The presence of the two exotic zooplankton species (Kellicottia bostoniensis and Mesocyclops ogunnus) in lakes of the Middle River Doce is discussed in the present work. K. bostoniensis was registered in Lakes Jacaré, Carioca and Águas Claras while M. ogunnus was restricted to the littoral zone of Lake Dom Helvécio. These zooplankton species may have been introduced in these environments by human action. Despite the low densities registered for both species, the monitoring of the invasion process is necessary to evaluate possible impacts on the zooplankton community structure in the lakes of Middle River Doce.
exotic species; Copepoda; Rotifera; Kellicottia bostoniensis; Mesocyclops ogunnus
