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dc.contributor.authorFilizadeh, Y.
dc.coverage.spatialScotlanden_US
dc.coverage.spatialKelvin Riveren_US
dc.date.accessioned2018-04-25T19:41:56Z
dc.date.available2018-04-25T19:41:56Z
dc.date.issued2001
dc.identifier.issn1026-1354
dc.identifier.urihttp://hdl.handle.net/1834/12659
dc.description.abstractBiological control of aquatic weeds has raised much interest because of the sudden and often short-lasting effects of mechanical and chemical controls. The use of grass carp (Ctenopharyngodon idella) is mainly for the production of food and control of aquatic weeds. The aims of this study were to assess the degree and duration of weed control achieved at two stocking densities (150 and 250 kg ha-1) and to determine the change of fish size and their survival in Kelvin River. Analysis of variance showed that both stocking densities of grass carp caused a significant (p < 0.001) reduction of aquatic weeds. Results showed that free floating and submerged weeds by their soft tissues are often regarded as amongst the palatable species than emergent and floating-leaved species. Experimental results showed that about 60% fish survival with substantial weed reduction by the end of first year after releasing. Results showed that the average weight of grass carp in both 150 and 250 kg ha-1 at l, 2, and 3 years after releasing were 930, 1680, 2350, and 840, 1550, and 2200 grams respectively. Experimental results showed that weeds control by grass carp is temperature dependent and, to be effective, requires water temperature in excess of 16ᵒC for at least three months of the year.en_US
dc.language.isofaen_US
dc.relation.urihttp://isfj.areo.ir/en_US
dc.subject.otherBiologicalen_US
dc.subject.otherMechanicalen_US
dc.subject.otherChemicalen_US
dc.titleBiological control of aquatic weeds by Grass Carp in Kelvin River (Scotland)en_US
dc.typeJournal Contributionen_US
dc.bibliographicCitation.issue4en_US
dc.bibliographicCitation.titleIranian Scientific Fisheries Journalen_US
dc.bibliographicCitation.volume9en_US
dc.description.statusPublisheden_US
dc.format.pagerangepp.53-64en_US
dc.subject.asfaAquaticen_US
dc.subject.asfaWeedsen_US
dc.subject.asfaGrass Carpen_US
dc.subject.asfaCtenopharyngodon idellaen_US
dc.subject.asfaSizeen_US
dc.subject.asfaSurvivalen_US
dc.subject.asfaTissueen_US
dc.subject.asfaSpeciesen_US
dc.subject.asfaWeighten_US
dc.subject.asfaTemperatureen_US
dc.type.refereedRefereeden_US
refterms.dateFOA2021-01-30T18:48:21Z


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