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	Provedor de dados OceanDocs (4) Autor Cortés, F. (4) Colonello, J.H. (1) Duque, G. (1) Polanco-F., A. (1) Quintero-Gil, J.A. (1) Palavra-chave Abundance (1) Atlantoraja castelnaui marine environment (1) Dipterus chilensis (1) Exploitation (1) Fecundity (1) Fishery surveys (1) Http://aims.fao.org/aos/agrovoc/c_24251 (1) Http://aims.fao.org/aos/agrovoc/c_6115 (1) Marine environment (1) Morphometry (1) Natural mortality (1) Population structure (1) Rioraja agassizi (1) Sexual maturity (1) Shark fisheries (1) Squatina guggenheim (1) Stock assessment (1) Sympterygia bonapartii (1) Temporal distribution Geographical distribution Habitat selection Abundance Environmental conditions Coastal waters Spatial variations Mustelus schmitti (1) Mais... Tipo do documento Journal Contribution (2) Theses and Dissertations (2) Ano 2014 (1) 2012 (1) 2009 (1) 2007 (1) País Belgium (4) Idioma Espanhol (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Parámetros reproductivos de la raya Dipturus chilensis en el atlántico sudoccidental (34ºS-48ºS) OceanDocs Colonello, J.H.; Cortés, F.. A total of 807 Dipturus chilensis specimens (448 males and 359 females) caught in research cruises performed by the National Institute for Fisheries Research and Development (INIDEP) during 2011 and 2012 were analyzed. The cruises were carried out between (34°S-48°S) and 50-313 m depth. Mean size at first maturity (TL50) was estimated at 780 mm and 908 mm TL for males and females, respectively, values that represented about 80% of the respective maximum total length observed. Besides, latitudinal differences in sexual maturity estimates were detected. The total number of 4-7 reproductive seasons and 42-52 follicles or individuals of maximum annual potential fecundity estimated in this paper allow to suggest that each female would produce less than 300 eggs... Tipo: Journal Contribution Palavras-chave: Morphometry; Sexual maturity; Fecundity; Fishery surveys; Abundance; Dipterus chilensis; Marine environment. Ano: 2014 URL: http://hdl.handle.net/1834/5820 Sustentabilidad de la explotacion del gatuzo Mustelus schmitti, en el ecosistema costero bonaerense (34 - 42°S) OceanDocs Cortés, F.. The life history of Chondrichthyans results in a low capacity to recover from the fishery human impact, Mustelus schmitti is the most landing shark in Argentina (SW Atlantic)where reductions in the abundance have been detected. The sustainability of M. schmitti to exploitation using a demographic analysis, was examined. The intrinsic rate of population increase (r)and extinction risk under several harvesting strategies were estimated. For this purpose a stage-structured female-only matrix model was applied, considering the mortality and reproductive parameters to each stage. The estimate of length at maturity from the logistic curve was 56.04 cm. The fertility per female ranged between 1 and 15 pups and it was increased with total length. The Mortality... Tipo: Theses and Dissertations Palavras-chave: Exploitation; Natural mortality; Shark fisheries; Stock assessment; Population structure; Stock assessment; Population structure; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6115. Ano: 2007 URL: http://hdl.handle.net/1834/2597 Contribución al conocimiento de la fauna íctica en dos isóbatas (10 y 50 M) de la región de la Guajira, Caribe colombiano OceanDocs Polanco-F., A.; Quintero-Gil, J.A.; Cortés, F.; Duque, G.. Se realizó un inventario de la fauna íctica de la región Guajira, a partir de muestras colectadas en un crucero efectuado entre Palomino y Punta Espada en las isóbatas de 10 y 50 m, del 30 de marzo al 8 de abril de 2005, a bordo del buque de investigaciones B/I ANCÓN (INVEMAR). Se colectaron ejemplars, distribuidos en familias, especies y cuatro morfotipos identificados a nivel de género. Diecisiete de estas especies fueron nuevos registros para el área de estudio. Se evaluó si existían diferencias significativas en la composición y abundancia de la fauna íctica entre las ecorregiones Guajira y Palomino y entre las diferentes profundidades. Los resultados evidenciaron que La Guajira posee una gran diversidad de peces que forman ensamblajes a nivel de la... Tipo: Journal Contribution Ano: 2009 URL: http://hdl.handle.net/1834/3578 Hábitats esenciales de condrictios (Chondrichthyes) costeros, y su relación con los procesos oceanográficos OceanDocs Cortés, F.. The relationship between environmental variables (depth, temperature and salinity) and the abundance of sharks (Mustelus schmitti and Squatina guggenheim) and skates (Sympterygia bonapartii, Rioraja agassizi and Atlantoraja castelnaui) was analyzed in the Southwestern Atlantic coastal waters (between 34~'S and 42~'S at depths of less than 50 m from the coast line). Data were collected during research Cruises carried out by the National Institute of Fisheries Research and Development (INIDEP) during winter and late spring. Due to differences in the continental water discharges, salinity spatial distribution and in the environmental condition seasonality, data from the Río de la Plata and El Rincón were independently analyzed. Shark and skate species shows... Tipo: Theses and Dissertations Palavras-chave: Temporal distribution Geographical distribution Habitat selection Abundance Environmental conditions Coastal waters Spatial variations Mustelus schmitti; Squatina guggenheim; Sympterygia bonapartii; Rioraja agassizi; Atlantoraja castelnaui marine environment. Ano: 2012 URL: http://hdl.handle.net/1834/4524 Registros recuperados: 4 Primeira ... 1 ... Última

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