concentration levels were restored. It is suggested that the occurrence of hypoxic waters is rather favorable for the survival, growth and asexual reproduction of A. aurita polyps, and it can directly contribute to the consequent production of A. aurita ephyrae in the next spring within Tokyo Bay.

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“…At approximately 0900 the following morning, adult ctenophores were removed and lengths and volumes recorded. Water from each jar was strained through a 35 m sieve, preserved with 10% acid Lugol's solution (Sullivan and Gifford, unpublished data;Grove and Breitburg, 2005), and eggs were enumerated. Egg production was normalized by ctenophore volume to facilitate comparisons among individuals.…”

Section: Methodsmentioning

confidence: 99%

Proceedings of the Smithsonian Marine Science Symposium

Lang¹,

Macintyre²,

Rützler³

2009

Smithsonian Contributions to the Marine Sciences

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s m i t h s o n i a n c o n t r i b u t i o n s t o t h e m a r i n e s c i e n c e s • n u m b e r 3 8 SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTIONEmphasis upon publication as a means of "diffusing knowledge" was expressed by the fi rst Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge." This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Contributions to Anthropology Smithsonian Contributions to Botany Smithsonian Contributions in History and Technology Smithsonian Contributions to the Marine Sciences Smithsonian Contributions to Museum Conservation Smithsonian Contributions to Paleobiology Smithsonian Contributions to ZoologyIn these series, the Institution publishes small papers and full-scale monographs that report on the research and collections of its various museums and bureaus. The Smithsonian Contributions Series are distributed via mailing lists to libraries, universities, and similar institutions throughout the world.Manuscripts submitted for series publication are received by the Smithsonian Institution Scholarly Press from authors with direct affi liation with the various Smithsonian museums or bureaus and are subject to peer review and review for compliance with manuscript preparation guidelines. General requirements for manuscript preparation are on the inside back cover of printed volumes. For detailed submissions requirements and to review the "Manuscript Preparation and Style Guide for Authors," visit the Submissions page at www.scholarlypress.si.edu. The paper used in this publication meets the minimum requirements of the American National Standard for Permanence of Paper for Printed Library Materials Z39. Foreword N early two-thirds of Earth's surface is covered by the ocean, a global system essential to all life. Impacts on one part of the ocean can have worldwide effects. The ocean moderates our climate, provides valuable resources, and produces at least half the oxygen we breathe: it makes our planet livable. We know little, however, about the physical, chemical, geological, and biological aspects of this crucial life support system. s m i t h s o n i a n c o n t r i b u t i o n s t o t h e m a r i n S M I T H S O N I A N C O N T R I B U T I O N S T O T H E M A R I N E S C I E N C E S MARINE BIODIVERSITY, EVOLUTION, AND SPECIATION S M I T H S O N I A N C O N T R I B U T I O N S T O T H E M A R I N E S C I E N C E S i i i • S M I T H S O N I A N C O N T R I B U T I O N S T O T H E M A R I N E S C I E N C E SThe Smithsonian Institution, in efforts to increase knowledge about the ocean, has established a ...

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Growth and reproduction of gelatinous zooplankton exposed to low dissolved oxygen

Cited by 55 publications

References 35 publications

Impacts of hypoxia on the structure and processes in pelagic communities (zooplankton, macro-invertebrates and fish)

Impacts of hypoxia on the structure and processes in pelagic communities (zooplankton, macro-invertebrates and fish)

Effects of low dissolved oxygen on planula settlement, polyp growth and asexual reproduction of Aurelia aurita

Proceedings of the Smithsonian Marine Science Symposium

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