Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 435445
Title Water flow affects zooplankton feeding by the scleractinian coral galaxea fascicularis on a polyp and colony level
Author(s) Wijgerde, T.H.M.; Spijkers, P.; Karruppannan, E.W.; Verreth, J.A.J.; Osinga, R.
Source Journal of Marine Biology 2012 (2012). - ISSN 1687-9481
Department(s) Aquaculture and Fisheries
ASG Facilities & Services (WU)
Publication type Refereed Article in a scientific journal
Publication year 2012
Abstract Several factors may affect heterotrophic feeding of benthic marine invertebrates, including water flow rate and polyp context (i.e., the presence of neighbouring polyps). We tested the interactive effects of water flow rate and polyp context on zooplankton feeding by the scleractinian coral Galaxea fascicularis. Single polyps and colonies were incubated in a flow cell for 30 minutes with an ambient Artemia nauplii concentration of 10,000¿ and water flow rates ranging from 1.25 to 40¿cm¿. Water flow rate and polyp context showed significant main and interactive effects on feeding rates of G. fascicularis polyps. More specifically, feeding rates were optimal at flow rates of 1.25¿cm¿ for single polyps and 5 to 10¿cm¿ for polyps inhabiting colonies. The presence of epizoic acoelomorph flatworms may have negatively affected the observed feeding rates, especially at high flow. Our results demonstrate that water flow affects coral feeding and thus heterotrophic nutrient input at both a polyp and colony level. These findings are of relevance to our understanding of how biotic and abiotic factors interact on coral heterotrophy and may serve to optimise coral aquaculture.
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