Pseudodiaptomus dauglishi   Sewell,  1932 (Copepod)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Maxillopoda
Order:Calanoida
Family:Pseudodiaptomidae

Description
Size: Female 1.03 mm, male 0.877-0.915 mm.

In female the proportional lengths of the cephalothorax and abdomen are as 36 to 18.5, so that the abdomen is contained almost exactly twice in the length of the anterior region of the body. The head is somewhat sharply rounded anteriorly. The head and 1st thoracic segment are fused, as also are segments 4 and 5, though a line of demarcation between these last two portions can clearly be seen crossing the dorsal aspect. On either side of the middle line and situated on the line of demarcation between segments 4 and 5 is a sharp backwardly directed spine that from its situation must rightly belong to the 4th thoracic segment; the posterior thoracic margins are symmetrical are symmetrical and are produced backwards into sharp points.

In male the proportional lengths of the cephalothorax and abdomen are as 123 to 67, so that the abdomen is contained 1.82 times in the length of the anterior region of the body. The abdomen consists of five segments and the furcal rami, the 1st segment bears a transverse row of minute spines on each side. Segments 2 and 3 are armed with spines along their posterior margins as in the female, but the spines are larger in the present sex. A in other members of the genus the 1st antenna on the left side resembles that of the female, while the right antenna is modified to form a grasping organ.

Synonym (s)

Common Name (s)
Economic Importance and Threats

Ecology

Biogeography


• INDIA

Literature Source(s)
  • (2001) Invertebrate zoology collections Available at - http://goode.si.edu/mcs/iz/Query.php
  • 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 - http://www.marinespecies.org

Page last updated on:2011-03-15

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