Freshwater Bryozoa in Argentina: A Novel Record in a RAMSAR Wetland

This study focuses on freshwater bryozoans (Ectoprocta), particularly Phylactolaemata, which reproduce sexually and asexually, either by clonal budding or through encapsulated dormant structures called statoblasts. These structures are crucial for the taxonomic identification of bryozoans. Current knowledge about taxonomy, systematics, physiology, ecology, and biogeography of freshwater bryozoans in South America is scarce. In Argentina, the diversity and distribution of bryozoans are poorly known, with most studies focusing on marine species. The findings of Plumatella emarginata Allman, 1844 in northeastern Argentina represents the first record of a Phylactolaemata in a RAMSAR site in this country. The study area includes Totorá Lagoon and Iberá Lagoon in the Province of Corrientes, northeastern Argentina, both crucial to the local and regional ecosystem. Water physicochemical parameters were measured. This study highlights the need for further research on freshwater bryozoans in South America to enhance our understanding of these ecologically significant organisms.