A5069572269- Evolution and Paleontology Studies
- Wildlife Ecology and Conservation
- Bat Biology and Ecology Studies
- Scarabaeidae Beetle Taxonomy and Biogeography
- Fish biology, ecology, and behavior
- Parasite Biology and Host Interactions
- Animal Ecology and Behavior Studies
- Vector-borne infectious diseases
- Morphological variations and asymmetry
- Primate Behavior and Ecology
- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Mollusks and Parasites Studies
- Viral Infections and Vectors
- Amphibian and Reptile Biology
- Mediterranean and Iberian flora and fauna
- Species Distribution and Climate Change
- Plant and soil sciences
- Ecology and biodiversity studies
- Botanical Research and Chemistry
- Botanical Research and Applications
- Genetic diversity and population structure
- Wildlife-Road Interactions and Conservation
- Plant Taxonomy and Phylogenetics
- Aquatic Invertebrate Ecology and Behavior
Instituto Chico Mendes de Conservação da Biodiversidade
2024
Amazon (United States)
2024
Transdata (Brazil)
2024
Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão
2024
Universidade Estadual de Mato Grosso do Sul
2024
Multi Electrical System (Suriname)
2024
Lychnoflora (Brazil)
2024
Monsanto (Canada)
2024
Sofradir (France)
2024
Proteca (Brazil)
2024
Measures of traits are the basis functional biological diversity. Numerous works consider mean species-level measures while ignoring individual variance within species. However, there is a large amount variation species and it increasingly apparent that important to trait not only between species, but also Mammals an interesting group for investigating trait-based approaches because they play diverse ecological functions (e.g., pollination, seed dispersal, predation, grazing) correlated with...
Chewing on different food types is a demanding biological function. The classic assumption in studying the shape of feeding apparatuses that animals are what they eat, meaning adaptation to items accounts for most their interspecific variation. Yet, growing body evidence points against this concept. We use primate mandible as model structure investigate complex interplay among shape, size, diet, and phylogeny. find weak but significant impact diet variation primates whole not anthropoids...
Biodiversity inventories contain important information about species richness, community structure, and composition, are the first step in developing any conservation mitigation strategies. The Atlantic Forest of South America is home to around 334 small-, medium-, large-sized mammals, currently restricted less than 12% its original cover. Here, we present ATLANTIC MAMMALS, an open data set on medium- mammal assemblages Brazil, Paraguay, Argentina. A total 129 studies were compiled,...
Didelphis albiventris and D. aurita are Neotropical marsupials that share a unique evolutionary history both largely distributed throughout South America, being primarily allopatric their ranges. In the Araucaria moist forest of Southern Brazil these species sympatric they might potentially compete having similar ecology. For this reason, ideal biological models to address questions about ecological character displacement how closely related geographic space. Little is known two...
Abstract The effects of habitat fragmentation on different taxa and ecosystems are subject to intense debate, disentangling them is utmost importance support conservation management strategies. We evaluated the landscape composition configuration, spatial heterogeneity explain α‐ β‐diversity mammals across a gradient percent woody cover land use diversity. expected species richness be positively related all predictive variables, with strongest relationship respectively. also influence in...
Abstract Aim Because of their recent evolutionary radiation, capuchin monkeys represent an ideal group with which to investigate ecomorphological adaptations in relation geography and climate. Our aim was identify patterns both skull size shape variation capuchins environmental variables latitude. Location Tropical subtropical South America. Methods We performed geometric morphometric analyses 228 monkey individuals belonging either the genera Sapajus (seven species) or Cebus (two species),...
Spotted fever illness caused by the tick-borne pathogen Rickettsia parkeri has emerged in Pampa biome southern Brazil, where tick Amblyomma tigrinum is implicated as main vector. Because domestic dogs are commonly parasitized A. tigrinum, this canid also a suitable sentinel for R. parkeri-associated spotted fever. Herein, we investigate rickettsial infection ticks, and small mammals natural reserve of Brazil. The ticks aureolatum Rhipicephalus sanguineus were collected from dogs. Molecular...
The use of microhabitats by small mammals was investigated in an area Pampas southern Brazil. We used 10 transect lines with 12 live-traps during six fieldwork sessions between June 2009 and April 2010. Sixteen environmental variables measured were summarized a principal component analysis (PCA). Richness, total abundance each species captured correlated the first two PCA axes. also small-mammal through canonical correspondence (CCA). axis related to that characterize forest environments,...
In order to evaluate the efficiency of different mammalian survey methods, we compared traditional sampling techniques (use camera-traps on roads and artificial trails, track censuses, direct field visualization) with an alternative design (camera-traps positioned in natural areas such as trails shelters). We conducted study a deciduous Atlantic-Forest park southern Brazil, additionally our results previous intensive carried out same area. Our considerably smaller effort (example: 336...
Leptospirosis is a disease of worldwide distribution that affects man and several animal species. Domestic wild animals can behave as reservoirs the agent. The aim this study was to evaluate frequency anti-Leptospira spp. antibodies in dogs small mammals from rural properties conservation units three municipalities Rio Grande do Sul State, Brazil. Sera were collected 192 domestic 132 mammals, namely rodents Cricetidae Caviidae families marsupials Didelphidae family. used Microscopic...
Foram realizados levantamentos mensais em duas localidades no Município, fragmento da Vila Faguense e do Santuário de Schoenstatt, os quais distam entre si 1.500 m, março 2005 abril 2006. Em 140 horas amostragem foram registrados 3.123 indivíduos distribuídos 169 espécies. Nymphalidae foi a família mais amostrada com aproximadamente 53% das espécies registradas. Nove ainda não haviam sido registradas para o Estado. O índice Diversidade Shannon-Wiener maior Faguense, local menos perturbado....
In South America, the crab-eating fox Cerdocyon thous occurs in sympatry to ecologically similar, and phylogenetically close Lycalopex vetulus North, gymnocercus of its range. We studied character displacement under effect Bergmann's rule presence (or absence either) within performed skull shape analysis on 191 C. specimens divided them three distinct groups, depending whether or allopatry species. tested for differences size between groups regressed both sexual dimorphism against latitude...
O Estado do Rio Grande Sul possui, até o momento, registros para 38 das 168 espécies de morcegos ocorrentes no Brasil e possui extensas áreas carentes amostragem. Neste trabalho apresenta-se uma lista quirópteros município Frederico Westphalen extremo norte são fornecidas informações sobre a utilização edificações humanas minas abandonadas sete 25 registradas município. De outubro 2004 junho 2008 esforços amostrais foram realizados em onze visando inventariar quiropterofauna local. A...
How dispersal, environmental filters, and local extinctions affect species diversity depends on the requirements for habitat, dispersal limitations, abundance. Few studies have been able to properly separate these processes show how they beta patterns multiple organisms. We investigated composition of birds mammals changed along geographical gradients in an environmentally complex South American region. Using mantel tests a null model approach we disentangled effects environment, stochastic...
The exotic alien species Axis axis was introduced in the Americas at beginning of last century and since then has established itself, expanding its distribution. This is first record this Brazil. In extreme south country, an individual A. recorded with a camera trap Espinilho State Park. area close to border Uruguay Argentina, countries where from presumably originated. Pampas biome strongly disturbed by human activity Brazil many native mammal such as deer Ozotoceros bezoarticus are...
Wilfredomys, a monotypic genus of endangered sigmodontine rats, was historically related to the tribe Thomasomyini or considered "incertae sedis". Given no molecular data is available for phylogenetic position this taxon uncertain in relation modern, hypotheses relationships. We investigate phylogeny Wilfredomys provide hypothesis its within Sigmodontinae based on nuclear and mitochondrial DNA sequences. Bayesian maximum likelihood analyses recovered oenax as sister Wiedomys pyrrhorhinos,...
Abstract Knowledge about the feeding ecology of didelphid marsupials remains incipient, especially in environments with marked seasonality resource supply, such as Cerrado. We analysed diet composition Thylamys macrurus Cerrado patches central-western Brazil. also evaluated seasonal and sexual variation species’ diet, well if accumulation fat tail shows a pattern. obtained 87 captures 68 T. specimens 29 faecal samples. Six categories food items (Hymenoptera, Isoptera, Coleoptera, Arachnida,...
SUMMARY This study aimed to assess the contribution of hosts characteristics (rodents and marsupials) in organization ectoparasite communities present woodland patches western central Brazil. We verified effect host species, sex, body mass vertical strata addition role seasonality on composition, richness abundance. The total sampling effort was 22 032 trap-nights equally distributed 54 patches. Variance partition principal coordinate analysis were used verify existence significant...