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 > Obtusoecia antarctica > Notes Obtusoecia antarctica Drawings   Maps Download species PDF Obtusoeciaantarctica (Müller, G.W., 1906) Records: 213 This species was originally described as a subspecies of Conchoecia obtusataSars by Müller 1906. It was raised to a full species by Martens (1979), who also established the genus separating the two species from the genus Spinoecia that had been set up by Poulsen (1973). The latitudinal range of its distribution in the Southern Ocean is a replica of its sibling species O. obtusata in the North Atlantic (which is absent from the North Pacific). It also appears to fill a similar ecological niche, in being a shallow mesopelagic species most abundant at latitudes of 35° to 50°S, although there are many records of it occurring to the south of the Polar Front. A full description of this species is being prepared.   n Mean mm s.d. Range mm Female 94 1.65 0.067 1.48-1.78 Male 88 1.26 0.039 1.16-1.34 A-1 3 1.39 1.393 1.36-1.44 A-2 55 1.04 0.034 0.94-1.16 A-3 11 0.75 0.027 0.70-0.80