Organically selective movement and deposit-feeding in juvenile sea cucumber, Australostichopus mollis determined in situ and in the laboratory

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dc.contributor.author Slater, MJ en
dc.contributor.author Jeffs, Andrew en
dc.contributor.author Sewell, Mary en
dc.date.accessioned 2014-10-31T03:31:32Z en
dc.date.issued 2011 en
dc.identifier.citation Journal of Experimental Marine Biology and Ecology, 2011, 409 (1-2), pp. 315 - 323 en
dc.identifier.issn 0022-0981 en
dc.identifier.uri http://hdl.handle.net/2292/23390 en
dc.description.abstract Highly accurate methods were used to investigate varying types of feeding selectivity in juvenile sea cucumber, Australostichopus mollis both in situ and in laboratory experiments. Juvenile A. mollis exhibited significant levels of positive selectivity for organic particles. Nitrogen enrichment in fine grain foregut samples exceeded 100% compared to diet sediments, whilst carbon enrichment was as high as 145%. Foregut organic enrichment was, however, less than that reported for other aspidochirote holothurians. In laboratory behavioural experiments significantly more juveniles inhabited areas where sediment total organic matter (TOM) was higher. However, the ability of juveniles to distinguish between different TOM levels of sediments became limited once TOM in treatments exceeded approximately 3%. Comparative analyses of grain size spectra in foregut and diet sediments, however, showed feeding is non-selective for particle size. The ability of juvenile A. mollis to effectively select organic particles from sediments underlines the importance of deposit-feeding sea cucumbers in nutrient recycling and regulation in coastal sediments. en
dc.relation.ispartofseries Journal of Experimental Marine Biology and Ecology en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0022-0981/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Organically selective movement and deposit-feeding in juvenile sea cucumber, Australostichopus mollis determined in situ and in the laboratory en
dc.type Journal Article en
dc.identifier.doi 10.1016/j.jembe.2011.09.010 en
pubs.issue 1-2 en
pubs.begin-page 315 en
pubs.volume 409 en
pubs.end-page 323 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 265822 en
pubs.org-id Science en
pubs.org-id Biological Sciences en
pubs.org-id Marine Science en
dc.identifier.eissn 1879-1697 en
pubs.record-created-at-source-date 2014-10-31 en


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