Clausocalanus laticeps
Farran (1929)
Download a fact sheet for Clausocalanus laticeps (PDF 347KB)
Taxonomy
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Class | Maxillopoda |
| Subclass | Copepoda |
| Order | Calanoida |
| Family | Clausocalanidae |
| Genus | Clausocalanus |
| Species | laticeps |
Size
- Female: 1.25 - 1.67mm
- Male: 1.01 - 1.10mm
Distinguishing characteristics
- Form of seminal receptacle, ventral lobe large, dorsal lobe slender and finger like
- Prosome : Urosome ratio
- Large vaulted ewhale-likef head
Male
- Rostrum in lateral view knob like and protruding ventrally
- P5 longer and genital pore on left
- P5 left longer than urosome
- Right P5 3 segmented
- Caudal rami more than 1.60 times as long as wide
Female
- Large vaulted ewhale-likef head in lateral view, rounded in dorsal view
- Rostrum in lateral view short, usually straight, directed ventroposteriad
- Terminal points of P5 segment 3 not spinulate
- Prosome:urosome ratio 2.51-2.97:1
- Ventral view of genital somite non protruberant
- Genital somite greater than 1.5 times as long as somite 3
- Ventral lobe of seminal receptacle large in lateral view, seminal receptacle dorsal lobe slender, finger like and directed dorsally or ventrodorsally
- Dorsal and ventral lobes visible in ventral view
Distribution
- Antarctic-subantarctic
Ecology
References
- Bradford-Grieve, J. M., E. L. Markhaseva, et al. (1999). Copepoda. South Atlantic Zooplankton. D. Boltovskoy. Leiden, The Netherlands, Backhuys Publishers. 1: 869-1098.
- Frost B, Fleminger A (1968). A revision of the genus Clausocalanus (Copepoda: Calanoida) with remarks on distributional patterns in diagnostic characters. Bulletin of Scripps Institution of Oceanography 12:1-235
- Guglielmo and Ianora (1996)