Charybdis orientalis   (Dana,  1852) (Crab)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Malacostraca
Order:Decapoda
Family:Portunidae

Description
A transverse ridge on the cardiac region, as well as one additional ridge on either branchial region. Second spine of antero-lateral border rudimentary.

Carapace about two-thirds as long as broad, crossed transversely by salient granular lines. Front cut into 6 truncated teeth, not including the inner supra-orbital angles. Antero-lateral borders very little oblique, cut into six teeth of which the second is rudimentary and looks like a denticle cut out of the base of the first, while the last is not enlarged in adults, though in the young it may be. The posterior border of the dorsal surface of the carapace though straight forms a curve with the postero-lateral borders. Orbit without any particular dorsal inclination, its major diameter a little more than a third the width of the inter-orbital space. Arm with 3 spines on the anterior border and none or posterior border. Wrist with a strong spine at the inner angle and 2 or 3 spinules on the outer. Hand not tumid, 5 spines, of which 4 are large on the upper surface. In the fifth pair of legs the merus is nearly twice as long as broad, and has the usual spine on the posterior border.

This species close affinities with Charybdis anisodon distinguished by the presence of granular ridges on the carapace, by the five spines on the hand and by the serrated posterior border of the propodite of the last pair of legs.


Synonym (s)
Charybdis orientalis Dana 1852

Common Name (s)
• Kurchal
Economic Importance and Threats

Ecology
Habitat:  Rocky, Sandy

Biogeography


• Palk Bay INDIA
• Tamil Nadu, Gulf of Mannar (Lat: 8.5) (Long: 79) INDIA (Record: 2008)
• West Bengal, Sundarbans (Lat: 21.5) (Long: 88.17) INDIA
• Maharashtra, Mumbai (Lat: 18.98) (Long: 72.83) INDIA
• West Coast INDIA
• East Coast INDIA
• Gujarat INDIA

Literature Source(s)
  • Agarwal, VC and Alfred, JRB (1999) Handbook: Whales, dolphins and dugong from Indian seas ZSI, Calcutta 150 pp Available at - NCL, Pune
  • Mohan, JM (1978) Ecological studies on the fauna associated with economic seaweeds of south India-1. species composition, feeding habits and interrelationships Seaweed Research and Utilization Seaweed Research and Utilization Association, Tamil Nadu 3 17 Available at - NIO, Goa
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • Mandal, AK and Nandi, NC (1989) Fauna of Sundarban mangrove ecosystem, West Bengal, India Fauna of Conservations 3 35431 Available at - NIO, Goa
  • Kensley, B (1981) On the Zoogeography of Southern Afrian Decapod Crustacea, with a distributional checklist of the species Smithsonian Contributions to Zoology Smithsonian Institution Press, Washington, D.C. 338 23377 Available at - NIO, RC Kochi
  • Jeyabaskaran, R; Wafar, S and Wafar, M (2002) CD on Brachyuran Crabs of West Coast, India Available at - http://www.nio.org/Biology/brachyuran/index.html
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Dr. Ramesh, R; Dr. Nammalwar, P and Dr. Gowri, VS (2008) Database on coastal information of Tamil Nadu Report Submitted to Environmental Information System (ENVIS) Centre, Department of Environment, Government of Tamil Nadu Institute for Ocean Management, Anna University, Chennai, Tamil Nadu. Available at - http://tnenvis.nic.in/PDF/coastal%20data.pdf
  • Dholakia, AD (2004) Marine resources Fisheries and aquatic resources of India Daya publishing house 271-303 Available at - NIO, Goa

Page last updated on:2011-10-28

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