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dc.contributor.authorFatemi, M.
dc.contributor.authorKaymaram, F.
dc.contributor.authorParafkandeh Haghighi, F.
dc.contributor.authorVosoughi, G.H.
dc.contributor.authorTaghavi Motlagh, S.A.
dc.coverage.spatialIranen_US
dc.coverage.spatialTehranen_US
dc.date.accessioned2018-02-11T19:52:01Z
dc.date.available2018-02-11T19:52:01Z
dc.date.issued2009
dc.identifier.issn1562-2916
dc.identifier.urihttp://hdl.handle.net/1834/11199
dc.description.abstractAge structure of the Caspian Sea anchovy kilka, Clupeonella engrauliformis, was estimated for the first time by back-calculation methods. Otolith growth and the rate of increment in anchovy kilka were examined to determine whether otoliths could be used to back calculate body sizes at various life stages. Sampling was carried out on commercial fishing vessels board along the Iranian coast in 2007. The age structure of the samples ranged from 2 to 7 years old which was dominated by the third year class (38.6%). The largest fish measured was 137.2mm fork length. The relationship between fork length (FL) and otolith radius (OR) was described by the following equation: FL=13.77+ 82.78*OR (r2=0.92). Three proportional back-calculation methods, Fraser-Lee, Whitney & Carlander and Dahl-Lea models, were compared by using data sets of anchovy kilka otoliths, and we validated back calculation by comparing them with observed lengths. Back calculated lengths generally corresponded well with observed lengths in anchovy kilka age classes. Variance of the back calculated length data obtained from three models indicated no significant difference (P>0.05).en_US
dc.language.isoenen_US
dc.titleValidation of back-calculation methods using otoliths to determine the length of anchovy kilka (Clupeonella engrauliformis)en_US
dc.typeJournal Contributionen_US
dc.bibliographicCitation.issue2en_US
dc.bibliographicCitation.titleIranian Journal of Fisheries Scienceen_US
dc.bibliographicCitation.volume8en_US
dc.description.statusPublisheden_US
dc.format.pagerangepp.115-126en_US
dc.subject.asfaClupeonella engrauliformisen_US
dc.subject.asfaOtolithen_US
dc.subject.asfaBack-calculationen_US
dc.subject.asfaAge structureen_US
dc.type.refereedRefereeden_US
refterms.dateFOA2021-01-30T18:48:16Z


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