13 resultados para Aguarelas (1926)

em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"


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A new species of Pseudopaludicola is described from the state of Mato Grosso, western Brazil. The new species inhabits the transition zone between Brazilian Cerrado and Amazon rainforest in northern Mato Grosso, and is characterized by its medium size (snout-vent length 12-17 mm), lack of T-shaped terminal phalanges, toe tips not expanded laterally, presence of two antebrachial tubercles, and smooth upper eyelids. The advertisement call of the new species consists of a series composed of 11-74 non-pulsed notes. Mean dominant frequency is 3938 Hz. Each note presents a slight ascendant frequency modulation in its first half, and another ascendant modulation in its last half. We also present new data on the distribution and conservation status of Pseudopaludicola canga.

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The present study reveals that the excretory system of Glossoscolex paulistus is formed by open holonephridia (exonephridia). It is noticed that different zones are recognized in the nephridial canal, with defined histological and histochemical characteristics: 1) primary canal; 2) lobed canal; 3) first rounded segment; 4) afferent thin segment; 5) efferent thin segment; 6) second rounded segment; 7) ciliary tube; 8) clear canal; 9) pigmented canal; 10) intermediate canal; 11) bladder; 12) terminal canal; 13) nephridiopore. All these regions are intercellular and cilia are found in regions 1, 2, 3, 6, 7 and 13. The connections between afferent and efferent capillary of the vascular supply of the nephridium are made of capillary loops and dilatations which we call glomeruli in this paper. Filtering functions are suggested for the glomerulus. The response of the lobed canal and the first and second rounded segments to Gomori's reaction is strongly positive and this is found to coincide with the largest concentration of glomeruli in the main loops 1 and II, that suggests a higher filtration capacity for the canal and segments.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Ciências Sociais - FFC

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em História - FCLAS

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)