Terrestrial Large Mammals
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Mamíferos de maior porte em paisagens tropicais alteradas: seu papel em cascatas tróficas e fatores que determinam sua distribuição / Large mammals in altered tropical forest landscapes: their role in trophic cascade and factors that determine their distribution
Nesta dissertação investigamos o papel dos mamíferos em cascatas tróficas nas florestas tropicais, e os efeitos da configuração espacial e qualidade do habitat assim como das atividades humanas atuais sobre a distribuição de mamíferos de maior porte em uma paisagem rural de Mata Atlântica. No primeiro capítulo, através de uma revisão da literatu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/11/2011
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2. Composição e conservação das comunidades de mamíferos terrestres de médio e grande porte do Parque Estadual da Serra do Brigadeiro / Composition and conservation of the communities of medium and large sized terrestrial mammals in Parque Estadual da Serra do Brigadeiro
A composição, estrutura e dinâmica das comunidades de mamíferos terrestres de médio e grande porte foram estudadas no Parque Estadual da Serra do Brigadeiro (PESB), um fragmento de Mata Atlântica da região sudeste de Minas Gerais. Neste estudo foram selecionados três blocos de amostragem no norte do PESB para a coleta de dados durante o período de j
Publicado em: 2009
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3. Mamíferos terrestres de maior porte e a invasão de cães domésticos em remanescentes de uma paisagem fragmentada de Mata Atlântica: avaliação da eficiência de métodos de amostragem e da importância de múltiplos fatores sobre a distribuição das espécies / Terrestrial large mammals and invasion of domestic dogs in remnants of an Atlantic Forest fragmented landscape: evaluation of the efficiency of sampling methods and of the importance of multiple factors on species distribution.
Nessa dissertação, avaliei a eficiência e congruência de métodos para amostragem de mamíferos de maior porte e investiguei a influência de fatores múltiplos correlacionados, comuns em paisagens fragmentadas, sobre a distribuição destes animais em remanescentes de Mata Atlântica. Através de amostragens padronizadas em 24 remanescentes florestais d
Publicado em: 2009
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4. Trypanossoma cruzi: diversity, phylogenetics analysis and ecogeographic patterns of wild isolates. / Trypanosoma cruzi: diversidade, relações filogenéticas e padrões ecogeográficos de isolados silvestres.
T. cruzi comprises highly heterogeneous populations classified as TCI and TCIIa-e lineages. This study characterized large wild mammal and vector strains of various geographical origins, and human isolates from Amazonia. Phylogenetic analysis using SSU rDNA and Cyb genes inferred relationships among lineages and their biogeographic patterns. ITS1 rDNA and RA
Publicado em: 2008
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5. Habitat use by terrestrial mammals in fragments of deciduous seasonal forest / Uso de hábitat de mamíferos terrestres em fragmentos de floresta estacional decidual
The constant environmental degradation, in special the habitat fragmentation, has leading to alterations in mammal populations around de world. Into the Campos de Instrução de Santa Maria (CISM), Santa Maria, State of Rio Grande do Sul/Brazil, it is not different, since the human colonization has led to habitat loss and fragmentation. In this region the Ca
Publicado em: 2008
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6. The influence of the landscape structure pattern in assemblages communities of medium and large terrestrial mammals in the Vale do Ribeira Region - SP / Influência dos padrões estruturais da paisagem na comunidade de mamíferos terrestres de médio e grande porte na Região do Vale do Ribeira, Estado de São Paulo
Os estudos estabelecendo relações entre os dados biológicos e padrões espaciais têm contribuído para o entendimento de fenômenos ecológicos em escalas regionais e locais, mesmo que, ainda pouco se saiba sobre esses fenômenos. O enfoque dado a este estudo está voltado a uma interpretação da paisagem, no âmbito ecológico, de forma a entender o co
Publicado em: 2008
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7. Manejo do cálcio intracelular e influência da temperatura sobre a contratilidade cardíaca de Synbranchus marmoratus.
The present study anlyzed the in vivo and in vitro responses of the myocardium obtained from Synbranchus marmoratus acclimated at 25 C and tested at 15, 25 and 35 C. The in vivo heart rate (fH bpm) was measured during acute transitions in temperature and subsequent return to 25 C. ECG recordings (lead DI of the electrocardiography) were obtained of electrode
Publicado em: 2004
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8. Dramatic variation of the vomeronasal pheromone receptor gene repertoire among five orders of placental and marsupial mammals
Pheromones are chemicals emitted and sensed by conspecifics to elicit social and sexual responses and are perceived in terrestrial vertebrates primarily by the vomeronasal organ (VNO). Pheromone receptors in the mammalian VNO are encoded by the V1R and V2R gene superfamilies. The V1R superfamily contains 187 and 102 putatively functional genes in the mouse a
National Academy of Sciences.
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9. An IS711 Element Downstream of the bp26 Gene Is a Specific Marker of Brucella spp. Isolated from Marine Mammals
DNA polymorphism of the bp26 gene, coding for a diagnostic protein antigen for brucellosis, was assessed by PCR and restriction fragment length polymorphism analysis using primers to amplify the bp26 gene with its flanking regions. Surprisingly, whereas PCR performed on DNA of the reference strains of the six recognized Brucella species produced a product of
American Society for Microbiology.
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10. Cloning and localization of two multigene receptor families in goldfish olfactory epithelium
Goldfish reproduction is coordinated by pheromones that are released by ovulating females and detected by males. Two highly potent pheromones, a dihydroxyprogesterone and a prostaglandin, previously have been identified, and their effects on goldfish behavior have been studied in depth. We have cloned goldfish olfactory epithelium cDNAs belonging to two mult
The National Academy of Sciences.
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11. Olfactory expression of a single and highly variable V1r pheromone receptor-like gene in fish species
Sensory neurons expressing members of the seven-transmembrane V1r receptor superfamily allow mice to perceive pheromones. These receptors, which exhibit no sequence homology to any known protein except a weak similarity to taste receptors, have only been found in mammals. In the mouse, the V1r repertoire contains >150 members, which are expressed by neurons
National Academy of Sciences.
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12. Large sequence divergence among mitochondrial DNA genotypes within populations of eastern African black-backed jackals.
In discussions about the relative rate of molecular evolution, intraspecific variability in rate is rarely considered. An underlying assumption is that intraspecific sequence differences are small, and thus variations in rate would be difficult to detect or would not affect comparisons among distantly related taxa. However, several studies on mammalian mitoc