Kellicottia bostoniensis (Rousselet, 1908) is spreading in Brazil: new occurrence in water reservoir in Campos Gerais (Parana)

Kellicottia bostoniensis is a natural planktonic species from North America. This has already been identified as alien/invasive in Europe, South America and Asia, having a relationship between the size of the rotifer and the trophic states, depths, and pH values of the water body. This work aims to describe a new occurrence of K. bostoniensis in a dam for recreational activities and urban water supply in southern Brazil. Sampling was carried out using oblique hauling, with a 68 mu m cylindrical -conical net close to buildings in the water supply catchment area and the hydroelectric plant at the Alagados Reservoir. The occurrence of K. bostoniensis in this area of the dam described as having a lentic environment dominance, and subject to Cyanophyceae blooms raises the alert for the arrival of this rotifer in Campos Gerais. In addition to encouraging the need for studies on the impact of this species on native zooplankton and its potential to be an indicator species of aquatic environments.