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A comparative morphologic and craniometric analysis of grass carp (Ctenopharyngodon idella) population from Punjab, Pakistan

. ARSHIA NASEER, MUHAMMAD IMRAN, ABDUL MAJID KHAN & MUHAMMAD AMMAR


Abstract

Morpho-craniometric analysis of a fish plays a very important role to determine intraspecific variations. The intraspecific variations of Ctenopharyngodon idella were investigated in the current study through morphological and craniometric analysis. These variations are due to the sensitivity of fish in altering aquatic habitat. A total of twenty samples of C. idella were collected from two different sampling sites (ten from each) named as head Balloki (River Ravi) and head Trimmu (River Chenab). The results of the present study demonstrated the clear-cut variations among the morpho and craniometric variables of different C. idella populations. Moreover, the populations at both sites showed negative allometric growth but it was more prominent at site head Balloki.

Keywords: Morphometric analysis, Craniometry, Phenotypic plasticity, Morphological variations, intraspecific variations

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