title: First record of the genus Jenynsia from marine water on the coast of Punta del Este, Maldonado, Uruguay (Cyprinodontiformes: Anablepidae).
abstract: The first report of the genus Jenynsia occurring in marine waters is presented here. The evolution of high salinity tolerance within Anablepidae is discussed and a hypothesis is proposed that this characteristic is a plesiomorphic trait in Jenynsia which was probably present in the common ancestor of the Anablepidae.
authors.affiliation: KCA, Grupo de Estudio del Killi Club Argentino, Aristóbulo del Valle 5125 (B1653MJB) Villa Ballester, Buenos Aires, Argentina.
authors.forename: P
authors.initials: P
authors.lastname: Calviño
authors.affiliation: KCA, Grupo de Estudio del Killi Club Argentino, Aristóbulo del Valle 5125 (B1653MJB) Villa Ballester, Buenos Aires, Argentina.|CONICET - División de Ictiología, Museo Argentino de Ciencias Naturales (MACN), Av. Ángel Gallardo 470 (C1405DJR), Buenos Aires, Argentina.
authors.forename: F
authors.initials: F
authors.lastname: Alonso
mesh_terms: D000818:Animals; D003532:Cyprinodontiformes / Q000502:physiology*; D017753:Ecosystem; D055049:Salt Tolerance / Q000502:physiology*; D012623:Seawater; D014583:Uruguay
keywords: Atlantic Ocean; Jenynsia multidentata; evolution; salinity tolerance; seawater