Genetic diversity in natural populations of Piper cernuum

Piper cernuum is a native plant of the Brazilian Atlantic rain forest. This work studies the distribution of allozyme diversity in P. cernuum natural populations in order to establish a strategy for sustainable management and conservation. Leaf samples were collected in two Brazilian states. High divergences among populations (F-SR = 0.380) and low divergences among regions (F-RT = -0.069) and among gaps of the same population (F-GT = 0.062) were found. No association between the geographical variation and the genetic distance was detected. An excess of heterozygotes was detected in the populations (F-IS = -0.170), suggesting selection in favor of heterozygotes. The results, and the fact that the species depends on constant gap formation for maintenance of its dynamism, suggest that the founder effect is largely responsible for the structuring of populations. For sustainable management, the maintenance of plants/reproductive branches in the gaps is of major importance. The genotypes produced in these gaps are responsible for the establishment of new gaps and are the foundation for new populations, maintaining the dynamics of allele movement.

Indium hydroxide nanocubes and microcubes obtained by microwave-assisted hydrothermal method

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

High resolution ultra high pressure liquid chromatography-time-of-flight mass spectrometry dereplication strategy for the metabolite profiling of Brazilian Lippia species

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

Smoking status and tumor necrosis factor-alpha mediated systemic inflammation in COPD patients

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

Dissipation of DDT in a heavily contaminated soil in Mato Grosso, Brazil

After the prohibition of organochlorine-pesticide use in Brazil for controlling insect vector diseases, Mato Grosso State gathered the exceeding DDT and stored it irregularly in an open air area that belongs to the National Health Foundation, causing soil contamination. This study aimed to evaluate the contamination level and dissipation of p,p′-DDT and p,p′-DDE in this area. For that, surface soil samples were collected on 19 September 2000, 15 December 2000, 4 April 2001 and soil samples 30-40 cm; 60-70 cm and 90-100 cm deep were taken from five points in the studied area on 17 July 2001. The contaminants were determined by a small scale method which consists on extraction and clean-up steps combined into one step by transferring soil samples mixed with neutral alumina to a chromatographic column prepacked with neutral alumina and elution with hexane:dichloromethane (7:3 v:v). The eluate was concentrated and the analytes were quantified by gas chromatography with an electron-capture detector. p,p′-DDT at surface soil ranged from 3800 to 7300 mg kg -1. 30-40 cm deep soil sample concentrations varied from 0.036 to 440 mg kg -1 while 90-100 cm deep samples varied from 0.069 to 180 mg kg -1. Volatilization is probably the main dissipation process. The p,p′-DDT is moving slowly downward in the soil profile, however, the levels of this contaminant are high enough to present risk to underground waters. © 2005 Elsevier Ltd. All rights reserved.

Color polymorphism in Leptodactylus fuscus (Anura, Leptodactylidae): A defensive strategy against predators?

Color patterns are strongly related to defensive strategies in anurans. Some anurans present more than one morphotype. Leptodactylus fuscus, for example, present two morphotypes (with and without vertebral white line). The proportion of each pattern in nature is different, whereby there are always more individuals without stripes. Therefore, we speculated if this difference in the observed color pattern is due to unequal predation pressures (i.e. stronger over the striped morphotype), and/or if there is a genetic component related to autossomic heritage. To test the selective predation over the morphotypes, we prepared plasticine models of L. fuscus with both phenotypes and placed them in the field. We did not find evidence of predation selection and as we found significant relationships between the proportions of the phenotypes and Mendelian proportions, we suggest that the phenotypes observed in this species are genetically determined (involving dominant and recessive alleles) and may not have a defensive function.

Adaptação de um instrumento para classificação de pacientes baseado nas necessidades individualizadas no cuidado de enfermagem do paciente pediátrico oncológico

Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

Parâmetros genéticos e fenotípicos de peso corporal ao abate e caracterísiticas de carcaça em cruzamentos recíprocos de aves

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Violência doméstica: o que se espera do profissional de saúde?

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Desempenho inicial da laranjeira Valência sobre 43 porta-enxertos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Análise da atuação do Conselho Tutelar frente à evasão escolar de adolescentes no município de Barretos/SP

Pós-graduação em Serviço Social - FCHS

Avaliação agrometeorológica do cultivo de pepino (Cucumis sativus L.) em ambientes protegido e a campo, em ciclos de outono-inverno e primavera-verão

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

Maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.): aspectos relativos à fenologia, demanda hídrica e conservação pós-colheita

Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA

O adolescente em conflito com a lei: política socioeducativa de direitos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Demanda Hídrica do Maracujazeiro Amarelo (passiflora Edulis Sims F. Flavicarpa Deg.)

Determinou-se à demanda hídrica e o coeficiente de cultivo (Kc) do maracujá amarelo (Passiflora edulis Sims f. flavicarpa Deg.), seleção Sul-Brasil, cultivado sob irrigação localizada, no município de Botucatu-SP (22o 51’ S, 48o 26’ W). A evapotranspiração máxima da cultura (ETc) e a evapotranspiração de referência (ETo) foram medidas em lisímetros de nível de lençol freático constante, durante o período de 29 de setembro de 2000 a 20 de julho de 2001. Os valores da ETc e ETo foram de 954,98 mm e 1.069,21 mm, respectivamente, durante todo o período medido. Os valores de Kc variaram de 0,42 a 1,12, com os valores máximos registrados entre 150 e 210 dias após o transplantio das mudas no campo (DAT), período correspondente aos estádios fenológicos de florescimento e formação dos frutos.