Corycaeus crassiculus
Dana (1849)
Download a fact sheet for Corycaeus crassiculus (PDF 487KB)
Taxonomy
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Class | Maxillopoda |
| Subclass | Copepoda |
| Order | Cyclopoida |
| Family | Corycaeidae |
| Genus | Corycaeus |
| Species | crassiculus |
Size
- Female: 1.68 - 2.00 mm
- Male: 1.42 - 1.75 mm
Distinguishing characters
- Proportional length of urosome somites and caudal rami
- Female genital somite overlaps anal somite at dorsal margin
- Male with long caudal rami compared to other male Corycaeus apart from C. speciosus which has narrower points on prosome
Male
- Cephalosome fused with 1st pedigerous somite
- Prosome points extend to middle of genital somite
- Genital somite1.5 times as long as wide
- Anal somite little wider at proximal than distal margin
- Anal somite 2 times as long as wide at the distal margin
- Caudal rami almost equals length of genital somite
- Caudal rami 8 times as long as wide
Female
- Cephalosome separate from 1st pedigerous somite
- Prosome 2 times as long as urosome
- Prosome points extend to distal magin of genital somite
- Genital somite overlaps anal somite at dorsal margin
- Anal somite little wider at proximal than the distal margin
- Caudal rami 0.5 ¨C 0.8 times as long as rest of urosome
- Caudal rami 6 times as long as wide
Distribution
- Epipelagic
- Coastal and oceanic
- Indo-Pacific region and Southern Africa
Ecology
- Visual predators using raptorial appendages to capture small prey
- Little is known about the ecology of this species
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.
- Dahl, M. (1912). Die Copepoden der Plankton-Expedition. I. Die Corycaeinen. Mit Berucksichtigung aller bekannten Arten bearb. (Ergebnisse der Plankton-Exp. Bd II. G. f. 1.).¡¡¡¡Pages: (iv + 136) ¡¡
- Tanaka, O. (1957[1959]). On copepoda of the family Corycaeidae in Japanese waters 1957. Contx Dep Fish Kyushu Univ 3