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Acesso aberto (Open Access)
Biometria e barimetria da tartaruga da Amazônia, Podocnemis expansa (SCHWEIGGER, 1812), em sistemas comerciais
(Universidade Federal do Pará, 2008) PRINTES, Lanna Daniella dos Santos; ARAÚJO, Cláudio Vieira de; http://lattes.cnpq.br/5049897507837031
The Chelonians represent one of the main bilological resourses of the Amazon region and stand as a important food source for the people that live by the rivers. For that reason, the possibility of commercial rising came forth. Biometries have been made to develop barometric equations in order to determinate the biometry of the amazon turtle and evaluate functions that can be.used for the barometry of the animals at two commercial rinsing fields. Living weight records was used separate heavy and light samples to each site. Because the great variation of the living weight, it was converted to logarithmic scale. To compare two different levels of years and sites, a multivariated variance analysis was performed. A discriminating analysis was adopted by using a canonic variable. The great living weight variation in each year and site reveals that in samples with same age and origin, the animals show great heterogeneity for living weight. The result of the canonic correlation for two rising fields indicates that the living weight can be explained in 86% and 96% when a linear relation is established. Excepting the head width and tail length variables, all others demonstrated highly correlated to the living weight. Therefore, there are a high variation of the living weight among animals created in captivity. The biometries are highly related to the living weight and should be included in studies that seek barometry.
Acesso aberto (Open Access)
Manejo de Scaptotrigona Sp. (Hymenoptera, Apidae, Meliponini) para polinização da rambuteira (Nephelium Lappaceum L.)
(Universidade Federal do Pará, 2014-07-31) LEÃO, Kamila de Sousa; CONTRERA, Felipe Andrés León; http://lattes.cnpq.br/3815182976544230; VENTURIERI, Giorgio Cristino; http://lattes.cnpq.br/7180149611727426
Meliponini bees can be easily kept and they are important crop pollinators. This study aimed to manage a Scaptotrigona species to improve pollination in rambutan trees (Nephelium lappaceum L.). The first chapter analysed the phenological development (flowering and fruit phases) in rambutan crop. Two blossom periods per year were identified. The average cycle duration (from anthesis to harvest fruit point) was 123-128 days. The objective of the second chapter was evaluate the effect of Scaptotrigona sp. nests in rambutan fruit set. There were not significantly differences on rambutan fruit set upon bee presence or absence, although Scaptotrigona sp. presented high index of pollen fidelity to rambutan. The last chapter focused on a specific question about stingless beekeeping. It was tested whether a rational hive model (Embrapa) was better than a traditional hive (cabocla) for Scaptotrigona sp. management, by evaluating certain aspects, such as biological adaptation and management, . It was found that the studied hive (Embrapa) is a suitable model to rational creation of Scaptotrigona.
Acesso aberto (Open Access)
Pecuária e sustentabilidade: uma análise da produção de gado de corte em propriedades rurais no município de Paragominas, Estado do Pará
(Universidade Federal do Pará, 2016-09-29) AGUIAR, Andrea Farias do Nascimento; REBELLO, Fabrício Khoury; lattes.cnpq.br/8656930211054464; ADAMI, Marcos; lattes.cnpq.br/7484071887086439
Regulatory guidelines have in their policies the planning tool and transmutation of productive realities in man-environment relationship, making the market of the agricultural sector increasingly competitive and demanding as to reduce the impacts on climate, environment and society. The multiplicity of aspects involved delineate the transition to more sustainable production systems and dictate the pace of these changes. They also expose deep-rooted cultural traditions, technical and administrative deficiencies where individuals become synonymous with potentiation of economic matrix at the expense of social and environmental. Even before these contrasts the meaning of sustainability has been trivialized and used the favorable adjectives of agricultural production, whose practical realities in a broader context, not justify the positivism of marketing strategies. This case study aimed to evaluate the sustainability of beef cattle developed in properties located Paragominas, one of the Green Counties of Pará state. To this end, visits were undertaken in 17 properties taken as a reference in the region, of which collected productive, economic, social and environmental data with the help of special forms to characterize the producer profiles and landenvironmental production and properties. From the set of data indicators have been calculated, and established conformity in relation to the new sustainable guidelines based on Sustainable Livestock Working Group Criteria, chosen for its specificity and breadth policy. Both of them have been tabulated according to the categorized production systems. Emissions in GHGs and impacts on water resources were also estimated and perceptions of the main actors of the local livestock value chain recorded. The Barometer of Sustainability was the method of assessment used in both production level systems as the governing context. GHG emissions and impacts on water resources were calculated based on the methodology of the IPCC and Pereira (2012), respectively. The results showed that for the specific context of the production systems there was a concentration of properties ranging from the intermediate levels and potentially unsustainable. Increased the accuracy analysis for SFWG criteria, there was a downward migration to potentially unsustainable, and unsustainable levels, demonstrating the transience of any favorable status. Indicators of low productivity, profitability, costs efficiency, support of pasture capacity, recovery and job satisfaction were presented as recurring vulnerabilities in all systems analyzed. The environmental impacts demonstrate is proportional to the scale of production, coupled with the paradox that certain properties are fulfilling their social functions. The weak cohesion between the local livestock value chain agents is compounded by deficiencies of administration preventing the spread and consolidation of successful examples, as well as open space for practices focused on small groups of interests. Supported strategies for public-private partnerships, quality technical assistance and investments in Science, Technology and Innovation were recommended to overcome the specific disadvantages.