Paracalanus arabiensis   Kesarkar & Anil,  2010 (Copepod)
Organism information awaits expert curation
Class: Maxillopoda

(A) Habitus, dorsal view; (B) habitus, lateral view; (C) rostrum, lateral view; (D) rostrum, dorsal view

Size: Total body length 0.60 mm, broad and short.

Forehead uniformly rounded, rostrum short, solid, rounded at tip. Cephalosome incorporating first pedigerous somite, slight demarcation between fourth and fifth pedigerous somites. Urosome 4-segmented. Genital somite broad, rounded. Anal somite longer than second and third urosomites. Antennule 25-segmented, extending to posterior margin of genital somite. Antenna biramous; coxa and basis clearly separate, bearing 1 and 2 setae respectively. Exopod 7-segmented, slightly longer than endopod. Endopod 2-segmented, first segment with 2 setae, second segment bilobed, with proximal and distal lobes bearing 8 and 6 setae respectively.
Mandible with cutting edge of gnathobase bearing 9 cuspidate teeth and 1 seta. Palp biramous; basis with 4 setae; exopod 5-segmented. Endopod 2-segmented, bearing 4 setae on proximal segment and 11 setae on distal segment. Maxillule praecoxal arthrite with 13 setae. Coxa with 3 setae on endite; epipodite with 8 setae. Basis with 4 setae on proximal endite and 5 setae on distal endite; basal exite with 2 setae. Exopod bearing 11 lateral setae. Endopod 3-segmented.
Maxilla praecoxa bearing 2 endites; proximal endite with 6 setae, distal with 3 setae; coxa with 2 endites each armed with 3 setae; basis with a single endite bearing 4 setae and 1 seta laterally. Endopod 3-segmented with setal formula of 1, 1, 2. Maxilliped praecoxa and coxa apparently separate; praecoxa with 1 seta; coxa bearing 2, 3 and 4 setae representing endites; basis bearing 3 setae. Endopod 6-segmented. Swimming legs with 3-segmented exopods.
First segment slightly robust; second segment bearing 2 terminal spines of unequal length, inner spine twice the length of outer one with a row of six small teeth along its edge. Two small, stiff spines of equal length protrude in between the terminal spines.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Goa, Mandovi and Zuari Estuary (Lat: 15.41) (Long: 73.8) INDIA (Record: 05/2005, 12/2005, 09/2006)
• Maharashtra, Mumbai INDIA
• Arabian Sea
• Maharashtra, Mumbai, Port (Lat: 18.9) (Long: 72.66) INDIA

Literature Source(s)
  • Kesarkar, KS and Anil, AC (2010) New species of Paracalanidae along the west coast of India: Paracalanus arabiensis Journal of the Marine Biological Association of the United Kingdom Marine Biological Association of the United Kingdom 90(2) 399–408 Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Gaonkar, CA; Krishnamurthy, V and Anil, AC (2010) Changes in the abundance and composition of zooplankton from the ports of Mumbai, India Environ Monit Assess Springer 168 179–194 Available at -

Page last updated on:2011-01-28

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