A STUDY ON LENGTH �WEIGHT RELATIONSHIPS AND MORPHOMETRIC CHARACTERISTICS OF FISH SPECIES BELONGING TO THREE DIFFERENT FAMILIES IN CHENNAI WATERS, INDIA

Edwin Prabakaran; T.; Jeyasingh Thompson; R.; Deepak Samuel; V.

Volume : VI, Issue : VIII, August - 2016

A STUDY ON LENGTH �WEIGHT RELATIONSHIPS AND MORPHOMETRIC CHARACTERISTICS OF FISH SPECIES BELONGING TO THREE DIFFERENT FAMILIES IN CHENNAI WATERS, INDIA

Edwin Prabakaran, T. , Jeyasingh Thompson, R. , Deepak Samuel, V.

Abstract :

The present study was aimed to analyse the morphometric and meristic characters for three marine fishes namely Nemipterus japonicus, Upeneus vittatus and Pomadasys maculatus, collected from Chennai, East coast of India. A total of 1500 individuals, 500 for each family were sampled and analysed. Coefficient of determination (R2>0.8 at p <0.001) was recorded for all species indicating significant relationship between length and weight for all the three species. The length–weight relationship Y=aXb fitted to the data collected for the value of parameter ‘b’ for the 3 families range between 2.646 and 3.043. The pooled data on 14 morphometric and 2 meristic characters were analysed using Canonical discriminant analysis out of which 7 characters (HL (Head Length), BD (Body Depth), WDF (Width of Dorsal Fin), TL (Total Length), PDL (Post Dorsal Length ), PDL (Post Dorsal Length ), TW (Total Weight) and PPD (Pre Pelvic Distance) ) were significantly different