79 research outputs found

    RECUPERAÇÃO DE OÓCITOS EQÜINOS COM Cumulus oophorus COMPACTO POR CURETAGEM DA PAREDE FOLICULAR

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    Este trabalho teve como objetivo determinar a eficiência da técnica de curetagem da parede folicular (scraping) para a obtenção de complexos Cumulus oophorus compactos, bem como descrever as etapas do processo. Submeteram-se ovários eqüinos coletados em abatedouro à dissecação da túnica albugínea, para identificação e individualização dos folículos com diâmetro entre 10 e 30 mm. Esses foram abertos individualmente em placa de Petri e, posteriormente, realizou-se raspagem da camada granulosa com auxílio de cureta e exame do líquido folicular em lupa estéreo-microscópica. Classificaram-se os oócitos quanto à integridade do ooplasma e as características das células do Cumulus oophorus. De um total de 527 ovários dissecados, obtiveram-se 3,5 folículos/ovário e uma média de 2,5 oócitos/ovário, compreendendo uma taxa de recuperação de 71,0% (oócitos/folículos), sendo 70,2% classificados como Cumulus oophorus compactos e ooplasma homogêneo. A média de oócitos Cumulus oophorus compactos por ovário foi de 1,7. A utilização da curetagem da camada granulosa de folículos entre 10 e 30 mm de diâmetro comprovou ser satisfatória para a obtenção de um elevado percentual de oócitos eqüinos com Cumulus oophorus compacto,o que é adequados para estudos de maturação in vitro. PALAVRAS-CHAVE: Curetagem da parede folicular, maturação in vitro, oócitos eqüinos, scraping

    Caderno de pós-graduação em direito: novas tendências do direito ambiental

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    Pioneirismo sempre foi uma característica do UniCEUB; outra característica é a evolução permanente. A Instituição sempre acompanhou a evolução tecnológica e pedagógica do ensino. Isso se coaduna com a filosofia institucional que é a de preparar o homem integral por meio da busca do conhecimento e da verdade, assegurando-lhe a compreensão adequada de si mesmo e de sua responsabilidade social e profissional. Destarte, a missão institucional é a de gerar, sistematizar e disseminar o conhecimento visando à formação de cidadãos reflexivos e empreendedores, comprometidos com o desenvolvimento socioeconômico sustentável. E não poderia ser diferente. Com a expansão do conteúdo acadêmico que se transpassa do físico para o virtual, do local para o universal, do restrito para o difundido, isso porque o papel não é mais apenas uma substância constituída por elementos fibrosos de origem vegetal, os quais formam uma pasta que se faz secar sob a forma de folhas delgadas donde se cria, modifica, transforma letras em palavras; palavras em textos; textos em conhecimento, não! O papel se virtualiza, se desenvolve, agora, no infinito, rebuscado de informações. Assim, o UniCEUB acompanha essa evolução. É dessa forma que se desafia o leitor a compreender a atualidade, com a fonte que ora se entrega à leitura virtual, chamada de e-book. Isso é resultado do esforço permanente, da incorporação da ciência desenvolvida no ambiente acadêmico, cujo resultado desperta emoção, um sentimento de beleza de que o conteúdo científico representa o diferencial profissional. Portanto, convido-os a leitura desta obra, que reúne uma sucessão de artigos que são apresentados com grande presteza e maestria; com conteúdo forte e impactante; com sentimento e método, frutos da excelência acadêmicaOrganizadores: Gabriel R. Rozendo Pinto, Leandro Soares Nunes, Naiara Ferreira Martins, Paulo Victor Lima, Pedro Almeida Costa, Pietro Pimenta, Rodrigo Gonçalves Ramos de Oliveir

    Pervasive gaps in Amazonian ecological research

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    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

    Pervasive gaps in Amazonian ecological research

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    ATLANTIC-CAMTRAPS: a dataset of medium and large terrestrial mammal communities in the Atlantic Forest of South America

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    Our understanding of mammal ecology has always been hindered by the difficulties of observing species in closed tropical forests. Camera trapping has become a major advance for monitoring terrestrial mammals in biodiversity rich ecosystems. Here we compiled one of the largest datasets of inventories of terrestrial mammal communities for the Neotropical region based on camera trapping studies. The dataset comprises 170 surveys of medium to large terrestrial mammals using camera traps conducted in 144 areas by 74 studies, covering six vegetation types of tropical and subtropical Atlantic Forest of South America (Brazil and Argentina), and present data on species composition and richness. The complete dataset comprises 53,438 independent records of 83 species of mammals, includes 10 species of marsupials, 15 rodents, 20 carnivores, eight ungulates and six armadillos. Species richness averaged 13 species (±6.07 SD) per site. Only six species occurred in more than 50% of the sites: the domestic dog Canis familiaris, crab-eating fox Cerdocyon thous, tayra Eira barbara, south American coati Nasua nasua, crab-eating raccoon Procyon cancrivorus and the nine-banded armadillo Dasypus novemcinctus. The information contained in this dataset can be used to understand macroecological patterns of biodiversity, community, and population structure, but also to evaluate the ecological consequences of fragmentation, defaunation, and trophic interactions. © 2017 by the Ecological Society of Americ

    Educomunicação e suas áreas de intervenção: Novos paradigmas para o diálogo intercultural

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    oai:omp.abpeducom.org.br:publicationFormat/1O material aqui divulgado representa, em essência, a contribuição do VII Encontro Brasileiro de Educomunicação ao V Global MIL Week, da UNESCO, ocorrido na ECA/USP, entre 3 e 5 de novembro de 2016. Estamos diante de um conjunto de 104 papers executivos, com uma média de entre 7 e 10 páginas, cada um. Com este rico e abundante material, chegamos ao sétimo e-book publicado pela ABPEducom, em seus seis primeiros anos de existência. A especificidade desta obra é a de trazer as “Áreas de Intervenção” do campo da Educomunicação, colocando-as a serviço de uma meta essencial ao agir educomunicativo: o diálogo intercultural, trabalhado na linha do tema geral do evento internacional: Media and Information Literacy: New Paradigms for Intercultural Dialogue

    Pervasive gaps in Amazonian ecological research

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    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

    Pervasive gaps in Amazonian ecological research

    Get PDF
    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

    The Genome of Anopheles darlingi, the main neotropical malaria vector

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    Anopheles darlingi is the principal neotropical malaria vector, responsible for more than a million cases of malaria per year on the American continent. Anopheles darlingi diverged from the African and Asian malaria vectors ∼100 million years ago (mya) and successfully adapted to the New World environment. Here we present an annotated reference A. darlingi genome, sequenced from a wild population of males and females collected in the Brazilian Amazon. A total of 10 481 predicted protein-coding genes were annotated, 72% of which have their closest counterpart in Anopheles gambiae and 21% have highest similarity with other mosquito species. In spite of a long period of divergent evolution, conserved gene synteny was observed between A. darlingi and A. gambiae. More than 10 million single nucleotide polymorphisms and short indels with potential use as genetic markers were identified. Transposable elements correspond to 2.3% of the A. darlingi genome. Genes associated with hematophagy, immunity and insecticide resistance, directly involved in vectorhuman and vectorparasite interactions, were identified and discussed. This study represents the first effort to sequence the genome of a neotropical malaria vector, and opens a new window through which we can contemplate the evolutionary history of anopheline mosquitoes. It also provides valuable information that may lead to novel strategies to reduce malaria transmission on the South American continent. The A. darlingi genome is accessible at www.labinfo.lncc.br/index.php/anopheles- darlingi. © 2013 The Author(s)
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