Thalamita crenata   Ruppell,  1830 (Crab)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Malacostraca
Order:Decapoda
Family:Portunidae

Image copyrights: Guam

Description
Size: Length of carapace: 34 mm.
Breadth of carapace: 51 mm.

Color: Uniform greenish grey, claws pinkish, tips bearing a few hairs.

Transverse ridges of carapace faint; outer surface of propodus of chelipeds almost smooth; basal segment of antenna with several indistinct granules.
Carapace, length two thirds the breadth, slightly convex, nearly smooth, crossed transversely by fine faint granular ridges. Front cut into six rounded lobes of nearly equal size, not including the arched inner supra-orbital angles each of which is as broad as any two of the true frontal lobes. Antero-lateral borders cut into five claw shaped teeth of nearly equal size, or slightly decreasing in size from before backwards. Posterior border of dorsal surface of carapace forming a curve with the postero-lateral borders, its length about one-third the greatest breadth of the carapace. Chelipeds a little unequal, the larger one in the male being almost 2┬╝ times the length of the carapace, with a nearly smooth surface. Anterior border of arm with 3 enlarged spines and some granules, posterior border with a few squamiform granules only. The fingers of the larger hand are not quite as long as the somewhat swollen palm, those of the smaller hand are as long as their palm. Legs smooth, unarmed except for the usual spine at the far end of the posterior border of the merus of the last pair and for 2 or 3 denticles on the posterior border of the propodite of the last pair.

The frontal teeth of this species show a surprising plasticity, necessitating duplicate appearance of the species in the key. Its most characteristic feature is the massive, smooth, rounded chelipeds.


Synonym (s)
Portunus crenatus Latreille, 1829
Protunus crenata Latreille, 1829
Thalamita crenata De Man, 1887
Thalamita prymna var. crenata Laurie, 1906
Thalamita crenata H.M. Edwards, 1834
Thalamita prymna crenata (Latreille, 1829)

Common Name (s)
• Karchalo
Economic Importance and Threats

Ecology
Habitat:  Reef Associated, Estuarine, Sandy, Muddy, Coastal

Biogeography


• Tamil Nadu, Mandapam INDIA
• Andaman and Nicobar Islands, Andaman Islands (Lat: 10) (Long: 93) INDIA
• Andaman and Nicobar Islands, Nicobar Island (Lat: 7) (Long: 93) INDIA
• Andaman and Nicobar Islands, Andaman Islands (Lat: 12.5) (Long: 92.75) INDIA
• Maharashtra, Mumbai (Lat: 18.98) (Long: 72.83) INDIA
• Orissa, Chilika Lake (Lat: 19.77) (Long: 85.33) INDIA
• Tamil Nadu, Krusadai Island (Lat: 9.23) (Long: 79.22) INDIA
• Maharashtra, Mumbai (Lat: 18.98) (Long: 72.83) INDIA
• Tamil Nadu, Shingle Island INDIA
• Tamil Nadu, Pichavaram Mangrove Forest (Lat: 11.03) (Long: 79.78) INDIA
• Lakshadweep INDIA
• Red Sea
• Maharashtra, Mumbai INDIA
• Andaman and Nicobar Islands, Andamans INDIA
• Mergui MYANMAR
• Karachi PAKISTAN
• Persian Gulf
• Orissa, Chilika Lake INDIA
• Bay of Bengal INDIA
• Pinang MALAYSIA
• East Coast, Coromandel, Pulicat Lake INDIA (Record: 1997-1998)
• Tamil Nadu, Gulf of Mannar INDIA
• Tamil Nadu, Chennai INDIA
• Tamil Nadu, Pichavaram INDIA
• INDIA
• Karnataka, Karwar (Lat: 74.18) (Long: 14.88) INDIA
• Andaman and Nicobar Islands INDIA
• Andaman and Nicobar Islands, North Reef Island INDIA
• Karnataka INDIA (Record: 2001-2007)
• Palk Bay INDIA
• Andaman and Nicobar Islands, Bimbletan INDIA
• Tamil Nadu, Pulicat Lake (Lat: 13.41) (Long: 80.05) INDIA
• Tamil Nadu, Pulicat Lake (Lat: 13.91) (Long: 80.31) INDIA
• Orissa, Chilika Lake (Lat: 19.46) (Long: 85.1) INDIA
• Orissa, Chilika Lake (Lat: 19.9) (Long: 85.58) INDIA
• Tamil Nadu INDIA
• West Bengal (Lat: 21.16) (Long: 85.83) INDIA
• West Bengal (Lat: 21.63) (Long: 89.83) INDIA
• Gujarat INDIA
• West Bengal, South 24 Parganas INDIA
• Andaman and Nicobar Islands, Little Andaman, Hut Bay (Lat: 10.64) (Long: 92.57) INDIA
• Andaman and Nicobar Islands, Little Andaman INDIA
• Andaman and Nicobar Islands, Little Andaman, Harbindar Bay INDIA
• Andaman and Nicobar Islands, Little Andaman, Dugong Creek (Lat: 10.75) (Long: 92.5) INDIA
• Andaman and Nicobar Islands, Little Andaman, Netaji Nagar INDIA

Literature Source(s)
  • Tikadar, BK; Daniel, A and Subbarao, NV (1986) Sea shore animals of Andaman and Nicobar Islands The Director, ZSI, Kolkatta 188 Available at - ZSI, Pune
  • Roy, MKD and Das, AK (2000) Taxonomy, ecobiology and distribution pattern of the brachyuran crabs of mangrove ecosystem in the Andaman Islands Occasional paper no 185 Records of the Zoological Survey of India ZSI, Calcutta 1-211 Available at - NCL, Pune
  • Chhapgar, BF (1957) Marine crabs of Bombay state Contribution No. 1 of the Taraporevala Marine Biological Station Marine Biological Station, Department of fisheries, Bombay 89 pp Available at - NIO, Goa
  • Alcock, A (1968) Materials for a carcinological fauna of India the Brachyura Oxyrhyncha The Baptist Mission Press 1 1-456 Available at - Pune University, Pune
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • Integrated Taxonomic Information System (ITIS) Available at - http://www.itis.gov.
  • Sankarankutty, C (1961) On Decapoda brachyura from the Andaman and Nicobar Islands 1. Families Portunidae, Ocypodidae, Grapsidae and Mictyridae Journal of the Marine Biological Association of India Marine Biological Association of India 3(1-2) 101-119 Available at - NIO, RC, Kochi
  • Simoes, N; Apel, M and David, AJ (2001) Intertidal habitats and decapod faunal assemblages (Crustacea: Decapoda) of Socotra Island, Republic of Yemen Hydrobiologia Kluwer Academic Publishers 449 81-97
  • Apel, M and Vassily Spiridonov, A (1998) Taxonomy and zoogeography of the portunid crabs (Crustacea: Decapoda: Brachyura: Portunidae) of the Arabian Gulf and adjacent waters Fauna of Arabia 17 159-331
  • Vazirani, TG (1973) Contributions to the study of aquatic beetles (Coleoptera). 12. On a collection of Dytiscidae from Gujarat with description of a new species Records of the Zoological Survey of India 67(1-4) 287-302
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Florida Museum of Natural History Available at - http://www.flmnh.ufl.edu/
  • DEB, M (1995) Crustacea: Brachyura Wetland ecosystem series 1: Fauna of Chilka Lake ZSI, Calcutta 345-366 Available at - NIO, Goa
  • Raj, PJS, Tilak, JL and Kalaimani, G (2002) Experiments in restoration of benthic biodiversity in Pulicat Lake, south India Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 44(1 & 2) 37-45 Available at - NIO, Goa
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at - http://tnenvis.nic.in
  • Sankarankutty, C (1966) On Decapoda Brachyura from the Gulf of Mannar and Palk Bay Proceedings of the Symposium on Crustacea Marine Biological Association of India, Mandapam Camp Part I 347-362 Available at - http://eprints.cmfri.org.in/2394/1/Article_32.pdf
  • Sealifebase Available at - http://www.sealifebase.org/
  • Soundarapandian,P; John Samuel,N; Ravichandran,S and Kannupandi,T (2008) Biodiversity of crabs in the Pichavaram Mangrove environment, South East Coast of India International Journal of Zoological Research CASMB, Parangipettai, Tamil Nadu 4(2) 113-118 Available at - http://scialert.net/qredirect.php?doi=ijzr.2008.113.118&linkid=pdf
  • Balasubramanyan, K (1994) Micro-invertebrate benthic fauna of Pichavaram mangroves Conservation of mangrove forest genetic resources: A training manual Available at - http://idl-bnc.idrc.ca/dspace/bitstream/10625/33954/1/118818.pdf
  • Roy, MKD and Nandi, NC (2005) Brachyuran diversity of coral reef ecosystems in India Proceedings of the National Seminar on Reef Ecosystem Remediation SDMRI Special Research Publication No.9 220-231 Available at - http://www.sdmri.org/reports/proceedings%202005%20-%20sdmri.pdf
  • Bandekar, PD; Neelkantan, K and Kakati, VS (2011) Biodiversity of Crabs in Karwar Mangrove environment West Coast of India Recent Research in Science and Technology Mohammed Abdul Muhsin Agriculture and Engineering Consultants 3(4) 01-05 Available at - http://recent-science.com/article/viewFile/5373/2799
  • Deb, M and Rao, GC (1993) A check-list of the brachyuran crabs (Crustacea: Decapoda)of Bay islands Journal Of The Andaman Science Association Andaman Science association, Port Blair 8(1-2) 25-34 Available at - NIO, Goa
  • Rao, GC; Rao, DV and Devi, K (1994) A faunal exploration of the North Reef Island sanctuary, North Andaman Journal of the Andaman Science Association Andaman Science Association, Port Blair 10(1&2) 68-81 Available at - NIO, Goa
  • Dineshbabu, AP; Durgekar, RN and Zacharia, PU (2011) Estuarine and marine decapods of Karnataka inventory Fishing Chimes Mr.J.V.H. Dixitulu 30 (10-11) 20-24 Available at - http://eprints.cmfri.org.in/7950/1/Dineshbabu-Fishing_Chimes_30(10%2611).pdf
  • James, PSBR ; Thomas, PA ; Pillai, CSG and Achari Kumaraswamy, GP (1969) ´╗┐Catalogue of types and of sponges, corals, polychaetes, crabs and echinoderms in the reference collections of the Central Marine Fisheries Research Institute Bulletin of Central Marine Research Institute CMFRI, Cochin 7 1-66 Available at - http://eprints.cmfri.org.in/567/1/Bulletin_7.pdf
  • Das, AK and Roy, MKD (1989) A general account of the mangrove fauna of Andaman and Nicobar islands Fauna of conservation areas Zoological survey of India 1-152 Available at - NIO, Goa
  • Roy, MKD and Nandi, NC (2008) Brachyuran biodiversity of some selected brackishwater lakes of India Proceedings of Taal2007: The 12th World Lake Conference 496-499 Available at - wldb.ilec.or.jp/data/ilec/wlc12/C-%20Biodiversity/C-20.pdf
  • Roy, MKD and Nandi NC (2007) Brachyuran diversity in coastal ecosystems of Tamil Nadu Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 4(2) 169-192 Available at - NIO,Goa
  • Roy, MKD and Nandi, NC (2008) Checklist and distribution of Brachyuran crabs of West Bengal, India Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 5(2) 191-214 Available at - NIO,Goa
  • Dholakia, AD (2004) Marine resources Fisheries and aquatic resources of India Daya publishing house 271-303 Available at - NIO, Goa
  • Roy, MK (2010) Diversity and Distribution of Crustacea Fauna in wetlands of West Bengal Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 7(2) 147-187 Available at - NIO,Goa
  • Sahu, MK; Murugan, M; Khan, SA and Kannan, L (2006) Crustacean resources of the coral reef environment of the little Andaman island, India Fishing Chimes 26(6) 56-59 Available at - NIO, Goa

Page last updated on:2012-01-11

Back to Search