Euphausiacea of the Southern Ocean

This dataset is a scanned copy of ANARE Research Notes 1. The text below is taken from the introduction.The aim of this handbook is to provide a general guide to the Euphausiacea of the Southern Ocean, in particular Euphausia superba Dana (Antarctic krill). It is designed for use by non-specialists, and for this reason a glossary is provided and all important features mentioned in the keys and the text are illustrated.For the purposes of this paper, the Southern Ocean is that body of water south of the southern continents (Australia, Africa and South America) and surrounding Antarctica. There are two major circumpolar surface water masses in the Southern Ocean, the boundary between them being the Antarctic Convergence. Few species of the Euphausiacea are found on both sides of this convergence, so separate keys have been prepared for the species on each side.The Euphausiacea consists of two families, the Euhphasiidae (85 species) and the Bentheuphausiidae (one species). It is an entirely marine order of the Crustacea, being generally shrimp-like in appearance. The Euphausiacea was previously lumped together with the order Mysidacea in a discarded group known as the Schizopoda. This associate is considered to be artificial, and these two orders are now placed in different super-orders.The document is available for download as a pdf from the URL given below.