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1.
Rev. Fac. Cienc. Méd. (Córdoba) ; 51(2): 5-8, 1993. tab
Article in Spanish | LILACS | ID: lil-144369

ABSTRACT

Se analizaron cuantitativamente encáfalos de tres especies de tinámidos: Eudromia elegans (martineta), Nothura Maculosa (perdiz chica) y Rhynchotus rufescens (ala colorada). Se obtuvo el volumen relativo y los índices cerebrales de once componentes encefálicos. Los resultados obtenidos se discuten desde una prespectiva ecoetológica. El tamaño relativo de los componentes encefálicos de Eudromia, Rhynchotus, Nothura, indican que existe una estrecha relación entre las estructuras cerebrales, algunos aspectos del comportamiento y el ambiente. No se presentan notables diferencias en la organización cerebral entre estos tinámidos. El mayor desarrollo del W, y los bajos valores de los BO permiten establecer que Eudromia y Rhynchotus son especies progresivas; mientras que Nothura es considerada primitiva


Subject(s)
Animals , Birds/anatomy & histology , Cerebrum/anatomy & histology , Behavior, Animal
2.
Article in English | LILACS | ID: lil-320211

ABSTRACT

A histochemical study to determine the localization of sorbitol dehydrogenase (SDH) in kidney and liver from embryionic, young and adult Myiopsitta m. monachus was performed. The enzyme activity increased with age in both organs. In the kidney, the enzyme appeared at the proximal convoluted tubules, and increased in the basal cytoplasm of the tubular cells. In the liver the localization was diffuse in the lobule but more intense in the cytoplasm of hepatocytes, especially in the perinuclear areas. These studies indicate that the cytochemical enzyme localization differs in this species, which is more evolutioned than Gallus gallus, and would be related to ontogenetic and phylogenetic differentiation.


Subject(s)
Animals , Chick Embryo/enzymology , Liver/chemistry , Kidney , L-Iditol 2-Dehydrogenase , Liver/embryology , Liver/growth & development , Kidney
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