Metazoa
Mostrando 1-12 de 74 artigos, teses e dissertações.
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1. Novos registros de hospedeiros para espécies de pentastomídeos do Brasil
Pentastomida é um táxon de organismos parasitas obrigatórios de sistema respiratório de vertebrados, principalmente répteis. Embora esse táxon seja muito importante para a compreensão da filogenia dos Metazoa, tem recebido pouca atenção. No Brasil, existem poucas coleções que abrigam espécies de pentastomídeos, quais sejam: a Coleção Helmintol
Brazilian Journal of Biology. Publicado em: 2012-05
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2. Avaliação de metazoarios parasitos de Hoplias malabaricus (Bloch, 1794) (Pisces: Erythrinidae) como potenciais indicadores de qualidade ambiental / Assessment metazoan parasites of Hoplias malabaricus (Bloch, 1794) (Pisces: Erythrinidae) as potential indicators of environmental quality
Este estudo teve como objetivo a associação entre os índices hematológicos de Hoplias malabaricus (traíra), o parasitismo por monogeneas e outras espécies de metazoários e os fatores ambientais. O estudo ocorreu nas lagoas do CEPTA/ICMBio, localizada no município de Pirassununga, SP (21º55 55"S e 47º22 37"W), no período de fevereiro de 2008 a mar�
Publicado em: 2009
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3. Polychaeta, Annelida, and Articulata are not monophyletic: articulating the Metameria (Metazoa, Coelomata)
Polychaetes are metameric worms recognized for having parapodia, chaetae, and nuchal organs. Some authors have extended the Annelida to include Pogonophora, Echiura, and Clitellata. These suggestions are insufficient to generate a monophyletic group. They do not take into account two very large and important clades that in a cladistic analysis at a higher le
Revista Brasileira de Zoologia. Publicado em: 2003-03
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4. Eicosanóides na Biologia de Insetos
Prostaglandinas e eicosanóides relacionados são metabolitos oxigenados de certos ácidos graxos poli-insaturados C20 . Eicosanóides são melhor entendidos em relação à sua significância clínica em medicina humana. Sugerimos um novo e mais amplo significado para os eicosanóides, o qual chamamos 'paradigma biológico'. Sob esse aspecto, notamos que ei
Neotropical Entomology. Publicado em: 2002-07
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5. Comparative analysis of complete genomes reveals gene loss, acquisition and acceleration of evolutionary rates in Metazoa, suggests a prevalence of evolution via gene acquisition and indicates that the evolutionary rates in animals tend to be conserved
In this study we systematically examined the differences between the proteomes of Metazoa and other eukaryotes. Metazoans (Homo sapiens, Ceanorhabditis elegans and Drosophila melanogaster) were compared with a plant (Arabidopsis thaliana), fungi (Saccharomyces cerevisiae and Schizosaccaromyces pombe) and Encephalitozoan cuniculi. We identified 159 gene famil
Oxford University Press.
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6. MmtDB: a Metazoa mitochondrial DNA variants database.
The present paper describes the structure of MmtDB-a specialized database designed to collect Metazoa mitochondrial DNA variants. Priority in the data collection is given to the Metazoa species for which a large amount of variants is available, as it is the case for human variants. Starting from the sequences available in the Nucleotide Sequence Databases, t
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7. Origin of the Metazoa.
The origin of the multicellular animals has been investigated by rate invariant analysis of 18S rRNA sequences. These analyses indicate that (i) the Metazoa is a monophyletic taxon; (ii) the Deuterostomia is a monophyletic taxon; (iii) the Annelida-Mollusca lineage is the sister group of an arthropod subgroup; and (iv) the last common ancestor of the Annelid
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8. A receptor tyrosine kinase from choanoflagellates: Molecular insights into early animal evolution
The evolution of the Metazoa from protozoans is one of the major milestones in life's history. The genetic and developmental events involved in this evolutionary transition are unknown but may have involved the evolution of genes required for signaling and gene regulation in metazoans. The genome of animal ancestors may be reconstructed by identificatio
The National Academy of Sciences.
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9. Update of MmtDB: a Metazoa mitochondrial DNA variants database.
The present paper describes the improvements in MmtDB, a specialised database designed to collect Metazoa mitochondrial DNA variants. Priority in the data collection has been given to Metazoa for which a large amount of variants is available, e.g., for humans. Starting from the sequences available in the Nucleotide Sequence Databases, the redundant sequences
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10. Did homeodomain proteins duplicate before the origin of angiosperms, fungi, and metazoa?
Homeodomain proteins are transcription factors that play a critical role in early development in eukaryotes. These proteins previously have been classified into numerous subgroups whose phylogenetic relationships are unclear. Our phylogenetic analysis of representative eukaryotic sequences suggests that there are two major groups of homeodomain proteins, eac
The National Academy of Sciences of the USA.
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11. Photoreactivating-enzyme activity in metazoa.
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12. Comprehensive analysis of the base composition around the transcription start site in Metazoa
BioMed Central.