Planktic ostracodes from the antarctic and subantarctic collected by the 1989–1990 Italian Antarctic Expedition
Abstract
Eleven species of planktic Ostracoda were collected by the Italian Antarctic Expedition of 1989-1990 from the region south of New Zealand in the Southern Ocean to the Ross Sea, Antarctica. Of these species, only Proceroecia rivoltella n.sp. (described herein) and Gigantocypris muelleri were not recorded by Deevey (1982) from much the same area. Depth distributions are given for the more commonly encountered taxa, Alacia belgicae, A. hettacra, Boroecia antipoda, Metaconchoecia skogsbergi and M. isocheira. Much of the total Ostracoda density at each station is due to the dominance of A. hettacra at lower latitudes and A. belgicae at higher latitudes. The near identity with Deeveys records confirms that the planktic ostracodes of far southern latitudes are now reasonably well known, at least to depths less than 1000 m.
