ISSN (Online): 2456-6268
Journal of Fisheries and Life Sciences

Journal of Fisheries and Life Sciences

2017, Vol. 2 Issue 1, Part JUNE
Species differentiation of deep sea crabs (Charybdis feriatus, Portunus pelagicus and P. sanguinolentus) using conventional morphometric data off Ratnagiri Coast, India
Author(s): M. Mangesh Bhosale, R. A. Pawar, M. S. Sawant and A. S. Pawase
Abstract: Deep sea crab biodiversity has been severely hampered by insufficient taxonomic knowledge. In present study, blue swimming crabs namely, Portunus pelagicus, P. sanguinolentus and Charybdis feriatus, off Ratnagiri coast, India, were investigated with a view to differentiate them based on conventional morphometry. The data was composed of nine variables on dorsal aspect of cephalothorax. The Student’s t-test significantly differentiated three species (p < 0.05). Multivariate techniques, PCA and CVA, used for conventional data showed that PCA could only differentiate Charybdis feriatus as another genus; however, CVA set apart each species from others. The present investigation clearly differentiated the species investigated using efficient morphometric tool, which will be further used for stock identification, geographic, ecological and evolutionary variations.
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