Paracalanus aculeatus f. major   Sewell  (Copepod)
Organism information awaits expert curation
Class: Maxillopoda

Image copyrights: Biotech Books

a. The genital segment of the abdomen and the 5th pair of legs, b. The maxilliped, C. The 1st swimming leg, d. The 2nd swimming leg, e. The 3rd swimming leg, f. The 4th swimming leg

Size (female): length 0.89-0.99 mm

The proportional length of the cephalothorax and abdomen are as 36 to 11, so that the abdomen is contained 3.27 times in the length of the anterior region of the body. The cephalon and 1st thoracic segment are fused and their combined length forms two-thirds of the total length of the cephalothorax. The body is slightly humped. The posterior thoracic margin is rounded and is fringed with a number of long and delicate hairs.
The 1st antenna reaches back to beyond the tip of the furcal ramus by about the extent of the last segment. There are twenty-three free joints in the appendage. Segments 1 and 2 and 8 and 9 being fused respectively. Rows of minute spinules are seen on the segments of the antenna.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Andaman and Nicobar Islands, Nicobars, Nankauri Harbour INDIA (Record: 11/1922, 01/1923)

Literature Source(s)
  • 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 -

Page last updated on:2009-07-28

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