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Master's Dissertation
DOI
https://doi.org/10.11606/D.42.2010.tde-20052010-134701
Document
Author
Full name
Luiz Augusto Miziara Ribeiro
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2010
Supervisor
Committee
Metzger, Martin Andreas (President)
Britto, Luiz Roberto Giorgetti de
Toledo, Claudio Antonio Barbosa de
Title in Portuguese
Caracterização histoquímica e imunoistoquímica de áreas telencefálicas da coruja-da-igreja (Tyto alba)
Keywords in Portuguese
Aves
DARPP-32
Dopamina
Sistema auditivo
Sistema visual
Abstract in Portuguese
Corujas se destacam por suas habilidades visuais e auditivas. Pouco é conhecido sobre a neuroanatomia do seu telencéfalo. Assim, caracterizamos através de técnicas histo/imunoistoquímicas o telencéfalo da coruja-da-igreja. Os núcleos da base foram delineados através da sua intensa imunomarcação para DARPP-32 e tirosina hidroxilase. Áreas sensoriais primárias tálamorrecipientes, como o entopálio (E), L2 do Field L auditório e o núcleo basorostral palial, foram caracterizadas pela quase ausência de DARPP-32 e alta atividade da citocromo oxidase (CO). As pseudo-camadas do Wulst visual foram delineadas com uma combinação de métodos, incluindo a ativação da CO, e imunomarcação para DARPP-32. O Wulst visual e o Field L se destacaram como regiões enormes, enquanto o E se revelou menor. Os dados sugerem que a morfologia de muitas regiões telencefálicas da coruja-da-igreja é semelhante àquela em outras aves. Contudo, o Wulst e o Field L se destacaram por seu tamanho e grau de organização, refletindo a importância do sistema visual e auditivo no comportamento de corujas.
Title in English
Histochemical and immunohistochemical characterization of forebrain areas in the barn owl (Tyto alba)
Keywords in English
Auditory system
Birds
DARPP-32
Dopamine
Visual system
Abstract in English
Owls possess exceptional visual and auditory capacities. There is only limited information about the neuroanatomy of their forebrain. Thus, we characterized by histo/immunohistochemical techniques the forebrain of the barn owl. The basal ganglia were delineated by their intense immunostaining for DARPP-32 and tyrosine hydroxylase. Primary thalamorecipient sensory areas, such as the entopallium (E), L2 of the auditory Field L and the basorostral palial nucleus were characterized by the almost absence of DARPP-32 and their high citocrome oxidase (CO) activity. The pseudo layers of the visual Wulst were delineated by a combination of methods, including CO activity and immunostaining for DARPP-32.The Wulst and Field L were outlined by their huge size, whereas the E was small. These data suggest that the morphology of many telencephalic regions of the barn owl is similar to that in other birds. However, the Wulst and Field L were highlighted by their size and degree of organization, reflecting the importance of the visual and auditory system for the behavior of owls.
 
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Publishing Date
2010-06-07
 
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