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2019•Journal of Entomology and Zoology StudiesOpen access

Morphometry and length-weight relationship of rainbow trout Oncorhynchus mykiss Walbaum, 1792 (Salmoniformes: Salmonidae) from Kashmir

Asifa Wali, Tasaduq Hussain Shah, MH Balkhi, Bilal Ahmad Bhat, FA Bhat, Sauliheen Qadri, Ishrat Mohamad

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Abstract

The present study involves analysis of morphometric characters and length-weight relationship of Oncorhynchus mykiss collected on monthly basis from three state owned trout fish farms. Eleven morphometric characters studied showed high level of interdependence (R2 = 0.502 to 0.876) among which standard length and pre-anal length were found to have highly significant relationship with total length (R2 = 0.876 and 0.807 respectively), reflecting thereby that the morphometric characters of fish were highly correlated. The length-weight relationship was established as W=1.957L3.028. The correlation coefficient (R2) for length-weight relationship was found to be 0.608, indicating a positive relationship between the two parameters.

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The present study involves analysis of morphometric characters and length-weight relationship of Oncorhynchus mykiss collected on monthly basis from three state owned trout fish farms. Eleven morphometric characters studied showed high level of interdependence (R2 = 0.502 to 0.876) among which standard length and pre-anal length were found to have highly significant relationship with total length (R2 = 0.876 and 0.807 respectively), reflecting thereby that the morphometric characters of fish were highly correlated. The length-weight relationship was established as W=1.957L3.028. The correlation coefficient (R2) for length-weight relationship was found to be 0.608, indicating a positive relationship between the two parameters.

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Available abstract

The present study involves analysis of morphometric characters and length-weight relationship of Oncorhynchus mykiss collected on monthly basis from three state owned trout fish farms. Eleven morphometric characters studied showed high level of interdependence (R2 = 0.502 to 0.876) among which standard length and pre-anal length were found to have highly significant relationship with total length (R2 = 0.876 and 0.807 respectively), reflecting thereby that the morphometric characters of fish were highly correlated. The length-weight relationship was established as W=1.957L3.028. The correlation coefficient (R2) for length-weight relationship was found to be 0.608, indicating a positive relationship between the two parameters.

Key concepts: Rainbow trout, Biology, Fish <Actinopterygii>, Salmonidae, Positive relationship, Fishery, Positive correlation, Trout

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Morphometry and length-weight relationship of rainbow trout Oncorhynchus mykiss Walbaum, 1792 (Salmoniformes: Salmonidae) from Kashmir — Research Paper | ScholarLens