New record for the distribution of the colonial hydroid Cordylophora caspia (Pallas, 1771) (Cnidaria: Hydrozoa) in Argentina

Abstract

Cordylophora caspia is a colonial, athecate hydroid inhabiting both in freshwater and brackish habitats. Its global distribution is in part due to its ability to tolerate a wide range of salinity. It is considered an invasive species and its control is widely studied because of the industrial and ecological problems it causes in many environments. We report for the first time the occurrence of this hydrozoan in Nahuel Rucá Lake (Buenos Aires province, Argentina) with some notes on its internal and external morphology.

Environmental DNA biomonitoring revealed species diversity of Cnidarian and Poriferan across Jakarta Bay and Seribu Islands National Park

“…This animal was rst discovered outside its native territory in North America in 1870 on the Schuykill River, Pennsylvania. The others regions are Africa (Egypt and Sudan) (Boulenger 1908;Rzoska 1949), Asia (China) (Roch 1924), Europe (France, Germany, Hungary, Italy, Luxenbereg, Netherlands, Poland, Portugal and Spain) (Ambrogi et al 1983;Chainho et al 2015;Conde et al 2013;Correia et al 2012;Escot et al 2003;Gruszka 1999;Marchand 1972;Massard and Geimer 1987;Musko et al 2008;Roos 1979), North America and South America (Argentina, Chile, Panama, USA) (Deserti et al 2015;Galea et al 2007;Jones and Rützler 1975;Richardson and Hammond 2016;Smith et al 2002;Wintzer et al 2011), Oceania ( Australia, New Zealand, Tasmania) (Roch 1924). This species has a high tolerance for aquatic environments, such as temperature (8-30 o C), salinity (0-40 ppt) (Folino-Rorem et al 2009), and lives on hard submerged water substrates such as rock surfaces, shells, timber, and other infrastructure.…”