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Article: Food resources of shredders and other benthic macroinvertebrates in relation to shading conditions in tropical Hong Kong streams

TitleFood resources of shredders and other benthic macroinvertebrates in relation to shading conditions in tropical Hong Kong streams
Authors
KeywordsAllochthonous
Autochthonous
Food Web
Gut Contents
Stable Isotopes
Issue Date2008
PublisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/FWB
Citation
Freshwater Biology, 2008, v. 53 n. 10, p. 2011-2025 How to Cite?
Abstract1. Gut content analyses (GCA) of benthic macroinvertebrates, supplemented by carbon and nitrogen stable isotope analyses (SIA), were used to determine the relative contribution of leaf litter and autochthonous food sources to consumer biomass in five shaded and five unshaded streams in tropical Hong Kong. 2. Only four obligate shredders and two facultative shredders were identified out of 58 morphospecies dissected. Non-shredder taxa consumed little (<23% food eaten) coarse particulate organic matter (CPOM) in spite of its abundance in streams, and GCA revealed that fine particulate organic matter was the major food (25-99%) of most primary consumers. 3. Stable isotope analysis results were in general agreement with the findings of GCA, and confirmed that three of the four obligate shredders had a high dependence (55-78% of assimilated carbon) on CPOM. 4. Autochthonous energy sources were important in all streams: non-shredding primary consumers examined, which accounted for 72% of total macroinvertebrate abundance in shaded streams, derived (on average) 61% of their biomass from autochthonous foods; the equivalent values for unshaded streams were 72% (abundance) and 71% (biomass). © 2008 The Authors.
Persistent Identifierhttp://hdl.handle.net/10722/179076
ISSN
2015 Impact Factor: 2.933
2015 SCImago Journal Rankings: 1.574
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, AOYen_US
dc.contributor.authorDudgeon, Den_US
dc.date.accessioned2012-12-19T09:51:48Z-
dc.date.available2012-12-19T09:51:48Z-
dc.date.issued2008en_US
dc.identifier.citationFreshwater Biology, 2008, v. 53 n. 10, p. 2011-2025en_US
dc.identifier.issn0046-5070en_US
dc.identifier.urihttp://hdl.handle.net/10722/179076-
dc.description.abstract1. Gut content analyses (GCA) of benthic macroinvertebrates, supplemented by carbon and nitrogen stable isotope analyses (SIA), were used to determine the relative contribution of leaf litter and autochthonous food sources to consumer biomass in five shaded and five unshaded streams in tropical Hong Kong. 2. Only four obligate shredders and two facultative shredders were identified out of 58 morphospecies dissected. Non-shredder taxa consumed little (<23% food eaten) coarse particulate organic matter (CPOM) in spite of its abundance in streams, and GCA revealed that fine particulate organic matter was the major food (25-99%) of most primary consumers. 3. Stable isotope analysis results were in general agreement with the findings of GCA, and confirmed that three of the four obligate shredders had a high dependence (55-78% of assimilated carbon) on CPOM. 4. Autochthonous energy sources were important in all streams: non-shredding primary consumers examined, which accounted for 72% of total macroinvertebrate abundance in shaded streams, derived (on average) 61% of their biomass from autochthonous foods; the equivalent values for unshaded streams were 72% (abundance) and 71% (biomass). © 2008 The Authors.en_US
dc.languageengen_US
dc.publisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/FWBen_US
dc.relation.ispartofFreshwater Biologyen_US
dc.rightsFreshwater Biology. Copyright © Blackwell Publishing Ltd.-
dc.subjectAllochthonousen_US
dc.subjectAutochthonousen_US
dc.subjectFood Weben_US
dc.subjectGut Contentsen_US
dc.subjectStable Isotopesen_US
dc.titleFood resources of shredders and other benthic macroinvertebrates in relation to shading conditions in tropical Hong Kong streamsen_US
dc.typeArticleen_US
dc.identifier.emailDudgeon, D: ddudgeon@hku.hken_US
dc.identifier.authorityDudgeon, D=rp00691en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1111/j.1365-2427.2008.02022.xen_US
dc.identifier.scopuseid_2-s2.0-51249083897en_US
dc.identifier.hkuros151369-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-51249083897&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume53en_US
dc.identifier.issue10en_US
dc.identifier.spage2011en_US
dc.identifier.epage2025en_US
dc.identifier.isiWOS:000259148200008-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLi, AOY=24773824300en_US
dc.identifier.scopusauthoridDudgeon, D=7006559840en_US
dc.identifier.citeulike3199399-

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