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Article: An experimental study of the effects of predatory fish on macroinvertebrates in a Hong Kong stream

TitleAn experimental study of the effects of predatory fish on macroinvertebrates in a Hong Kong stream
Authors
Issue Date1991
PublisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/FWB
Citation
Freshwater Biology, 1991, v. 25 n. 2, p. 321-330 How to Cite?
AbstractPredation upon macroinvertebrates by loach Oreonectes platycephalus (Cobitidae) was studied. Taxa were influenced differently, with mayflies decreasing by a factor of two while the more mobile shrimps (Atyidae) were unaffected. Chironomid abundance (largely Chironominae) was unaffected by predator density and increased in week four. Detritus acted as a confounding variable at this time. While invertebrates were more abundant in cages lacking fish, there were no fewer invertebrates in cages with two fish than with one fish. This may indicate the presence of secure refuges among substrates in the cages. No significant effects of predators on relative prey abundance or species richness were detected. -from Author
Persistent Identifierhttp://hdl.handle.net/10722/178519
ISSN
2015 Impact Factor: 2.933
2015 SCImago Journal Rankings: 1.574

 

DC FieldValueLanguage
dc.contributor.authorDudgeon, Den_US
dc.date.accessioned2012-12-19T09:48:11Z-
dc.date.available2012-12-19T09:48:11Z-
dc.date.issued1991en_US
dc.identifier.citationFreshwater Biology, 1991, v. 25 n. 2, p. 321-330en_US
dc.identifier.issn0046-5070en_US
dc.identifier.urihttp://hdl.handle.net/10722/178519-
dc.description.abstractPredation upon macroinvertebrates by loach Oreonectes platycephalus (Cobitidae) was studied. Taxa were influenced differently, with mayflies decreasing by a factor of two while the more mobile shrimps (Atyidae) were unaffected. Chironomid abundance (largely Chironominae) was unaffected by predator density and increased in week four. Detritus acted as a confounding variable at this time. While invertebrates were more abundant in cages lacking fish, there were no fewer invertebrates in cages with two fish than with one fish. This may indicate the presence of secure refuges among substrates in the cages. No significant effects of predators on relative prey abundance or species richness were detected. -from Authoren_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.titleAn experimental study of the effects of predatory fish on macroinvertebrates in a Hong Kong streamen_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.scopuseid_2-s2.0-0026301421en_US
dc.identifier.volume25en_US
dc.identifier.issue2en_US
dc.identifier.spage321en_US
dc.identifier.epage330en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridDudgeon, D=7006559840en_US

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