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	Provedor de dados Neotropical Ichthyology (3) Boletín de Investigaciones (1) Autor Carvalho,Marcelo Rodrigues de (1) Kobelkowsky,Abraham (1) Loboda,Thiago Silva (1) Rincon,Getulio (1) Shibuya,Akemi (1) Tanaka,Sho (1) Vaske Junior,Teodoro (1) Vooren,Carolus M. (1) Zuanon,Jansen (1) Mais... Palavra-chave Batoidea (4) Deep-water (1) Dimorfismo sexual dentario (1) Elasmobranch (1) Freshwater stingrays (1) Gymnura (1) Kinematics (1) Morfología (1) Morphology (1) Neotropical region (1) Orobranchial musculature (1) Prey manipulation (1) Rajiformes (1) Sistema digestivo (1) South American river basins (1) Taxonomy (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2013 (2) 2012 (1) 2008 (1) País Brazil (3) Colombia (1) Idioma Inglês (3) Espanhol (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última MORFOLOGÍA DEL SISTEMA DIGESTIVO DE LA RAYA MARIPOSA GYMNURA MICRURA (BATOIDEA: GYMNURIDAE) Boletín de Investigaciones Kobelkowsky,Abraham. Con el objeto de conocer la organización morfológica del sistema digestivo de la raya mariposa Gymnura micrura, se colectaron 23 ejemplares con red de arrastre en lagunas costeras y el litoral del estado de Veracruz en el golfo de México. Las muestras se fijaron en formaldehído y se conservaron en alcohol etílico. En el laboratorio, se realizó el análisis anatómico de los componentes del tracto digestivo y de sus glándulas anexas. Así mismo se llevó a cabo la comparación con especies representativas de las familias Rhinobatidae, Rajidae, Urotrygonidae y Dasyatidae, permitiendo reconocer que la organización general del sistema digestivo de G. micrura corresponde al patrón morfológico general de Batoidea. Sin embargo, se identificaron como diferencias... Tipo: Info:eu-repo/semantics/article Palavras-chave: Batoidea; Gymnura; Morfología; Sistema digestivo; Dimorfismo sexual dentario. Ano: 2013 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100003 Systematic revision of the Potamotrygon motoro (Müller & Henle, 1841) species complex in the Paraná-Paraguay basin, with description of two new ocellated species (Chondrichthyes: Myliobatiformes: Potamotrygonidae) Neotropical Ichthyology Loboda,Thiago Silva; Carvalho,Marcelo Rodrigues de. A systematic revision of the Potamotrygon motoro (Müller & Henle, 1841) species complex in the Paraná-Paraguay basin based on morphological characters was undertaken. Morphological systems analyzed include external morphology, coloration, dermal denticles, and spines, canals of the ventral lateral-line system, and skeletal components. Potamotrygon motoro is widely distributed in the Paraná-Paraguay basin and some of its diagnostic characters are: ocelli present on dorsal disc tricolored, well-defined and evenly distributed, with diameter similar or greater than eye-length; ventral coloration with relatively large whitish central region, with gray or brown area predominant on outer ventral disc margins; dermal denticles well-developed and star-shaped... Tipo: Info:eu-repo/semantics/article Palavras-chave: Batoidea; Freshwater stingrays; Morphology; Neotropical region; South American river basins; Taxonomy. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000400693 Feeding behavior of the Neotropical freshwater stingray Potamotrygon motoro (Elasmobranchii: Potamotrygonidae) Neotropical Ichthyology Shibuya,Akemi; Zuanon,Jansen; Tanaka,Sho. The feeding mechanisms of elasmobranchs and their functioning have been receiving growing scientific attention, although less emphasis has yet to be directed towards batoid species. The present study investigated the use of orobranchial musculature during prey capture and processing behavior in Potamotrygon motoro. Ten orobranchial muscle groups were removed to determine their relative biomasses. The kinematics of the musculature was described based on videos of prey capture and manipulation under captive conditions recorded at 250 and 500 field/s. Analyses of the orobranchial musculature indicated that adductor muscles responsible for closing the mouth had high biomasses, which is consistent with their functions related to apprehend and manipulate the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Batoidea; Kinematics; Orobranchial musculature; Prey manipulation. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000100018 Stomach contents and notes on the reproduction of the Onefin Skate Gurgesiella dorsalifera (Chondrichthyes: Rajidae) off Southern Brazil Neotropical Ichthyology Rincon,Getulio; Vaske Junior,Teodoro; Vooren,Carolus M.. The Brazilian endemic deep-water onefin skate (Gurgesiella dorsalifera) is a rare small species recently described in the 80's. No biological information is available on this species and its extremely restricted geographic distribution has been used to classify it as a vulnerable species under IUCN red list criteria. Twenty four specimens (115 to 207 mm disc width) were captured off southern Brazilian coast at the region of Cape Santa Marta Grande (State of Santa Catarina) by deep-water otter trawl (430-524 m). The analysis of stomach contents revealed an apparent opportunistic predation on juveniles of Urophycis brasiliensis (IRI = 6944), with an average total length of 21 mm, followed by mysidaceans (IRI = 2938), unidentified teleosts (IRI = 1969), the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Elasmobranch; Deep-water; Batoidea; Rajiformes. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400019 Registros recuperados: 4 Primeira ... 1 ... Última

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