Rhincalanus rostrifrons
Dana (1849)
Download a fact sheet for Rhincalanus rostrifrons (PDF 319KB)
Taxonomy
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Class | Maxillopoda |
| Subclass | Copepoda |
| Order | Calanoida |
| Family | Rhincalanidae |
| Genus | Rhincalanus |
| Species | rostrifrons |
Size
- Female: 2.79 - 3.80 mm
- Male: 2.41 - 2.95 mm
Distinguishing characteristics
- Distinct form of anterior cephalosome with dorsally visible rostral filaments
- Form of female P5
Male
- Right P5 uniramous, 3-segmented with the terminal segment extended into a curved spine
- Left P5 biramous with a 1-segmented exopodite bearing a curved terminal spine, a 2-segmented endopodite, the 1dt segment longer than the 2nd, the endopodite around the same length as the exopodite
Female
- Extremely extended point on anterior Ce, with prominent rostral filaments which protrude laterally, visible in dorsal view
- A1 around 1.5x as long as body
- P5 3-segmented, without seta on 2nd segment, the terminal segment extended into a stout curved point, with an internal toothed spine
Distribution
Ecology
References
- 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.