Show simple item record

dc.contributor.authorGao, Yongli
dc.contributor.authorYin, Kedong
dc.contributor.authorHe, Lei
dc.contributor.authorJ. Harrison, Paul
dc.date.accessioned2017-05-03T13:52:08Z
dc.date.available2017-05-03T13:52:08Z
dc.date.issued2012
dc.date.modified2013-06-30T23:39:55Z
dc.identifier.issn14634988
dc.identifier.urihttp://hdl.handle.net/10072/52154
dc.description.abstractTrash fish is common feed for caged fish in marine aquaculture. Most feed is not eaten and enters the water surrounding fish farms. The organic matter in trash fish is a nutrient source contributing to aquatic eutrophication impacts such as algal blooms and low oxygen. The objective of this study was to examine whether phytoplankton utilized organic matter of trash fish directly. Fifteen microalgae species were cultured in the medium made of open oceanic water with f/2 enrichment (Treatment A, f/2 medium), with only silicate added (Treatment B, for diatom species) and with fish tissue+silicate (Treatment C). Four species grew significantly faster on fish tissue than in f/2 medium, another 4 species had similar growth rates between the two treatments (A and C). Growth rates of Pyramimonas sp. on different amount of fish tissue appeared to increase initially with increasing added fish tissue weight, reached a maximum at an intermediate amount of fish tissue additions. Time course of batch culture of Chaetoceros curvisetus showed that the species was capable of utilizing organic nitrogen released from fish tissue and grew well. Dissolved organic nitrogen (DON) was lower in the batch culture with algae and fish tissue than that with fish tissue but without algae in the medium, which indicated a direct utilization of DON during algal growth. These results indicated that fish tissue could be a direct nutrient source to support phytoplankton growth and coastal management needs to pay attention to organic contamination from trash fish.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherTaylor & Francis
dc.publisher.placeUnited States
dc.publisher.urihttp://www.tandfonline.com/doi/abs/10.1080/14634988.2012.687567#.Uczyo9hkqJo
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom234
dc.relation.ispartofpageto240
dc.relation.ispartofissue2
dc.relation.ispartofjournalAquatic Ecosystem Health & Management
dc.relation.ispartofvolume15
dc.rights.retentionY
dc.subject.fieldofresearchEcology not elsewhere classified
dc.subject.fieldofresearchPlant biology
dc.subject.fieldofresearchcode310399
dc.subject.fieldofresearchcode3108
dc.titlePhytoplankton growth on organic nutrients from trash fish
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2012
gro.hasfulltextNo Full Text
gro.griffith.authorYin, Kedong


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record