Mammals Predation
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Reproductive and feeding biology of the common lancehead Bothrops atrox (Serpentes, Viperidae) from central and southwestern Brazilian Amazonia
RESUMO A jararaca Bothrops atrox é uma serpente de ampla distribuição e de importância médica na Amazônia. Visto que a biologia reprodutiva e alimentar de serpentes varia geograficamente, nosso objetivo foi o de caracterizar a história natural de indivíduos provenientes das porções central e sudoeste do bioma no Brasil. Analisamos espécimes preser
Acta Amaz.. Publicado em: 06/05/2019
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2. Testing camera traps as a potential tool for detecting nest predation of birds in a tropical rainforest environment
ABSTRACT Identification of the predators of bird nests is essential to test ecological and evolutionary hypotheses and to make practical management decisions. A variety of nest monitoring devices have been proposed but many remain difficult to set up in the field. The aim of this study was to test camera traps as a potential tool to study predation of natura
Zoologia (Curitiba). Publicado em: 18/06/2018
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3. Seasonal and spatial differences in feeding habits of the Neotropical otter Lontra longicaudis (Carnivora: Mustelidae) in a coastal catchment of southeastern Brazil
The diet of the Neotropical otter Lontra longicaudis (Olfers, 1818) is one of the best known aspects of its biology throughout its distribution range. However, most dietary studies have been undertaken during short time periods, making it difficult to identify temporal patterns in the feeding behavior of the species. The present study aimed to describe the d
Zoologia (Curitiba). Publicado em: 2011-02
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4. Dinâmica populacional e efeitos de variáveis ambientais sobre a fauna de pequenos mamíferos em um fragmento de floresta com araucária no sul do Brasil
Natural populations of small rodents fluctuate continually over time and the population dynamics of any living organism are shaped by both intrinsic and extrinsic factors. Small mammals populations can show a continuum dynamic activity, ranging from stability to regular cycles of variable amplitude. The species dynamics is also known to be influenced by the
Publicado em: 2010
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5. Mamíferos de médio e grande porte em uma área alterada no cerrado : estrutura da comunidade, sobreposição de nicho e densidade
Medium and large sized mammals in a disturbed area in the Cerrado: community structure, niche overlap and density. Medium and large sized mammals are affected by fragmentation and habitat changes, and in Cerrado this group corresponds to species preferentially nocturnal, generalist in habitat use and with scarce information about density in modified environm
Publicado em: 2010
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6. Construction of arboreal nests by brown-nosed coatis, Nasua nasua (Carnivora: Procyonidae) in the Brazilian Pantanal
The construction of arboreal nests is rare among mammals in the order Carnivora. However, coatis (Procyonidae: Nasua Storr, 1780) build arboreal nests that are used for resting or birthing. Here we describe Nasua nasua (Linnaeus, 1766) nests located during a telemetry study of coatis in the Brazilian Pantanal. Coati nests were all "bird-like", that is, open
Zoologia (Curitiba). Publicado em: 2009-09
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7. Hyper abundant mesopredators and bird extinction in an Atlantic forest island
Islands can serve as model systems for understanding how biological invasions affect native species. Here we examine the negative effects of mesopredator mammals on bird richness at Anchieta Island, an 826 ha offshore island in the coast of Brazil. Anchieta Island has the highest density of mammals of the entire Atlantic forest, especially nest predators suc
Zoologia (Curitiba). Publicado em: 2009-06
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8. Prospecção de bradicininas de anfíbios do gênero Phyllomedusa
Amphibian skin has a crucial role on the survival and on the capacity of the animal of exploring the most different ambients, That is the reason why they are capable of producing the plethora of compounds, described as defensive mechanisms to avoid pathogen invasion or ingestion by predators. One of these compounds, known as bradykinin, is a nonapeptide orig
Publicado em: 2008
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9. Influência de frutos e sementes na abundância de pequenos mamíferos e a relação com a predação e dispersão de sementes de araucária (Araucaria angustifolia)
A predação de sementes, juntamente com a dispersão, é um dos principais fatores determinantes no recrutamento de novos indivíduos. Espécies de plantas que oscilam na produção de frutos e sementes podem influenciar os predadores e dispersores, alterando a resposta destes em anos de baixa ou alta oferta de recursos. A araucária (Araucaria angustifolia
Publicado em: 2008
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10. Artificial nest predation: application, challenges and perspectives for the tropical areas / Predação de ninhos artificiais: aplicações, desafios e perspectivas para as áreas tropicais
The natural predation of the nests has been suggested as the principal cause to the decline of bird population, acting on the performance and community structure. Due to the difficulty of natural nest localization and monitoring, the artificial nests are used as a fast alternative to check the avian reproductive success. The artificial nest studies are widel
Publicado em: 2007
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11. Feeding ecology of small mammals from Cerrado in southeastern Brazil / Ecologia alimentar de pequenos mamíferos de áreas de cerrado no Sudeste do Brasil
The herbivorous mammals in the Neotropics has been studied focusing on larger frugivorous species. However, small rodents and marsupials can perform the role of important selective agents by their trophic relationships. The objectives of this work were to describe the diet of some small mammals in natural remnants of Cerrado, to verify the existence of seaso
Publicado em: 2007
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12. Predation of small mammals by the barn owl (Tyto alba) and its role in the control of hantavirus natural reservoirs in a periurban area in the municipality of Uberlândia, Minas Gerais, Brazil / Predação de pequenos mamíferos por suindara (Tyto alba) e seu papel no controle de reservatórios naturais de hantavírus em uma área periurbana do município de Uberlândia, Minas Gerais, Brasil
Small mammals, especially rodents, are the main prey of the barn owl and its diet is considered an accurated reflex of the local fauna composition and populational flutuations. The principal objectives of this study were to inventory the species of small mammals in the outskirts of the Municipality of Uberlândia, MG, based on the analysis of regurgitated pe
Publicado em: 2006