BAFFICO gustavo Daniel
First record of the invasive algae Didymosphenia geminata in the Lake Nahuel Huapi: Argentina, Patagonia
BEAMUD, G.; BAFFICO, G.; PEDROZO F.; DIAZ, M.
REVISTA CHILENA DE HISTORIA NATURAL
SOC BIOLGIA CHILE
Lugar: Santiago de Chile; Año: 2013 vol. 86 p. 493 - 496
The benthic diatom Didymosphenia geminata (Lyngbye) M. Schmidt is a very aggressive invasive species found in rivers and streams in different parts of the world. It has become a major concern for its tendency to form conspicuous blooms in oligotrophic aquatic systems with potential for detrimental impacts on recreational fishing. The first blooms of D. geminata in South America were found in May of 2010 in the River Futaleufú (Los Lagos Region, Chile) (CIEP 2010). Subsequently, the species was detected upstream, in the River Futaleufú (Chubut Province, Argentina), in August of 2010 (Sastre et al. 2013). In November of 2011 the diatom was recorded in the River Manso (Río Negro Province, Argentina) (Alemanni M, comm. pers. 2011), and in Chimehuin and Collon Cura rivers (Neuquén Province, Argentina) (Abelli Bonardi et al. 2012). Given its explosive development and the notable appearance in Lake Nahuel Huapi during the austral summer of 2013, our aim was to document the first record for a large (557 km2) lentic waterbody in the Andean Patagonia region.