“…Both groups act as definitive hosts, while crustaceans, fishes, and cephalopods are intermediate hosts (Hoberg, 1989). This parasite has been recorded in various birds of the order Charadriiformes (Alcidae, Stercorariidae, Laridae) from Europe (Roca et al, 2001;Santoro et al, 2011;Haukisalmi, 2015;Parejo et al, 2015), Asia (Uchida et al, 2005;Kuklin, 2011), North America (Threlfall, 1968;Muzaffar, 2009), South America (Argentina and Chile) (González-Acuña et al, 2009;Diaz et al, 2011), and Antarctica (Barbosa & Palacios, 2009;Rocka, 2019). In Latin America, it has been isolated from the gull L. dominicanus in Chile (Torres et al, 1991(Torres et al, , 1992(Torres et al, , 1993González-Acuña et al, 2009) and later from the same host in Argentina (Diaz et al, 2011).…”