Paracalanus denudatus   Sewell,  1929 (Copepod)
Organism information awaits expert curation
Class: Maxillopoda

Size (female): Length 0.64 mm

The proportional lengths of the cephalothorax and abdomen are as 53 to 16; the abdomen is thus contained 3.31 times in the length of the anterior region of the body. The head and 1st thoracic segment are fused and the dorsal profile exhibits a slight hump about the middle of the fused mass. The anterior region of the body is, however slightly more slender in the present species and the fused mass of the cephalon and 1st thoracic segment is contained only 1.4 times in the length of the whole anterior region. The forehead is uniformly rounded and the rostral filaments are directed downwards and backwards. Thoracic segments 4 and 5 are fused and the posterior thoracic margin is rounded. The furcal rami are nearly three times as long as broad, the proportion of length to breadth being 20 to 7. The inner furcal seta is delicate and is only about one-fourth the length of the next seta. Segments 1, 2, 8, and 8 of the 1st antenna being fused together. The appendage reaches beyond the tip of the furcal ramus by approximately the extent of the last segment. The length of the end segment of the antenna is much longer. The segments 10 to 23 all bear rows of minute spinules, running longitudinally. The two terminal segments are devoid of spines. The row of leaf-like spines present on the posterior aspect of the 2nd joint of the exopod of the 4th swimming leg.

Synonym (s)

Common Name (s)
Economic Importance and Threats

Habitat:  Coastal


• Andaman and Nicobar Islands, Nicobars, Nankauri Harbour INDIA
• Andaman and Nicobar Islands, Macpherson Strait INDIA
• Gujarat, Saurashtra Coast (Lat: 20.84) (Long: 68.83) INDIA
• Gujarat, Saurashtra Coast (Lat: 22.50) (Long: 70.33) INDIA

Literature Source(s)
  • Madhupratap, M and Haridas, P (1986) Epipelagic calanoid copepods of the Northern Indian Ocean Copepod 105-117 Available at - NIO, RC Kochi
  • Sewell, RBS (1999) The copepoda of Indian seas Biotech Books, Delhi, India 407 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Patel, MI (1975) Pelagic copepods from the inshore waters off Saurashtra Coast. Journal of the Marine Biological Association of India Marine Biological Association of India, Cochin 17(3) 658-663 Available at - NIO, Goa

Page last updated on:2011-02-02

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