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... 'Swingle' citrumelo [Citrus paradisi MacFadenx Poncirus trifoliata (L.) Raf.] has been extensively used as a rootstock in several citrus growing regions of the World, including Southern Brazil where 'Rangpur' lime (Citrus limonia Osbeck) is still the predominant variety despite being affected by several important pathogens. In this case, 'Swingle' citrumelo is used to produce nursery trees to esta ...
... At times when attention on climate issues is strongly focused on the assessment of potential impacts of future climate change due to the intensification of the planetary greenhouse effect, it is perhaps pertinent to look back and explore the consequences of past climate variability. In this article we examine a large disruption in global climate that occurred during 1877-1878, when human influence ...
Euglossa; Eulaema; insect nests; species diversity; seasonal variation; Brazil
Abstract:
... The bees of subtribe Euglossina are an important component of neotropical fauna and have greater species diversity in tropical forests than in spits. They play an important role in the pollination of several plant species and are considered good indicators of environmental conditions. From February 2005 to January 2006, a total of 429 specimens belonging to three genera [Euglossa (Latreille), Eula ...
... How to improve access to land and livestock production in synergy with ecosystem conservation? The paradigm occurring in natural grasslands of the Southern Brazilian Campos biome is used to illustrate the dilemma. This paper aims to contribute by addressing the technical bases being used by legislations concerning access to land and incentive to production and their consequences for natural grassl ...
... Acid and thermal resistances of a Salmonella enteritidis strain involved in several foodborne outbreaks in southern Brazil were compared with other two Salmonella serovars. Strains were cultivated in Nutrient Broth supplemented with 1% glucose for acid adaptation, and then cells were exposed to different pH and temperatures. Survivors were enumerated and cellular proteins were analyzed by sodium d ...
... The present study aimed to evaluate under controlled conditions the acquisition of Hepatozoon canis by Amblyomma ovale after feeding on infected dogs, and the subsequent induction of infection in uninfected dogs that ingested the experimentally infected ticks. Two H. canis naturally infected dogs were infested with A. ovale adult ticks derived from an uninfected laboratory tick colony. After feedi ...
... A population of the little-known species Aorolaimus banoae was collected in the municipality of Cananéia, São Paulo state, Brazil, in a remnant of the once far more extensive Brazilian Atlantic Forest. As the original description of this species was based on only three females and nine males, additional morphometric and morphological data, including SEM studies, are presented. It is suggested that ...
Maria de Fátima Muniz; Vicente Paulo Campos; Maria Ritta A. Almeida; Ana Cristina M.M. Gomes; Marcilene F. dos Santos; Fabiane de Castro Mota; Regina M.D.G. Carneiro
... Females, males and second-stage juveniles of an unusual population of Meloidogyne exigua race 3 that only parasitises the rubber tree were examined by light and scanning electron microscopy. Previous molecular characterisation, using SCAR markers, showed consistency with other M. exigua populations from coffee. However, RAPD analysis showed high polymorphism (43.1-57.8%) but with 100% bootstrap su ...
livestock production; liquid manure; manure storage; pig manure; Brazil
Abstract:
... Animal production has changed from subsistence to an industrial model, lowering production costs but giving rise to higher potential environmental impact. When the effluents are not correctly managed, serious pollution events can occur. In Brazil liquid manure is commonly stored in reception pits or covered lagoons (biodigestors), followed by land application as a biofertilizer. In some regions th ...
... The aims of this study were to determine the aflatoxigenic mycoflora and the incidence of aflatoxin B₁ in commercial samples of ready dog food. This in turn demonstrated the ability of the Aspergillus flavus and Aspergillus parasiticus strains to produce aflatoxin B₁. 180 samples (standard, premium and super premium) were collected. Aspergillus was the prevalent genera followed by Penicillium and ...
Brazil nuts; European Union; aflatoxins; atmospheric pressure; bags; commercialization; environmental factors; exports; ionization; mass spectrometry; relative humidity; temperature; water activity; water content; Amazonia; Brazil
Abstract:
... Dry in-shell and shelled Brazil nuts from two different harvests were evaluated for aflatoxins by LC-tandem mass spectrometry with atmospheric pressure chemical ionisation in the positive mode. A total of 171 samples of Brazil nuts for export, comprising 108 in-shell and 63 shelled (large, medium and small sizes) were collected in a factory located at Manaus city, State of Amazonas, in the Brazili ...
Mugil cephalus; economic resources; gonadosomatic index; life history; longevity; maturity stage; models; mortality; Argentina; Brazil
Abstract:
... Species of Mugilidae are an important economic resource supporting several small communities in Argentina and Brazil through fishing. The growth parameters of the von Bertalanffy model, age limit (t₀.₉₅) and natural mortality (M) for the striped mullet (Mugil platanus) Günther, 1880, in the Mar Chiquita coastal lagoon (37°32'S-57°19'W) were estimated. These results constitute the first estimated v ...
... Prior to deforestation, São Paulo State had 79,000 km² covered by Cerrado (Brazilian savanna) physiognomies, but today less than 8.5% of this biodiversity hotspot remains, mostly in private lands. The global demand for agricultural goods has imposed strong pressure on natural areas, and the economic decisions of agribusiness managers are crucial to the fate of Cerrado domain remaining areas (CDRA) ...
history; agroecosystems; sustainable agriculture; case studies; Germany; United States; France; Brazil
Abstract:
... Agroecology involves various approaches to solve actual challenges of agricultural production. Though agroecology initially dealt primarily with crop production and protection aspects, in recent decades new dimensions such as environmental, social, economic, ethical and development issues are becoming relevant. Today, the term `agroecology' means either a scientific discipline, agricultural practi ...
... The spider lamb syndrome (SLS) is an autosomal recessive condition of sheep, characterized by severe bone lesions. The disease is caused by a mutation at codon 700 of the gene fibroblast growth factor receptor 3 (FGFR3), resulting in a valine (V) to glutamate (E) substitution, and leading to an abnormal bone growth. Congenital diseases as SLS may have an important impact on animal production. The ...
... Most tropical forest landscapes are modified by humans, but the effects of these changes on rural hunting patterns and hunted vertebrate populations remain poorly understood. We investigated subsistence hunting patterns across a highly heterogeneous landscape mosaic in the Brazilian Amazon, where hunters from three villages had access to primary forest, active and fallow agricultural fields, and a ...
Amanita; semiarid zones; new species; fungal anatomy; Brazil
Abstract:
... Amanita lippiae is described as a new species from a semi-arid (caatinga) region of northeastern Brazil. It possesses clampless basidia and elongate to nearly cylindrical inamyloid basidiospores, bears irregular remains of universal veil on the stipe bulb and is a gemmatoid species assignable to Amanita sect. Amanita. ...
Amanita; mushrooms; mycorrhizal fungi; ectomycorrhizae; new species; fungal anatomy; taxonomic keys; tropical rain forests; Brazil
Abstract:
... We described and illustrated Amanita viscidolutea sp. nov. from specimens collected in the state of Rio Grande do Norte, northeastern Brazil. The main characteristics of the new species are its yellow pileus with white margin, the viscidity of the pileal surface, an exannulate stipe and inamyloid basidiospores. We also present an artificial dichotomous key to Central and South American species of ...
rivers; watershed hydrology; floods; stream channels; Amazon River; Brazil
Abstract:
... A bathymetric survey of 575km of the central Amazon River and one of its tributaries, the Purus, are combined with gauged data to characterise the Amazon flood wave, and for hydraulic modelling of the main channel for the period June 1995-March 1997 with the LISFLOOD-FP and HEC-RAS hydraulic models. Our investigations show that the Amazon flood wave is subcritical and diffusive in character and, d ...
Bactris gasipaes; vegetables; agroforestry; plant genetic resources; information; case studies; environmental monitoring; decision making; data collection; information management; landscapes; social environment; forest ecology; forest management; environmental protection; biodiversity; wild plants; introgression; Brazil
Abstract:
... Evaluation and monitoring are critical to agroforestry (AFS) project management, especially if they aim to contribute to use and conservation of biodiversity and plant genetic resources. A methodology to analyze information used in decision-making processes was developed and applied in a biodiversity conservation project in the Brazilian Amazon. Quality of information gathered at landscape, AFS, s ...
fisheries management; fishing boats; politics; production technology; information systems; fishermen; fish; stakeholders; shrimp; fisheries; Brazil
Abstract:
... Sustainability and management issues are discussed for eight fishery production systems (FPS) in the state of Paraná, Brazil, from an interdisciplinary perspective. FPS were defined after a set of multidisciplinary classification criteria, in an attempt to conceive fishing activities as a new level of integration between natural and social systems. Systems were compared using the Rapid Appraisal o ...
carbon dioxide; shade tolerance; gas exchange; Orchidaceae; photosynthesis; roots; leaves; Brazil
Abstract:
... This study compares photosynthetic and structural features of Dichaea cogniauxiana and Epidendrum secundum leaves and roots. The diurnal titratable acidity fluctuations indicated crassulacean acid metabolism (CAM) in E. secundum leaves, associated with anatomical features like thick cuticle, large and vacuolated cells, and reduced stomata size and frequency. Roots of both species had chloroplasts ...
... A new treatment protocol was developed to analyze pollen residues found in nests of Centris tarsata Smith harvested from nest-traps. The study area was located in the Canudos Biological Station in the municipality of Canudos (09°56'34"S; 38°59'17"W), in the northeastern micro-region of Bahia State, Brazil. The local vegetation is an open caatinga (deciduous dryland vegetation), the regional climat ...
Peperomia; Pleurothallis; altitude; case studies; deciduous forests; ecology; epiphytes; flora; woody plants; Brazil
Abstract:
... Epiphytes play an important role in the flora and ecology of the tropical regions. Most floristic studies within the state of Minas Gerais focus on terrestrial, woody plant diversity, but this is a different approach, looking at epiphytic angiosperms in three highland areas in Southeastern Minas Gerais, namely Mata do Baú (MB), Reserva Biológica da Represa do Grama (RBRG) and Parque Estadual de Ib ...
animals; antlers; bucks; feces; metabolites; photoperiod; Brazil
Abstract:
... Annual variations in fecal androgen metabolites (FAM) and antler cycle were analyzed in six red brocket bucks exposed to a natural photoperiod in southeast Brazil. Fecal samples and antlers status data were collected weekly during a 1-year period. Four animals were in hard antler throughout the year, whereas one individual cast antlers in September and other took several months to completely shed ...
calves; cattle diseases; gastrointestinal nematodes; trichlorfon; Cooperia; Haemonchus placei; Trichuris; nematode infections; drug evaluation; drug resistance; oral administration; subcutaneous injection; ivermectin; Brazil
Abstract:
... Infected calves from two different rural estates in Brazil were studied to assess the anthelmintic efficacy of oral trichlorfon against naturally occurring ivermectin resistant parasitic nematode strains. In experiment I, infected animals were from a region where ivermectin resistant populations of Haemoncus placei, Cooperia punctata, Cooperia spatulata and Trichuris discolor have recently been id ...
... Ethnopharmacological relevance: Taiuiá or tayuya (Cayaponia tayuya, Cucurbitaceae) is a climbing, lignified plant with a large swollen root that has traditionally been used as an anti-inflammatory and anti-rheumatic agent in the folk medicine of Brazil, Peru, and Colombia. The aim of the study: We have assayed the pharmacological properties of a flavonoid fraction obtained from the butanol extrac ...
Moraes, Weuller F. de; Matos, Lecia G. de; Nascimento, Marcus Vinicius Mariano; Paula, Jose Realino de; Bara, Maria Teresa F.; Cunha, Luiz Carlos da; Valadares, Marize C.; Costa, Elson Alves
Lythraceae; medicinal plants; medicinal properties; antidepressants; mice; animal models; plant extracts; herbal medicines; central nervous system; males; locomotion; dosage; dose response; acute effects; long term effects; Brazil
Abstract:
... Ethnopharmacological relevance: Lafoensia pacari A. St.-Hil. (Lythraceae) has been referred in Brazilian traditional medicine for the treatment of different diseases, among them depression. Nevertheless, there are not studies about this possible effect on the central nervous system (CNS). Aim of the study: To evaluate the antidepressant-like effects of the ethanolic extract of Lafoensia pacari (PE ...
... Aim of study: Blechnum occidentale L. is a terrestrial fern that ranges from the United States to South America, and is employed in Brazilian folk medicine. In the present study we investigated the antinociceptive and antiinflammatory activities of the methanolic extract of Blechnum occidentale L. (MEB) in animal models of pain and inflammation to support its medicinal use in treatment of inflamma ...
Padilha, Marina de Mesquita; Vilela, Fabiana Cardoso; Silva, Marcelo Jose Dias da; Santos, Marcelo Henrique dos; Alves-da-Silva, Geraldo; Giusti-Paiva, Alexandre
Sandra Aparecida de Assis; José Carlos Rebuglio Vellosa; Iguatemy Lourenço Brunetti; Najeh Maissar Khalil; Kátia Maria da Silva Cerqueira Leite; Antonio Baldo Geraldo Martins; Olga Maria Mascarenhas de Faria Oliveira
... The antioxidant activity, ascorbic acid and phenolic content were studied in 10 exotic fruits from Brazil: abiu, acerola, wax jambu, cashew, mamey sapote, carambola or star fruit, Surinam cherry, longan, sapodilla and jaboticaba. The ascorbic acid was determined by 2,6-dichloroindophenol titrimetic methods and total phenols were measured colorimetrically using the Folin–Ciocalteu reagent. The anti ...
vitamin content; fruit pulp; fruit composition; food analysis; fiber content; raw vegetables; health promotion; mineral content; anthocyanins; raw fruit; quantitative analysis; antioxidant activity; vegetable extracts; free radicals; free radical scavengers; indigenous species; vegetables; frozen fruit; Brazil
Abstract:
... Several epidemiological and research studies suggest that a high intake of foods rich in natural antioxidants increases the antioxidant capacity of the plasma and reduces the risk of some kinds of cancers, heart diseases, and stroke. These health benefits are attributed to a variety of constituents, including vitamins, minerals, fiber, and numerous phytochemicals, such as flavonoids. Thus, in addi ...
antioxidants; Capsicum chinense; chemical constituents of plants; provenance; beta-carotene; ascorbic acid; phenols; food composition; capsaicin; Belize; Brazil; Colombia; Ecuador; Mexico; Peru; Puerto Rico; United States
Abstract:
... The main objective of this investigation was to evaluate fruits of C. chinense accessions for their concentration of β-carotene, ascorbic acid, and phenols for use as parents in breeding for these phytochemicals. Mature fruits of 63 accessions of C. chinense originally acquired from Belize, Brazil, Colombia, Ecuador, Mexico, Peru, Puerto Rico, and the United States were analyzed for their chemical ...
medicinal plants; plant extracts; protective effect; butanol; animal disease models; traditional medicine; acute toxicity; mice; rats; ursolic acid; antioxidant activity; anti-ulcer activity; oleanolic acid; methanol; nitric oxide; gastric mucosa; Vochysia; digestive system diseases; chemical constituents of plants; Brazil
Abstract:
... Aim of the study: Vochysia tucanorum is an important medicinal plant used in the Cerrado of Brazil against gastric disorders and this study reveals the pharmacological action of this traditional medicine use. Materials and methods: The methanolic extract (E-MeOH) and buthanolic fraction (Fr-Bu) obtained from V. tucanorum were challenged by different necrotizing agents in rodents. NO-synthase inhib ...
... Aim of the study: Magnolia ovata (A.St.-Hil.) Spreng (formerly Talauma ovata), known as “pinha-do-brejo” or “baguaçu”, is a large tree widely distributed in Brazil. Its trunk bark has been used in folk medicine against fever. However, no data have been published to support the antipyretic ethnopharmacological use. This study investigated the antipyretic and anti-inflammatory effects of the ethano ...
Hiruma-Lima, Clélia Akiko; Batista, Leonia Maria; de Almeida, Ana Beatriz Albino; de Pietro Magri, Luciana; dos Santos, Lourdes Campaner; Vilegas, Wagner; Brito, Alba Regina Monteiro Souza
in vivo studies; epicatechin; resins; Virola surinamensis; medicinal plants; plant extracts; gastritis; mass spectrometry; oral administration; indomethacin; animal disease models; traditional medicine; anti-ulcer activity; gastric mucosa; inflammation; pH; chemical constituents of plants; bark; rodents; Brazil
Abstract:
... Ethnopharmacological relevance: Virola surinamensis (Myristicaceae), popularly known as “mucuíba”, “ucuuba” or “ucuúba do igapó” is a large tree that grows abundantly in “Várzea” forest and on river banks in the Brazilian states of Amazonas and Tocantins. The resin obtained by cuts on the stem bark is a reputed folk remedy in its natural form for the treatment of ulcer, gastritis, inflammation ...
... Baccharis dracunculifolia DC (Asteraceae), a native plant from Brazil, commonly known as 'Alecrimdo-campo' is widely used in folk medicine to treat inflammation, hepatic disorders and stomach ulcers, and it is the most important botanical source of Southeastern Brazilian propolis, known as green propolis. Its essential oil is composed of non-oxygenated and oxygenated terpenes. In this work, the ef ...
... The aim of this study was to evaluate the presence of filamentous fungi and yeasts on the external surface of ants at hospitals. From March 2007 to February 2008, 2,899 ants were evaluated in two public hospitals in the city of Fortaleza, Ceará, in northeastern Brazil. The ants were attracted by nontoxic baits, distributed within critical and semicritical hospital areas. The fungi were identified ...