The population dynamics, distribution, abundance and feeding behavior of Metridia gerlachei Giesbrecht were studied in the western Bransfield Strait in the period from mid-December 1986 through late March 1987. The greatest abundance of all copepodite

Diel vertical migration and feeding cycles of adult female Metridia gerlachei in the upper 290 m of a 335-m water column were measured during a total of 65 h in two periods of early summer (Dec 20–21 and Dec 25–26, 1991). Samples collected in eight

Morphometric analysis of cephalothorax length in successive growth stages of Calanoides acutus and Metridia gerlachei from three regions of the western Antarctic, i.e. Drake Passage, Bransfield Strait and Croker Passage (Antarctic Peninsula), indicated