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	Provedor de dados Neotropical Ichthyology (1) Autor Ghirardi,Romina (1) Julieta Parma,M. (1) López,Javier A. (1) Scarabotti,Pablo A. (1) Palavra-chave Argentina (1) Floodplain pond (1) Hypoxia (1) Lip extension (1) Morphological adaptation (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2009 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Dermal lip protuberances associated with aquatic surface respiration in juveniles of the piscivorous characid Salminus brasiliensis (Actinopterygii: Characidae) Neotropical Ichthyology Scarabotti,Pablo A.; Julieta Parma,M.; López,Javier A.; Ghirardi,Romina. Some South American freshwater fishes can improve their capability of aquatic surface respiration (ASR) by developing dermal lip protuberances in the lower jaw. This adaptation was thought to be limited to omnivorous or herbivorous fishes. The present work provides the first evidence that juveniles of a piscivorous characid, Salminus brasiliensis, develop dermal lip protuberances during periods of hypoxia in floodplain ponds of the Salado River, in Argentina. The protuberance of S. brasiliensis involves dermal portions of both jaws exhibiting lateral lobes on the sides of the mouth arranged in the vertical plane. Water dissolved oxygen concentrations less than or equal to 1.05 mgl-1 were associated with a remarkable increase in lip protuberance. The... Tipo: Info:eu-repo/semantics/article Palavras-chave: Hypoxia; Morphological adaptation; Lip extension; Floodplain pond; Argentina. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300013 Registros recuperados: 1 Primeira ... 1 ... Última

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