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1 September 2013 Apparent Persistence of a Landlocked Population of Gulf Pipefish, Syngnathus scovelli
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Though adults and older juveniles of some species are commonly encountered in freshwater reaches of coastal streams and rivers, pipefishes in general are believed to be either amphidromous or marine. In 1992, Gulf pipefish (Syngnathus scovelli) were reported in Lake Texana, a reservoir on the Navidad River near Edna, Jackson County, Texas. In June 2011, we collected an adult male with embryos and a juvenile from the same lake. This strongly suggests reproduction and persistence of the population at Lake Texana, which does not have access to saline waters. Though presence of a viable, reproducing population was not absolutely confirmed this appears likely to be the first known landlocked, freshwater population of any species of pipefish.

Aunque adultos y juveniles mayores de algunas especies se encuentran comúnmente en aguas dulces de arroyos y ríos costeros, en general se considera que las especies de pez pipa son anfídromas o marinas. En 1992, el pez pipa del Golfo (Syngnathus scovelli) fue reportado en el Lake Texana, una presa artificial sobre el río Navidad cerca al poblado de Edna, condado de Jackson, Texas. En junio de 2011, colectamos un macho adulto con embriones y un juvenil en el mismo lago, hecho que sugiere la reproducción y persistencia de la población del Lake Texana, el cual no tiene acceso a aguas salobres. Aunque no se ha confirmado absolutamente, parece muy probable que esta población represente la primera población de pez pipa que puede reproducirse en agua dulce sin tener salida a agua salobre.

F. Douglas Martin, Adam E. Cohen, Ben J. Labay, Melissa J. Casarez, and Dean A. Hendrickson "Apparent Persistence of a Landlocked Population of Gulf Pipefish, Syngnathus scovelli," The Southwestern Naturalist 58(3), 376-378, (1 September 2013).
Received: 4 December 2011; Accepted: 1 October 2013; Published: 1 September 2013

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