Home Introduction What is an ostracod? World species list Southern Ocean list About the authors Bibliography Acknowledgements Links Last updated 14 March 2008 Southern Ocean list > Conchoecia hyalophyllum > Notes Conchoecia hyalophyllum Drawings   Maps Download species PDF Conchoecia hyalophyllum Claus, 1890 Records: 109 This is a species mainly of temperate waters that appears to be advected into polar seas particularly in summer months. In the Southern Ocean it has seldom been reported from south of the Subtropical Front. Its early juvenile stages occur at shallow mesopelagic depths and do not undergo diel vertical migrations. The adults live at somewhat deeper daytime depths and undertake diel vertical migrations to the base of the seasonal thermocline, occasionally moving up into the wind-mixed layer. N. Atlantic n Mean mm s.d. Range mm Females 91 1.66 0.076 1.50-1.86 Males 126 1.58 0.045 1.44-1.66 A-1 555 1.17 0.047 1.04-1.28 A-2 1260 0.79 0.028 0.70-0.86 A-3 650 0.57 0.019 0.52-0.62           Southern Ocean specimens fall within the size ranges