Populational fluctuation and spatial distribution of Alphitobius diaperinus (Panzer) (Coleoptera; Tenebrionidae) in a poultry house, Cascavel, Parana state, Brazil.

    Get PDF
    Abstract Knowledge of the population fluctuation and spatial distribution of pests is fundamental for establishing an appropriate control method. The population fluctuation and spatial distribution of the Alphitobius diaperinus in a poultry house in Cascavel, in the state of Parana, Brazil, was studied between October, 2001 and October 2002. Larvae and adults of the lesser mealworm were sampled weekly using Arends tube traps (n = 22) for six consecutive flock grow-outs. The temperature of the litter and of the poultry house was measured at the same locations of the tube traps. Beetle numbers increased continuously throughout all the sampling dates (average 5,137 in the first week and 18,494 insects on the sixth week). Significantly greater numbers of larvae were collected than adults (1 to 20 times in 95% of the sampling points). There was no correlation between temperature and the number of larvae and adults collected, therefore no fluctuation was observed during the sampling period. The population growth was correlated to litter re-use. The highest temperatures were observed in deep litter. The spatial distribution of larvae and adults in the poultry house was heterogeneous during the whole period of evaluation. Results suggest that monitoring in poultry houses is necessary prior to adopting and evaluating control measures due to the great variability of the insect distribution in the poultry house. Keywords: lesser mealworm, poultry house, temperature, population dynami

    The genetics of symbiotic nitrogen fixation: comparative genomics of 14 Rhizobia Strains by resolution of protein clusters.

    Get PDF
    The symbiotic relationship between legumes and nitrogen fixing bacteria is critical for agriculture, as it may have profound impacts on lowering costs for farmers, on land sustainability, on soil quality, and on mitigation of greenhouse gas emissions. However, despite the importance of the symbioses to the global nitrogen cycling balance, very few rhizobial genomes have been sequenced so far, although there are some ongoing efforts in sequencing elite strains. In this study, the genomes of fourteen selected strains of the order Rhizobiales, all previously fully sequenced and annotated, were compared to assess differences between the strains and to investigate the feasibility of defining a core ?symbiome??the essential genes required by all rhizobia for nodulation and nitrogen fixation. Comparison of these whole genomes has revealed valuable information, such as several events of lateral gene transfer, particularly in the symbiotic plasmids and genomic islands that have contributed to a better understanding of the evolution of contrasting symbioses. Unique genes were also identified, as well as omissions of symbiotic genes that were expected to be found. Protein comparisons have also allowed the identification of a variety of similarities and differences in several groups of genes, including those involved in nodulation, nitrogen fixation, production of exopolysaccharides, Type I to Type VI secretion systems, among others, and identifying some key genes that could be related to host specificity and/or a better saprophytic ability. However, while several significant differences in the type and number of proteins were observed, the evidence presented suggests no simple core symbiome exists. A more abstract systems biology concept of nitrogen fixing symbiosis may be required. The results have also highlighted that comparative genomics represents a valuable tool for capturing specificities and generalities of each genome

    Application of bayesian inference in animal breeding using the Intergen program: manual of version 1.2.

    Get PDF
    Introduction; What?s New in Version 1.2; Parameter file; How to run the program; How to continue an ongoing chain; Output files

    Production, breeding and potential of cowpea crop in Brazil.

    Get PDF
    About 50 years ago cowpea was reported as a relatively minor tropical legume. However, in the last years, it has been emerging as one of the most important food legume of the 21st century (SINGH, 2010). Brazil is not out of this panorama. Brazilian agriculture is undergoing major technological changes and, in addition, globalization in agribusiness has caused impacts on the production chain of several crops, particularly those heavily dependent on the use of a large volume of agricultural inputs, mainly fertilizers and pesticides. Such crops have had a higher production cost each year. On the other hand, this situation has brought new opportunities. Business farmers have sought new alternatives for their production arrangements. In this context cowpea constitutes one of the best options

    Tan spot disease of wheat: race characterization.

    Get PDF

    Destaques, perspectivas e problemas da EMBRAPA.

    Get PDF
    Modelo institucional; Recursos humanos; Infra-estrutura física; Integração institucional; Geração de tecnologia autoctone e apoio do Governo Sarney; O choque tecnológico na agricultura; Retornos sociais dos investimentos realizados; Perspectivas.bitstream/item/87585/1/Destaques-perspectivas.pd

    Análise comparativa das bibliotecas jQuery e Dojo.

    Get PDF
    A fim de obter melhor desempenho no desenvolvimento do sistema web, deve-se levar em consideração alguns aspectos importantes na escolha da biblioteca como: linguagem, documentação, qualidade e compatibilidade entre os navegadores. Com o objetivo de auxiliar a escolha de uma biblioteca JavaScript, este trabalho apresenta uma análise comparativa das bibliotecas jQuery e Dojo que possuem códigos de funções, classes, manipulação do DOM, entre outros, o que facilita o desenvolvimento de aplicações. O restante deste documento está organizado da seguinte forma: a próxima seção apresenta os aspectos relevantes na escolha da biblioteca; a seção 2 descreve o uso da biblioteca Dojo no sistema Agritempo; a seção 3 apresenta as diretrizes para a escolha de uma biblioteca e, finalmente, são apresentadas as considerações finais
    Infoteca-eis based in BR
    Access Repository Dashboard
    Do you manage Infoteca-e? Access insider analytics, issue reports and manage access to outputs from your repository in the CORE Repository Dashboard! CORE Repository Dashboard!