alexa Comparative morphometrics of two populations of giant river catfish (Mystus seenghala) from the Indus river system.
Agri and Aquaculture

Agri and Aquaculture

Journal of Aquaculture Research & Development

Author(s): Saini A, Dua A, Mohindra V

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Abstract Giant river catfish (Mystus seenghala) from the Beas river were compared with a population in the Sutlej river of the Indus river system using 28 morphometric characters. Discriminant analyses and a univariate anova were used to explore these data. Allometric transformation of each measurement was done to eliminate correlations with size. The stepwise discriminant analysis retained nine variables that significantly discriminated the Beas samples from the Sutlej samples. Using these variables, 91.2\% (original) and 89.0\% (cross validated) of fish were classified into their correct samples. Misclassification was higher for the Sutlej samples (12.5\%) than for the Beas samples (6.3\%). The results of the discriminant analyses showed that variability in the Beas samples was more homogeneous and provided a more characteristic picture of the group than the Sutlej samples. The univariate ANOVA revealed significant differences between the means of the two populations for 12 of the 28 transformed morphometric measurements. © 2008 ISZS, Blackwell Publishing and IOZ/CAS. This article was published in Integr Zool and referenced in Journal of Aquaculture Research & Development

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