Journal of the Marine Biological Association of India

Stock structure analysis of oil sardine Sardinella longiceps (Valenciennes, 1847) from southeast and southwest coasts of India

Volume 57 Issue 1

R. Remya*, E.Vivekanandan, G.B. Sreekanth, T.V Ambrose, Preetha G Nair, U.Manjusha,S. Thomas and K. S Mohamed

10.6024/jmbai.2015.57.1.01820-02

Abstract

AbstractA total of 200 specimens of oil sardine Sardinella longiceps collected from Kochi in the southwest coast and Chennai in the southeast coast were subjected to truss analysis. A truss network was constructed by interconnecting 10 landmarks to form a total of 21 truss distance variables extracted from the landmarks. The transformed truss measurements were subjected to factor analysis which revealed that there is no separation of the stocks along southeast and southwest coasts. The marginal differences in shape and form are attributed to the ecological differences in the habitats which is evident from differences in length weight relationships and feeding intensity of the population along these two coasts.

Keywords

 truss network analysis, feeding intensity, length-weight relationship

Date : 15-03-2015