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LIBRO DIVERSIDAD DE PECES EN ECUADOR

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Esta serie especial de ictiología ecuatoriana, número I, es una contribución de la Red Ecuatoriana de Ictiología (REI) que busca trasmitir información científica para que esté al alcance de todos, accesible a un público amplio. Así, gestores, manejadores y tomadores de decisiones podrán contar con información sobre un recurso natural del que poco se habla, pero que es explotado (y sobreexplotado), porque poco se sabe.
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The composition and landings of sharks were determined based on the collected data in 2012 from the monitoring of artisanal fishing fleet directed to the fishery of big pelagic fishes carried out by the staff of Instituto Nacional de Pesca. The sharks landing was estimated in 9361.0 tonnes which representes an increase of 2.7% compared to 2011 but a decrease of 15.5% compared to 2010. Alopias pelagicus and Prionace glauca were species commonly landed and Manta was the most representative fishing port in terms of volumes landed. These shark species were captured as bycatch from the artisanal fleet that captures tunas, weevil and sword using coarse longline. Regarding the sexual maturity of shark species, a high quantitaty of immature individuals were registered in the landings of C. falciformis, S. zygaena and I. oxyrinchus, while A. pelagicus and P. glauca had a different behavior when registering more than 50% of mature organisms. The sharks catch areas were located mainly southwest of the Galapagos Islands in the case of the fleet of vessels that catch tuna, weevil and swordfish and in international waters between 00°02’ N and 12°00’ S for dorado.
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The monotypic genus Landonia Eigenmann & Henn, 1914 was only known from its type locality in western Ecuadorian drainages. Recent collections revealed the presence of Landonia latidens Eigenmann & Henn, 1914 in Chira and Piura river basins in Peru. Thus, the distribution of this species is extended, constituting the southernmost record of the species.
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El presente trabajo se desarrolló como complemento al componente de restauración ecológica contemplado dentro del marco de acción del Plan de Gestión Ambiental del FONAG (Fondo para la conservación del Agua), institución adscrita al Municipio de Quito. El documento forma parte de una línea base de información que gira en torno a la construcción de un escenario adecuado para emprender actividades de restauración ecológica fluvial, en los ambientes en los que ésta fuera necesaria. A nivel municipal es importante que las consideraciones que aquí se discuten así como las iniciativas de restauración ecológica fluvial se inserten como un componente más dentro de los planes de gestión ambiental que cada gobierno local (GAD) tenga que emprender en el territorio de su jurisdicción, y se lo aborde como un elemento que requiere un permanente seguimiento y monitoreo para detectar oportunamente los cambios en la calidad y cantidad del agua que se puedan presentar en una determinada zona y se puedan tomar las acciones de manejo que correspondan.
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Available online under http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp
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