55 research outputs found
An Examination of Morphometric Variations in a Neotropical Toad Population (Proceratophrys cristiceps, Amphibia, Anura, Cycloramphidae)
The species Proceratophrys cristiceps belongs to the genus Proceratophrys within the family Cycloramphidae. These amphibians are found exclusively in South America in the morphoclimatic domain of the semi-arid depression zones in northeastern Brazil known as the Caatinga. We examined intrapopulational variation using univariate and multivariate statistics with traditional and geometric morphometrics, which supported the existence of two morphotypes of this species. Our results indicated significant degrees of variation in skeletal characteristics between some natural populations of this species. Careful analyses of variability levels are fundamental to avoid taxonomic errors, principally in populations that demonstrate characteristics intimately associated with their area of occurrence, as is the case of Proceratophrys cristiceps
A criação do Terceiro Corpo do Exército na província do Rio Grande do Sul: conflitos políticos resultantes da administração militar nos anos críticos da Guerra do Paraguai (1866-1867)
Frog species richness, composition and beta-diversity in coastal Brazilian restinga habitats
Preceptoria em Medicina de Família e Comunidade: desafios e realizações em uma Atenção Primária à Saúde em construção
Taxocenose de anuros (Amphibia: Anura) em uma área de Floresta Ombrófila Densa no Sul do Brasil
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