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	Provedor de dados Neotropical Ichthyology (2) Rev. Bras. Zool. (1) Autor Shibuya,Akemi (3) Tanaka,Sho (3) Zuanon,Jansen (3) Araújo,Maria Lúcia G. de (1) Carvalho,Marcelo R. de (1) Palavra-chave Batoidea (1) Behavior (1) Elasmobranchii (1) Feeding behavior (1) Kinematics (1) Locomotor adaptation (1) Mechanosensory (1) Neuromast (1) Orobranchial musculature (1) Paratrygon (1) Potamotrygon (1) Potamotrygonid stingrays (1) Prey manipulation (1) Swimming (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2015 (1) 2012 (1) 2010 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última 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 Morphology of lateral line canals in Neotropical freshwater stingrays (Chondrichthyes: Potamotrygonidae) from Negro River, Brazilian Amazon Neotropical Ichthyology Shibuya,Akemi; Zuanon,Jansen; Araújo,Maria Lúcia G. de; Tanaka,Sho. The relationship between the distribution of the lateral line canals and their functionality has not been well examined in elasmobranchs, especially among Neotropical freshwater stingrays of the family Potamotrygonidae. The spatial distribution of the canals and their tubules and the quantification of the neuromasts were analyzed in preserved specimens of Potamotrygon motoro, P. orbignyi, Potamotrygon sp. "cururu", and Paratrygon aiereba from the middle Negro River, Amazonas, Brazil. The hyomandibular, infraorbital, posterior lateral line, mandibular, nasal and supraorbital canals were characterized and their pores and neuromasts quantified. The ventral canals are known to facilitate the accurate localization of prey items under the body, and our results... Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding behavior; Mechanosensory; Neuromast; Paratrygon; Potamotrygon. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000400017 The use of pelvic fins for benthic locomotion during foraging behavior in Potamotrygon motoro (Chondrichthyes: Potamotrygonidae) Rev. Bras. Zool. Shibuya,Akemi; Carvalho,Marcelo R. de; Zuanon,Jansen; Tanaka,Sho. Synchronized bipedal movements of the pelvic fins provide propulsion (punting) during displacement on the substrate in batoids with benthic locomotion. In skates (Rajidae) this mechanism is mainly generated by the crural cartilages. Although lacking these anatomical structures, some stingray species show modifications of their pelvic fins to aid in benthic locomotion. This study describes the use of the pelvic fins for locomotory performance and body re-orientation in the freshwater stingray Potamotrygon motoro (Müller & Henle, 1841) during foraging. Pelvic fin movements of juvenile individuals of P. motoro were recorded in ventral view by a high-speed camera at 250-500 fields/s-1. Potamotrygon motoro presented synchronous, alternating and unilateral... Tipo: Info:eu-repo/semantics/article Palavras-chave: Behavior; Elasmobranchii; Locomotor adaptation; Potamotrygonid stingrays; Swimming. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000300179 Registros recuperados: 3 Primeira ... 1 ... Última

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