Information concerning fish species that prey on ctenophores and other gelatinous plankters is presented for the first time from Argentine coastal waters (34–47 °S). Stomachs from 25029 individuals of 69 fish species were analyzed. At least 5% of the

The Rio de la Plata is a large-scale estuary located at 35°S on the Atlantic coast of South America. This system is one of the most important estuarine environments in the continent, being a highly productive area that sustains valuable artisanal and

The genus Mnemiopsis is comprised of a single species, Mnemiopsis leidyi A. Agassiz, 1865, that has recently made the transition from a distribu-tion limited to the Atlantic coasts of North and South America to an invasive range that includes the Black,

Parasites of planktonic cnidarians and ctenophores in the southern Atlantic Ocean are little known. The aim of this study was to describe three new metacercariae from jellyfish and ctenophores, and assess the importance of the gelatinous zooplankton as