Oithona tenuis
Rosendorn (1917)
Download a fact sheet for Oithona tenuis (PDF 239KB)
Taxonomy
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Class | Maxillopoda |
| Subclass | Copepoda |
| Order | Cyclopoida |
| Family | Oithonidae |
| Genus | Oithona |
| Species | tenuis |
Size
- Female: 1.11 - 1.25 mm
Distinguishing characteristics
- Very long and narrow prosome
- Rostrum is more attenuated than other Oithona
Male
- Very difficult to identify
Female
- Prosome elongate oval in dorsal view
- Cephalosome produced anteriorly into small rostral process in dorsal view
- Cephalosome in lateral view bent ventrally into sharply pointed rostrum
- Slender, greatest width at posterior end of cephalosome
- Pr length 3.2-3.5 width
- Pr:Ur 1.0-1.1
- Genital somite slender, only slightly swollen laterally
- Dorsal setae and inner medial apical setae on caudal rami thick
- Differentiated from other large Oithona as is long and narrow and the rostrum more attenuated
Distribution
Ecology
References
- Mckinnon pers. comm.
- Nishida, S. (1985). "Taxonomy and distribution of the family Oithonidae (Copepoda, Cyclopoida) in the Pacific and Indian oceans." Bulletin of the Ocean Research Institute, University of Tokyo. Tokyo. no. 20: 1-167.
- Nishida, S. (1986). "A new species of Oithona (Copepoda, Cyclopoida) from the neritic waters of Australia." Journal of Plankton Research 8(5): 907-915.