Protochondracanthus alatus   (Heller,  1865) (Copepod)
Organism information awaits expert curation
Class: Maxillopoda

Image copyrights: Taylor and Francis

A) Dorsal habitus of adult female; B) Dorsal habitus of adult male

Size: Female 4.04 to 4.71 mm; male 269 ┬Ám

Female: Body elongated. Head composed of cephalosome only and protruded posterolaterally into a small process. A pair of vermiform processes in oral region originated at bases of maxillae. First pediger transformed into a short neck, bearing a pair of tripartite, lateral processes on both sides. Remaining pedigers fused into a long cylindrical trunk, bearing a pair of long, lateral processes in front, another pair of short posterior processes at end, and a vermiform process at midposterior end. Both genital double somite and abdomen distinctly wider than long. Caudal ramus a spiniform process armed with three setae and a small tubercle. Egg sac longer than body.
Antennule with modified, fleshy basal portion bearing a vermiform posteroventral process and a small knob-like setiferous terminal process; armature being 11 on basal portion and ten on terminal process. Antenna two-segmented; first segment small and unarmed, second segment a sharp, recurved hook with a small, medial knob in basal region. Labrum with smooth posterior margin. Mandible two-segmented; terminal blade with a row of 36 teeth on convex (inner) side. Maxillule tipped with a lobe and two short setae. Maxilla two-segmented; basal segment large but unarmed, distal segment bearing one small, simple seta, one large seta with hyaline tip in basal region and a row of about 60 fine spinules on terminal process. Maxilliped slender and three-segmented; first segment largest but unarmed, second segment with spinules in terminal and subterminal regions, and third segment drawn out into a pointed process with two rows of spinules in basal region in addition to a single, subterminal spinule. Long, lateral process in anterior region of trunk tipped with four tubercles with each bearing a spinule at tip.

Male: Body with swollen cephalosome. First two pedigers separated, but remaining pedigers fused with genitor-abdominal somites. Caudal ramus a short, spiniform process with six short setae in basal region and spinules in distal region. Antennule filiform, armature being 1-1-2-3-8. Antenna two-segmented; terminal hook with a small outer knob in basal region. Mandible with a row of about 25 teeth on convex margin of terminal blade. Maxillule tipped with a blunt knob and two setae. Maxilla as in female except for smaller number of teeth (about 25) on terminal process. Maxilliped constructed as in female only stubbier.

Parasitic on the gill filaments of Psettodes erumi (fish).

Synonym (s)
Chondracanthus alatus Heller, 1865
Protochondracanthus psettodes Kirtisinghe, 1950

Common Name (s)
Economic Importance and Threats



• Maharashtra, Mumbai (Lat: 18.98) (Long: 72.83) INDIA
• Kerala INDIA (Record: 26/01/1994, 20/07/1994, 25/10/1994)

Literature Source(s)
  • Tikader, BK and Gajbe, UA (1973) A new species of the genus Plator Simon (family: Platoridae) from India Current Science 42(23) p 829
  • Ho, JS; Kim, IH and Kumar, AB (2000) Chondracanthid copepods parasitic on flatfishes of Kerala, India Journal Of Natural History Taylor and Francis 34(5) 709-735 Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

Page last updated on:2010-07-15

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