Embryonic Development of Commercially Important Portunid Crab, Charybdis feriata (Linnaeus)
- *Corresponding Author:
- Soundarapandian P
Faculty of Marine Sciences
Centre of Advanced Study in Marine Biology
Annamalai University, Parangipettai-608 502, Tamil Nadu, India
E-mail: [email protected]
Received date March 23, 2013; Accepted date April 23, 2013; Published date May 03, 2013
Citation: Soundarapandian P, Ilavarasan N, Varadharajan D, Kumar J, Suresh B (2013) Embryonic Development of Commercially Important Portunid Crab, Charybdis feriata (Linnaeus). J Marine Sci Res Dev 3:122. doi: 10.4172/2155-9910.1000122
Copyright: © 2013 Soundarapandian P, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The quality and survival of newly hatched zoea will depend primarily on the embryonic development. So an attempt has been made to study the embryonic development in the portunid crab, Charybdis feriata. The embryonic development of C. feriata is divided into six stages, viz. blastula, gastrula, eye placode, pigment; heart beat and freshly hatched first zoea. In blastula stage, the eggs were round, golden yellow in colour and the diameter of the egg was 0.36 mm-0.37 mm. In gastrula stage, the eggs were round and deep yellow or yellowish orange in colour, and the diameter of the egg was 0.38 mm-0.39 mm. In eye placode stage, the eggs were round orange in colour and the diameter of egg was 40 mm-41 mm. In pigment stage, the eggs were brown in colour and the diameter of the egg was 0.42 mm-0.43 mm. In hear beat stage, the eggs were dark brown or black in colour, and the diameter of the egg was 0.44 mm-0.45 mm. The freshly hatched I zoea moved freely in the water, and its carapace length ranges from 1.05 mm-1.25 mm.