Clausocalanus arcuicornis   (Dana,  1849) (Copepod)
Organism information awaits expert curation
Class: Maxillopoda

Image copyrights: Observatoire Oceanologique de Villefranche sur Mer

Size: Length: female 1.08-1.62 mm; male 0.97-1.20 mm.

Female: Rostrum in lateral view short, bifurcated, thick at its base, usually straight or slightly curved and directed ventrally. Genital segment in lateral view straight or, more often slightly concave in the region of the seminal receptacle; 1.5 times as long as urosome segment 3. Terminal points of segment 3 of leg 5 bifurcated, sometimes with tiny spinules on inner and outer margins.

Male: Second urosome segment as long as the two following segments together. Rostrum in lateral view knob-like and protruding ventrally. Right leg short, usually 3-segmented; left leg robust, longer than urosome, armed distally with long slender straight setae.

Synonym (s)
Clausocalanus arcuicornis A. Scott, 1909
Clausocalanus arcuicornis Sharpe, 1911
Clausocalanus arcuicornis Wolfenden, 1911
Clausocalanus arcuicornis T. Scott, 1912
Clausocalanus arcuicornis Sewell, 1912
Clausocalanus arcuicornis Sewell, 1913
Clausocalanus arcuicornis var. plumulosus Sewell, 1913
Clausocalanus arcuicornis Sewell, 1914
Clausocalanus arcuicornis Fruchtl, 1920
Clausocalanus arcuicornis Fruchtl, 1923
Clausocalanus arcuicornis Fruchtl, 1924
Clausocalanus arcuicornis G. O. Sars, 1925
Clausocalanus arcuicornis Farran, 1926
Clausocalanus arcuicornis Gurney, 1927
Clausocalanus arcuicornis Farran, 1929
Calanus arcuicornis Dana, 1849
Clausocalanus mastigophorus (Claus, 1863)
Calanus mastigophorus Claus, 1863
Eucalanus mastigophorus (Claus, 1866)

Common Name (s)
Economic Importance and Threats

Habitat:  Pelagic


• Lakshadweep INDIA (Record: 1910-1925)
• Kerala, Off Trivandrum Coast INDIA
• Andaman and Nicobar Islands, Barren Island INDIA (Record: 04/2006)
• Bay of Bengal INDIA
• Arabian Sea INDIA
• Kerala, Off Kochi (Lat: 10) (Long: 68.05) INDIA (Record: 14/11/1983-17/11/1983)
• Kerala, Off Kochi (Lat: 11.5) (Long: 73.11) INDIA (Record: 14/11/1983-17/11/1983)
• Arabian Sea (Lat: 16) (Long: 62) INDIA (Record: 12/09/1991-23/09/1991) (Depth: 200-500 mts)
• Arabian Sea (Lat: 23) (Long: 73) INDIA (Record: 12/09/1991-23/09/1991) (Depth: 200-500 mts)
• West Coast (Lat: 15) (Long: 69) INDIA (Record: 12/09/1986-26/09/1986)
• West Coast (Lat: 19) (Long: 73) INDIA (Record: 12/09/1986-26/09/1986)
• Andhra Pradesh, Lawsons Bay INDIA

Literature Source(s)
  • (2001) Sanctuary Asia natural history species: Species checklist: Birds Sanctuary Asia Sanctuary Magazine Available at -
  • Conway, DVP; White, RG; Hugues-Dit-Ciles, J; Gallienne, CP and Robins, DB (2003) Guide to the coastal and surface zooplankton of the south western Indian Ocean Occasional publication no 15 Marine Biological Association of the United Kingdom Occasional Publication of the Marine Biological association of the United Kingdom 354 pp Available at -
  • Vannini, M (1982) Notes on Somalian species of the genus Hypocolpus (Decapoda, Brachyura, Xanthidae) with description of a new species Crustaceana (Leiden) 42 (1) 101-105 Available at - Zoological Records
  • Madhupratap, M and Haridas, P (1986) Epipelagic calanoid copepods of the Northern Indian Ocean Copepod 105-117 Available at - NIO, RC Kochi
  • Sazhinar, LI (2006) Breeding, Growth Rates, and Production of Marine Copepods Hyderguda Universities Press, Hyderabad 1-147 Available at - NIO, RC Kochi
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Observatoire océanologique de Villefranche sur mer Available at -
  • Sewell, RBS (1999) The copepoda of Indian seas Biotech Books, Delhi, India 407 pp Available at - NIO, Goa
  • Saraswathy, M (1966) Pelagic Copepods from the inshore waters Off Trivandrum Coast Proceedings of Symposium on Crustacea Marine Biological Association of India, Mandapam Camp Part-I 74-106 Available at - NIO, Goa
  • Pillai, HUK; Jayaraj, KA; Rafeeq, M; Jayalakshmi, KJ and Revichandran, C Mesozooplankton distribution near an active volcanic island in the Andaman Sea (Barren Island) Environmental Monitoring and Assessment Springer Available at -
  • Fernandes, V (2008) The effect of semi-permanent eddies on the distribution of mesozooplankton in the central Bay of Bengal Journal of Marine Research Sears Foundation for Marine Research 66 465–488 Available at - NIO,Goa
  • Fernandes, V and Ramaiah, N (2009) Mesozooplankton community in the Bay of Bengal (India): spatial variability during the summer monsoon Aquatic Ecology Springer 43(4) 951-963 Available at -
  • Padmavati, G; Haridas, P; Nair, KKC; Gopalakrishnan, TC; Shiney, P and Madhupratap, M (1998) Vertical distribution of mesozooplankton in the central and eastern Arabian Sea during the winter monsoons Journal of Plankton Research Cambridge University Press 20 343-354 Available at -
  • Madhupratap, M and Haridas, P (1990) Zooplankton, especially calanoid copepods, in the upper 1000m of the south-east Arabian Sea Journal of Plankton Research Oxford University Press 12 305-321 Available at -
  • Goswami, SC and Srivastava, Y (1996) Zooplankton standing stock, community structure and diversity in the northern Arabian Sea Proceedings of the Second Workshop on Scientific Results of FORV Sagar Sampada Department of Ocean Development, New Delhi, India 127-137p Available at -
  • Madhupratap, M; Nair, SRS; Haridas, P and Padmavati, G (1990) Response of zooplankton to physical changes in the environment: coastal upwelling along central west coast of India Journal of coastal research Coastal Education and Reserch Foundation 6 413-426 Available at -
  • Ganapati, PN and Shanthakumari, K (1961) The systematics and distribution of planktonic copepods in the Lawson's bay, Waltair Journal of the marine biological association of India The marine biological association of India 3(1&2) 6-18 Available at - NIO, Goa

Page last updated on:2011-05-19

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