Acartiidae Sars G.O, 1903
Copepods of the family Acartiidae are representatives of Calanoida. Common and abundant in marine zooplankton worldwide, the 86 recognized species of Acartiidae are grouped into 5 genera. They occur in neritic waters covering a wide latitudinal range. Adult body lengths range between 600 μm and 2700 μm, a size that is effectively captured by meso-zooplankton nets of 200 μm mesh size. Juveniles and nauplii, however, are smaller; they can only be quantitatively captured by using narrower mesh sizes. Adults show sexual dimorphism recognizable only after the first instars of the copepodite stage.
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