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Calanopia minor

Scott A. (1902)

Download a fact sheet for Calanopia minor (PDF 310KB)

Taxonomy

Phylum Arthropoda
Subphylum Crustacea
Class Maxillopoda
Subclass Copepoda
Order Calanoida
Family Pontellidae
GenusCalanopia
Speciesminor

Size

  • Female: 1.24 鈥 1.40 mm
  • Male: 1.11 鈥 1.18 mm

Distinguishing characteristics

  • Form of urosome somites (female: urosome 2 somite distinctly longer than genital somite, male: no small tooth on right border of urosome somite 2)
  • Form of P5

Male

  • A1 extends to end of 3rd pedigerous somite
  • Right A1 geniculate
  • Basis of left P5 is swollen towards proximal end of inner margin, swollen part produced into a small tooth-like spine
  • Basis of right P5 exopodite is also swollen
  • Flattened joint of P5 1st exopodite segment, with a seta on inner margin, outer thumb short and naked
  • Claw-like P5 2nd segment is spoon shaped and without any teeth, but with 2 inner marginal seta
  • Urosome somite 2 has no spiny process

Female

  • Rostrum pointed
  • Last prosome somite produced on each side into acute spine
  • P5 is quite symmetrical with 4 segments, distal segment terminates in long spine and 1 short spine, with a further spine on outer mid segment
  • Urosome 2-segmented, 2nd somite distinctly longer than the genital somite

Distribution

  • Coastal, oceanic
  • Subtropical and tropical
  • Indian and Pacific Oceans

Ecology

  • Sometimes found living in the neustonic layer
  • This copepod has been reported as part of several plankton communities, but little is known about its ecology

References

  • Bradford-Grieve, J. M., (1999). The marine fauna of New Zealand: pelagic calanoid copepoda: Bathypontiidae, Arietellidae, Augaptilidae, Heterorhabdidae, Lucicutiidae, Metridinidae, Phyllopodidae, Centropagidae, Pseudodiaptomidae, Temoridae, Candaciidae, Pontellidae, Sulcanidae, Acartiidae, Tortanidae. National Institute of Water and Atmospheric Research, Wellington, New Zealand.
  • Conway DVP, White, R.G., Hugues-Dit-Ciles, J., Gallienne, C.P. and Robins, D.B. (2003). Guide to the coastal and surface zooplankton of the south-western Indian Ocean, Vol Occasional Publications No. 15. Marine Biological Association of the United Kingdom.
  • Chen Q. C. & Zhang S. Z, 1965. The planktonic copepods of the Yellow Sea and the East China Sea. I. Calanoida. Studia mar. sin., 7: 20-131. (Chinese with English summary).
  • Razouls C., de Bov茅e F., Kouwenberg J. et Desreumaux N., 2005-2009. Diversity and Geographic Distribution of Marine Planktonic Copepods. Available at
  • Tanaka O., 1964. Two small collections of copepods from the Antarctic. Scient. Rep. Jap. Antarct. Res. Exped., (E) 22: 1-20.