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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 ...
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 ...
... 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 ...
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 ...
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) ...
... 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 ...
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. ...
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 ...
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 ...
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 ...
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 ...
... 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 ...
fish farms; strains; farmed fish; phenotype; Oreochromis niloticus; tilapia (common name); disease severity; aquatic habitat; Streptococcus agalactiae; pathotypes; pathogenesis; virulence; bacterial infections; risk factors; disease outbreaks; emerging diseases; disease transmission; environmental factors; fish diseases; genetic variation; signs and symptoms (animals and humans); Brazil
Abstract:
... Streptococcus agalactiae is an emerging pathogen in Nile tilapia (Oreochromis niloticus) worldwide. To investigate aspects of the epidemiology, transmission and virulence of S. agalactiae infections, nine outbreaks of meningoencephalitis and septicemia in Nile tilapia farms in Brazil were analyzed. Records from the outbreaks revealed large variation in the weight of fish affected, high mortality, ...
Biological Sciences; Cephalopholis; coasts; fisheries; mortality; surveys; Brazil
Abstract:
... Age and size composition samples of Cephalopholis fulva from the central coast of Brazil were collected from research surveys and from line fishery landings between 1997 and 1999. The samples suggest that the submarine banks located further offshore are characterized by having fish larger than those caught in the continental shelf area. Although the oldest specimens were caught in the continental ...
... This study evaluated the production of cellulolytic enzymes by an Aspergillus fumigatus strain, isolated from sugar cane bagasse, according to its ability to grow on microcrystalline cellulose as the sole carbon source. The effect of the carbon source (brewer's spent grain, sugarcane bagasse, and wheat bran) and of the nitrogen source (corn steep liquor and sodium nitrate) on cellulase production ...
... Background, aim, and scope The presence of labile chromate in the soils is an environmental problem because of its high toxicity. The isotopic exchange kinetics (IEK) methods have been shown to be a useful tool to measure the phytoavailability of major (P, K) and trace elements (Cd, Zn, Ni, Pb) in soils. This study focused on the potential of applying IEK for chromate to characterize its availabil ...
aquifers; basins; data analysis; geographic information systems; groundwater; groundwater recharge; models; rivers; watersheds; wells; Brazil
Abstract:
... The groundwater recharge and water fluxes of the Guarani Aquifer System in the state of Sao Paulo in Brazil were assessed through a numeric model. The study area (6,748 km²) comprises Jacaré-Guaçú and Jacaré-Pepira River watersheds, tributaries of the Tietê River in the central region of the state. GIS based tools were used in the storage, processing and analysis of data. Main hydrologic phenomena ...
food service workers; food handling; food safety education; microbiological quality; hand washing; public schools; school food service; food sanitation; hygiene; Brazil
air pollution; indicator species; Tradescantia; bioassays; plant damage; DNA damage; pollen; human health; cardiovascular diseases; respiratory tract diseases; neoplasms; mortality; human diseases; risk assessment; correlation; Brazil
Abstract:
... The present study was designed to explore the correlation between the frequency of micronuclei in Trad-MN, measured across 28 biomonitoring stations during the period comprised between 11 of May and 2 of October, 2006, and adjusted mortality rates due to cardiovascular, respiratory diseases and cancer in Sao José dos Campos, Brazil, an area with different sources of air pollution. For controlling ...
... The occurrence of the sugarcane weevil Sphenophorus levis Vaurie is important in sugarcane in some regions in Brazil. Damage is caused by the larvae as they bore into the nodes and can reach 30 ton/ha/year. Many control alternatives have been attempted, but none were satisfactory, except for the use of toxic baits. Therefore, it is necessary to optimize their efficiency or to propose new technique ...
... The objective of this study was to detect and identify the autochthonous microbiota of raw milk with antagonistic activity on Listeria monocytogenes and Salmonella Enteritidis. Three hundred sixty colonies isolated from 15 raw milk samples were tested for antagonistic activity for L. monocytogenes and S. Enteritidis using the "spot-on-the-lawn" method. The colonies detected as antagonistic were id ...
Food and Drug Administration; absorption; blood plasma; confidence interval; hexanols; humans; liquid chromatography; liquid-liquid extraction; mass spectrometry; solid phase extraction; solvents; volunteers; Brazil; United States
Abstract:
... A new automated SPE-LC-ESI-MS/MS method was developed and validated to quantify venlafaxine in human plasma using fluoxetine as an internal standard. The analytes were automatically extracted from plasma by C18 SPE cartridges, separated on a C8 RP column and analyzed by MS in the multiple reaction-monitoring (MRM) mode. The method has a chromatographic run time of 4.0 min and a linear calibration ...
... A cross-sectional survey was conducted to estimate the occurrence of malaria infection among captive psittacine birds (n =127) from three zoological gardens in Brazil. Malaria infection was evaluated by the association of direct examination of blood smears with amplification of the 18SSU rRNA gene of the Plasmodium genus, demonstrating an overall occurrence of 36%. Most infected bird species were ...
Delphinidae; boats; breathing; coasts; dolphins; foraging; income; traffic; whales; Brazil
Abstract:
... Dolphin/whale watching activity represents the major source of income to many local communities, however many studies describe negative effects of this activity on animals' normal behavior. In this paper we describe a behavioral analysis of estuarine dolphins (Sotalia guianensis), proximity pattern and breathing synchrony during the first year after the delimitation of a coastal reserve and enforc ...
Nematoda; aquacultural and fisheries equipment; biomass; chlorophyll; fisheries; gears; hills; issues and policy; sand; shrimp; Brazil
Abstract:
... The influence of a passive shrimp fishing gear on benthic communities was studied at Laguna Estuarine System (South Brazil), a shallow choked coastal lagoon. The gear is composed by a group of fyke nets (25 mm mesh size) set in contact to the bottom, fixed with stakes forming a cage-like structure (around 30 m²). Samplings were conducted in the two main fishery areas of the estuarine system, Mirim ...
... Bernardius lineatus gen. n., sp. n. is described from a sandy beach at Tamandaré Bay, Brazil. It possesses the main characteristics of the family Enchelidiidae (Nematoda: Enoplida), but is unique by the presence of a body cuticle ornamented with longitudinal ridges formed by small rods, an entirely different character to all other members of the order Enoplida. The new genus is also characterised ...
... The aboriginal people of Amazon region cultivate the seje palm (Jessenia bataua) as a source of food and vegetable fiber. The oil, which is locally used mainly for medicinal purposes, is obtained from the palm fruits by artisanal procedures in which the fruit is heated in hot water and then the mass is pressed using a "sebucan." The chemical characteristics of virgin seje oils obtained from eight ...