Brazilian Botanic Gardens

We argue that botanic gardens, as plant conservation focused institutions, have been tested in temperate regions that possess a relatively robust conservation infrastructure and a relatively low number of threatened species. The ability of the Brazilian botanic gardens to support plant conservation is especially challenging, given their small number relative to Brazil’s plant diversity and the increasing rate of habitat loss and plant endangerment. This study, the first for Brazil, assesses the conservation capacity of Brazilian botanic gardens. An assessment is made of the status of conservation facilities in Brazilian botanic gardens and the conservation status of their plant collections.This was based on a survey sent to thirty-six Brazilian botanic gardens in 2011– 2013 using information from the 2008 Brazilian Red List, and seven state conservation lists. The results identified a small percentage of threatened species (n =102/21 per cent) in ex situ collections of 22 botanic gardens and less than 10 per cent representation for each state red list. An assessment based on the updated Brazilian Red List (2014) showed that 425 threatened species were maintained in living collections of 18 botanic gardens. Despite the extensive size of some collections, the proportion of threatened species in the collections was found to be very low. Improvement in infrastructure, technical capacity, including horticultural skills, and development of policies and protocols will benecessary to increase the effectiveness of the collections for conservation aims

Análises morfométricas entre apis mellifera da mesorregiao do sertao paraibano

Objetivou-se, com esse trabalho, caracterizar as populações de Apis mellifera da mesorregião do Sertão paraibano, comparando os indivíduos morfometricamente. As medidas tomadas foram: comprimento da asa anterior (CAA) e largura da asa anterior (LAA), ângulos B4, E9, G18, J16, K19, N23, O26 e distância b (Db); comprimento da asa posterior (CAP) e largura da asa posterior (LAP), distância L2 (DL2), L5 (DL5) e ângulo W3, comprimento do fêmur (CF), comprimento da tíbia (CT), comprimento do tarso (CTS) e largura do tarso (LTS) e comprimento da probóscide (CP). Para a comparação das diferentes variáveis estudadas utilizou-se a análise de variância, o teste de Tukey, análise canônica e o teste de Tocher a 5% de significância. Para as medidas realizadas em cada amostra utilizou-se um equipamento de análise de imagens, Programa Image Pro Plus 4.0. As variáveis CTS e LTS, ângulos G18 e K19 e DL2 diferiram significativamente (p<0,05) entre as localidades estudadas de acordo com o teste de Tukey. A análise canônica mostrou a existência de um agrupamento com base nas características morfológicas entre duas das localidades estudadas apesar da distância geográfica. Concluiu-se que existem dois grupos distintos morfometricamente para a microrregião estudada e que há um processo adaptativo das abelhas, quanto às medidas morfométricas, para as diferentes regiões geomorfológicas

Effects of pneumonectomy on nitric oxide synthase expression and perivascular edema in the remaining lung of rats

Pneumonectomy is associated with high mortality and high rates of complications. Postpneumonectomy pulmonary edema is one of the leading causes of mortality. Little is known about its etiologic factors and its association with the inflammatory process. The purpose of the present study was to evaluate the role of pneumonectomy as a cause of pulmonary edema and its association with gas exchange, inflammation, nitric oxide synthase (NOS) expression and vasoconstriction. Forty-two non-specific pathogen-free Wistar rats were included in the study. Eleven animals died during or after the procedure, 21 were submitted to left pneumonectomy and 10 to sham operation. These animals were sacrificed after 48 or 72 h. Perivascular pulmonary edema was more intense in pneumonectomized rats at 72 h (P = 0.0131). Neutrophil density was lower after pneumonectomy in both groups (P = 0.0168). There was higher immunohistochemical expression of eNOS in the pneumonectomy group (P = 0.0208), but no statistically significant difference in the expression of iNOS. The lumen-wall ratio and pO2/FiO2 ratio did not differ between the operated and sham groups after pneumonectomy. Left pneumonectomy caused perivascular pulmonary edema with no elevation of immunohistochemical expression of iNOS or neutrophil density, suggesting the absence of correlation with the inflammatory process or oxidative stress. The increased expression of eNOS may suggest an intrinsic production of NO without signs of vascular reactivity.Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)CNP

Amniotic ectoderm expansion in mouse occurs via distinct modes and requires SMAD5-mediated signalling

Stem cells & developmental biolog

Quem somos nós? Ou perfis da comunidade profissional arqueológica no Brasil: primeiras aproximações

WHO ARE WE? OR A PROFILE OF THE ARCHAEOLOGICAL PROFESSIONAL COMMUNITY IN BRAZIL: FIRST APPROACHESIn the last twenty years, archeological academic-scientific training has grown exponen-tially in Brazil, culminating in the recognition of the profession in 2018. However, little is known about the demographic profiles of people working in the area, as well as of students in the process of training, in undergraduate and graduate levels. By updating some data from previous studies, in this manuscript we present the results of an initial survey on the professional profile in Brazilian archeology, which includes information on the trajectory of education, gender, nationality and re-search themes. This initiative allows us to outline the challenges of inclusion and representativeness in the exercise of the profession, whose reflections will assist us in the conceiving of practical measures for a change in this situation in the future.Archaeology of the AmericasArchaeological Heritage Managemen