Oithona setigera
Distribution:
Temperate, subtropical, and tropical regions.
Habitat:
Epipelagic to mesopelagic.
Size:
Females 1.1-2.0 mm; Males 0.5-1.2 mm Total Length
Diet:
Probably carnivorous, feeding on motile phytoplankton and microzooplankton.
Predators:
Predatory zooplankton, fish.
Useful Facts or Characters:
Pointed rostrum visible in dorsal view.
Natural History:
Oithona setigera lacks the tuft of fine hairs on the ventral side of the genital segment that is found in O. plumifera (which also occurs in the San Diego region).
References:
http://www.marinespecies.org/copepoda/aphia.php?p=taxdetails&id=106655
http://species-identification.org/species.php?species_group=zsao&menuent...
http://copepodes.obs-banyuls.fr/en/fichesp.php?sp=1802
Nishida, S. (1985) Taxonomy and distribution of the family Oithonidae (Copepoda, Cyclopoida) in the Pacific and Indian Oceans. Bulletin of the Ocean Research Institute of the University of Tokyo 20: 1-167.