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	Provedor de dados BJB (3) Autor FERNANDES,M. N. (3) RANTIN,F. T. (2) PANEPUCCI,L. (1) PERNA-MARTINS,S. A. (1) SANCHES,J. R. (1) SEVERI,W. (1) Mais... Palavra-chave Acclimation temperature (1) Armored fish (1) Epithelium (1) Gill morphology (1) Gill structure (1) Gills (1) Hypostomus cf. plecostomus (1) Hypoxia (1) Lactate dehydrogenase (1) Loricariid (1) Malate dehydrogenase (1) Pacu (1) Piaractus mesopotamicus (1) Rhinelepis strigosa (1) Teleost (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2001 (1) 2000 (2) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Epithelial gill cells in the armored catfish, Hypostomus cf. plecostomus (Loricariidae) BJB FERNANDES,M. N.; PERNA-MARTINS,S. A.. Epithelial gill cell morphology and distribution were investigated in the armored catfish, Hypostomus cf. plecostomus, which lives in soft ion-poor Brazilian freshwaters. Pavement cells are the most abundant type of cell on both filament and lamellar epithelia and there are a great number of mucous and chloride cells between them. Mucous cells are almost covered by adjacent pavement cells and have large packed granules showing electrondense differences. No mucous cells were found on the lamellar epithelium. Chloride cell were distributed throughout both epithelia and usually have large apical surface facing the external medium and may exhibit short and sparsely distributed microvilli. The presence of chloride cells on the lamellar epithelium may be an... Tipo: Info:eu-repo/semantics/article Palavras-chave: Gills; Epithelium; Teleost; Loricariid; Hypostomus cf. plecostomus. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000100010 Changes in lactate dehydrogenase and malate dehydrogenase activities during hypoxia and after temperature acclimation in the armored fish, Rhinelepis strigosa (Siluriformes, Loricariidae) BJB PANEPUCCI,L.; FERNANDES,M. N.; SANCHES,J. R.; RANTIN,F. T.. Lactate (LDH) and malate dehydrogenase (MDH) of white skeletal muscle of fishes acclimated to 20, 25 and 30°C and thereafter submitted to hypoxia were studied in different substrate concentrations. Significant differences for LDH and MDH of white muscle enzyme activities are described here for the first time in Rhinelepis strigosa of fishes acclimated to 20°C and submitted to hypoxia for six hours. LDH presented a significant decrease in enzyme affinity for pyruvate in acute hypoxia, for fishes acclimated to 20°C and an increase for fishes acclimated to 30°C. Tipo: Info:eu-repo/semantics/article Palavras-chave: Hypoxia; Acclimation temperature; Lactate dehydrogenase; Malate dehydrogenase; Armored fish; Rhinelepis strigosa. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000200021 Structural and morphological features of Piaractus mesopotamicus (Holmberg, 1887) gills BJB SEVERI,W.; RANTIN,F. T.; FERNANDES,M. N.. The pacu Piaractus mesopotamicus (Holmberg, 1887), is a commercially important serrasalmid fish endemic to the Paraná-Paraguay River basin, and one of the most widely cultivated native fish species in the Neotropics. As a migratory species, also inhabiting temporary pools subjected to hypoxic conditions, the species presents a high plasticity concerning respiratory adaptations. In order to supplement basic knowledge on the respiratory physiology and morphology of this species, some structural features of pacu gills, such as filament and lamellae structure, and circulatory pattern are described in this paper. Tipo: Info:eu-repo/semantics/article Palavras-chave: Gill structure; Gill morphology; Pacu; Piaractus mesopotamicus. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000300014 Registros recuperados: 3 Primeira ... 1 ... Última

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