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dc.contributor.authorBurford, Michele
dc.contributor.authorPreston, Nigel
dc.contributor.authorMinh, Truong Hoang
dc.contributor.authorThuyet Hoa, Tran Thi
dc.contributor.authorBunn, Stuart
dc.contributor.authorFry, Vanessa
dc.date.accessioned2017-05-03T14:13:26Z
dc.date.available2017-05-03T14:13:26Z
dc.date.issued2004
dc.date.modified2009-09-04T06:05:11Z
dc.identifier.issn1355557X
dc.identifier.doi10.1111/j.1365-2109.2004.01012.x
dc.identifier.urihttp://hdl.handle.net/10072/20507
dc.description.abstractStable isotope analysis was used to determine the sources of dietary nitrogen (N) and carbon (C) for shrimp during the rearing phase in extensive rice-shrimp ponds in My Xuyen and Gia Rai districts, Vietnam. Farm-made feed was added as a food source in shrimp ponds in My Xuyen district, and based on stable isotope analyses, was generally a poor dietary source. The commercial formulated feed used in Gia Rai also appeared to contribute little directly to the nutritional needs of the shrimp. In contrast, the natural biota in all ponds appeared to contribute substantially. In particular, biota from beam trawls and benthic organic matter were the most likely sources of nutrition in My Xuyen ponds, while benthic organic matter was the main source in Gia Rai ponds. d15N ratios in the natural biota in My Xuyen farms decreased over the growing season, suggesting increased N fixation in the case of the benthic organic matter reaching values as low as 1鮠This suggests N-limitation in the ponds and that natural biota become increasingly dependent on N fixed by algae and/or other microorganisms. There is the potential to promote the growth of the plankton and hence, the other natural biota, by the judicious addition of fertilizer.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent105342 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoeng
dc.publisherBlackwell Publishing
dc.publisher.placeEngland
dc.publisher.urihttps://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-2109.2004.01012.x
dc.relation.ispartofpagefrom194
dc.relation.ispartofpageto203
dc.relation.ispartofjournalAquaculture Research
dc.relation.ispartofvolume35
dc.subject.fieldofresearchFisheries sciences
dc.subject.fieldofresearchcode3005
dc.titleDominant sources of dietary carbon and nitrogen for shrimp reared in extensive rice-shrimp ponds
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 2004 Blackwell Publishing. This is the author-manuscript version of the paper. Reproduced in accordance with the copyright policy of the publisher. The definitive version is available at www.interscience.wiley.com
gro.date.issued2004
gro.hasfulltextFull Text
gro.griffith.authorBunn, Stuart E.
gro.griffith.authorBurford, Michele A.


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