Morphological variation in two genetically distinct groups of the golden-striped salamander, Chioglossa lusitanica (Amphibia : Urodela)

Morphometric and colour pattern variation in the endemic Iberian salamander Chioglosso lusitanica is concordant with the genetic differentiation of two groups of populations separated by the Mondego river ill Portugal. Salamanders from the south have shorter digits than those from the north. Clinal variation with a south to north increase in limb. toe and finger length was found superiniposed on this dichotomy resulting in stepped clines for characters describing appendage size. Genetic variability was paralleled by colour pattern variability in the contact zone and in northern populations. To explain the observed parallels we invoke the neutral processes of vicariant isolation. admixture in a secondary contact zone, genetic drift in addition to selection acting along all environmental gradient. Morphological constraints imposed by a highly specialized ecological niche may explain why the genetic subdivision of C. lusitanica since the early, Pleistocene has remained fairly cryptic.

Financial crises in "successful" emerging economies

Includes bibliography

Digit ratio (2D:4D) is associated with gastric cancer

Background: Sex steroid exposure during early human development may influence disease susceptibility. Digit ratio (2D:4D) is a putative marker for prenatal hormone exposure and sensitivity, as well as the action of genes closely related to carcinogenesis. Digit ratio could act as a possible marker for cancer predisposition. Aims: The aim of this study is to investigate the possible correlations between right hand, left hand and right minus left (R. - L) 2D:4D and gastric cancer (GCA) in men and women and assess the correlations with tumor staging and histological diagnosis. Methods: Digital images of the right and left hand palms of patients diagnosed with GCA (n = 57, 42 males, 15 females) and age and sex-matched controls (n = 59, 41 males, 18 females) were obtained. Means for 2D:4D were compared. Data were analyzed by repeated-measures one-way ANOVA and Student's t-test for finger measurements and group comparisons and Pearson's and Spearman's tests for correlations with tumor staging (α = 0.05). Results: GCA group presented significantly higher left 2D:4D, but significantly lower R. - L in comparison to healthy controls, particularly so for males. Digit ratio did not correlate to clinical staging or TNM staging. However, low R. - L was significantly related to adenocarcinomas. Conclusions: Early developmental conditions, including prenatal testosterone seem to play a role on the malignant transformation of gastric lesions. The 2D:4D pattern found for gastric cancer parallels that earlier described for breast cancer. The findings suggest that 2D:4D could add to the list of etiological factors and be a putative marker for the screening of patients' susceptibility to develop gastric cancer. © 2012 Elsevier Ltd.

O pensamento vivo de Mário de Andrade: dos parques infantis aos CEUs da cidade de São Paulo

Pós-graduação em Artes - IA

Antonio Dias: imagens, palavras e diagramas

Pós-graduação em Artes - IA

Metáforas do alimento no filme A fantástica fábrica de chocolate (1971 e 2005)

Pós-graduação em Educação - IBRC

Da cartolina ao computador: uma proposta para o estudo de Geometria

Pós-graduação em Educação Matemática - IGCE

Educação estatística crítica: uma possibilidade?

Pós-graduação em Educação Matemática - IGCE

Transformação de hábitos e sustentabilidade: a evolução de interpretantes na (auto) construção da cidade

Pós-graduação em Filosofia - FFC

Teclas paralelas: a dimensão literário-musical em Os teclados, de Teolinda Gersão

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Memórias de um professor da escola normal: Umuarama - Paraná (1967-1976)

Pós-graduação em Educação - FFC

Criador e criatura: os Estados Unidos e a Organização Mundial do Comércio (OMC)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A atuação do assistente social como educador ambiental nos Projetos de Trabalho Técnico Social (PTTS)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Leitura, literatura infantil e estratégias de leitura no contexto escolar: concepções e práticas

Pós-graduação em Educação - FFC

Análise integrada de dados no estudo da dinâmica da terra em uma bacia hidrográfica: o caso do Rio Balsinhas-MA

Pós-graduação em Geografia - IGCE