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dc.contributor.authorDuarte, Sofia Alexandra Ferreira-
dc.contributor.authorFidalgo, Maria Leonor-
dc.contributor.authorPascoal, Cláudia-
dc.contributor.authorCássio, Fernanda-
dc.date.accessioned2012-12-18T14:03:05Z-
dc.date.available2012-12-18T14:03:05Z-
dc.date.issued2012-
dc.identifier.issn1573-5117por
dc.identifier.issn0018-8158por
dc.identifier.urihttps://hdl.handle.net/1822/21686-
dc.descriptionThis version does not correspond to the published one. To access the final version go to: http://www.springerlink.com/content/a31518u452m03286/por
dc.description.abstractIn aquatic ecosystems, microorganisms and invertebrates provide critical links between plant detritus and higher trophic levels. Atyaephyra desmarestii is an omnivorous decapod that inhabits freshwaters and exhibits high tolerance to temperature oscillations and high ability to colonize new habitats. Although A. desmarestii is able to ingest a variety of foods, few studies have been conducted to elucidate the role of this freshwater shrimp on detritus breakdown in streams. In this study, A. desmarestii was allowed to feed on conditioned or unconditioned alder and eucalyptus leaves in microcosms with or without access to its fecal pellets. At the end of the experiment, total body length of the animals was measured, and the remaining leaves and fecal pellets were used for dry mass quantification and assessment of bacterial and fungal diversity by denaturing gradient gel electrophoresis (DGGE). Cluster analyses of DGGE fingerprints indicated that the major differences in microbial communities on leaves were between leaf types, while on fecal pellets were between conditioned and unconditioned leaves. However, the consumption rate by the shrimp did not differ between leaf types, and was significantly higher on leaves conditioned by microorganisms and in treatments without access to feces. In treatments without access to feces, the production of feces and fine particulate organic matter was also significantly higher for conditioned leaves. Overall, our results support the feeding plasticity of A. desmarestii and its potential role in plant litter breakdown in streams. This might have implications for maintaining stream ecosystem functioning, particularly if more vulnerable shredders decline.por
dc.description.sponsorshipThe Portuguese Foundation for the Science and Technology supported S. Duarte (SFRH/BPD/47574/2008)por
dc.language.isoengpor
dc.publisherSpringerpor
dc.rightsopenAccesspor
dc.subjectFreshwater decapodpor
dc.subjectConsumption ratepor
dc.subjectDetritus qualitypor
dc.subjectFungipor
dc.subjectBacteriapor
dc.subjectAtyaephyra desmarestiipor
dc.titleThe role of the freshwater shrimp atyaephyra desmarestii in leaf litter breakdown in streamspor
dc.typearticlepor
dc.peerreviewedyespor
dc.relation.publisherversionhttp://www.springerlink.com/content/a31518u452m03286/por
sdum.publicationstatuspublishedpor
oaire.citationStartPage149por
oaire.citationEndPage157por
oaire.citationIssue1por
oaire.citationTitleHydrobiologiapor
oaire.citationVolume680por
dc.identifier.doi10.1007/s10750-011-0912-0por
dc.subject.wosScience & Technologypor
sdum.journalHydrobiologiapor
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