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	Provedor de dados OceanDocs (1) International Journal of Morphology (1) Autor Cortés, F. (1) Díaz-Andrade,M. C (1) Estecondo,S (1) Galíndez,E. J (1) López-Cazorla,A (1) Palavra-chave Sympterygia bonapartii (2) Atlantoraja castelnaui marine environment (1) Elasmobranchs (1) Folliculogenesis (1) Ovary (1) Reproduction (1) Rioraja agassizi (1) Squatina guggenheim (1) Temporal distribution Geographical distribution Habitat selection Abundance Environmental conditions Coastal waters Spatial variations Mustelus schmitti (1) Mais... Tipo do documento Journal article (1) Theses and Dissertations (1) Ano 2012 (1) 2011 (1) País Belgium (1) Chile (1) Idioma Espanhol (1) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Ovarian Folliculogenesis in the Smallnose Fanskate Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes, Rajidae) International Journal of Morphology Díaz-Andrade,M. C; Galíndez,E. J; López-Cazorla,A; Estecondo,S. Chondrichthyes have become an important economic resource in the last decades, with Argentina as one of the countries that exploits more sharks and skates, even at levels that exceed de limits of many species. However, there is a scarce knowledge of the reproductive biology of this group, particularly from species inhabiting the Southern hemisphere. This work shows the most relevant facts during folliculogenesis in Sympterygia bonapartii. Results show that germinal cells are present in immature and maturing females. The most important facts that vary along de follicular development are the number of types and layers of follicular cells, the establishment of thin projections from the follicular cells and the degree of development of the thecae. Follicular... Tipo: Journal article Palavras-chave: Elasmobranchs; Reproduction; Ovary; Folliculogenesis; Sympterygia bonapartii. Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000100030 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: 2 Primeira ... 1 ... Última

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