A5046186845- Evolution and Paleontology Studies
- Animal Ecology and Behavior Studies
- Wildlife Ecology and Conservation
- Bat Biology and Ecology Studies
- Species Distribution and Climate Change
- Genetic diversity and population structure
- Morphological variations and asymmetry
- Ecology and Vegetation Dynamics Studies
- Chromosomal and Genetic Variations
- Environmental DNA in Biodiversity Studies
- Avian ecology and behavior
- Marine animal studies overview
- Primate Behavior and Ecology
- Animal and Plant Science Education
- Parasite Biology and Host Interactions
- dental development and anomalies
- Physiological and biochemical adaptations
- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Fish Ecology and Management Studies
- Lichen and fungal ecology
- Comparative Animal Anatomy Studies
- Yersinia bacterium, plague, ectoparasites research
- Wildlife-Road Interactions and Conservation
- Ichthyology and Marine Biology
Universidade Federal do Rio Grande do Sul
2012-2024
Universidade Regional Integrada do Alto Uruguai e das Missões
2017-2020
Knowledge on biodiversity is fundamental for conservation strategies. The Brazilian Pampa region, located in subtropical southern Brazil, neglected terms of conservation, and knowledge its fragmented. We aim to answer the question: how many, which, species occur Pampa? In a collaborative effort, we built lists plants, animals, bacteria, fungi that Pampa. included information distribution patterns, main habitat types, status. Our study resulted referenced totaling 12,503 (12,854 taxa, when...
Biological invasion is one of the main threats to native biodiversity. For a species become invasive, it must be voluntarily or involuntarily introduced by humans into nonnative habitat. Mammals were among first taxa worldwide for game, meat, and labor, yet number in Neotropics remains unknown. In this data set, we make available occurrence abundance on mammal that (1) transposed geographical barrier (2) Neotropics. Our set composed 73,738 historical current georeferenced records alien which...
The Neotropical region hosts 4225 freshwater fish species, ranking first among the world's most diverse regions for fishes. Our NEOTROPICAL FRESHWATER FISHES data set is to produce a large-scale inventory, covering entire from Mexico and Caribbean in north southern limits Argentina, Paraguay, Chile, Uruguay. We compiled 185,787 distribution records, with unique georeferenced coordinates, represented by occurrence abundance data. number of species numerous orders are as follows: Characiformes...
Abstract Knowledge of how animal species use food resources available in the environment can increase our understanding many ecological processes. However, obtaining this information using traditional methods is difficult for feeding on a large variety items highly diverse environments. We amplified DNA plants 306 scat and 40 soil samples, applied an environmental metabarcoding approach to investigate preferences, degree diet specialization overlap seven herbivore rodent genus Ctenomys...
Subterranean rodents of the genus Ctenomys usually present an allopatric or parapatric distribution. Currently, two cases sympatry have been recognized for in coastal dunes southern Argentina and Brazil. In this context, they are ideal models to test hypotheses about factors that delimit patterns space use understand interspecific interactions small mammals. We investigated vegetation structure, plant biomass soil hardness selected by species subterranean (Ctenomys flamarioni C. minutus)...
Abstract For rodents that live underground, digging in highly compacted soils requires a higher energy expenditure than poorly soils. We tested how soil hardness affects the bite force as well shape and size of skulls mandibles tuco‐tucos. Our hypothesis is species inhabit harder would show stronger force, which should be reflected skull mandible, while living softer have weaker force. used 24 genus Ctenomys to estimate (through incisor strength formula) quantify mandible. Information on...
Abstract Species with similar ecological requirements coexisting in the same geographic region are prone to competitively exclude each other. Alternatively, they may coexist if character displacement acts change niche of one or both species. We used two methodological approaches (ecological modeling [ENM] and geometric morphometrics) test hypotheses: given their behavioral, morphological, similarities, species excludes other; and, enables coexistence at sites which known occur sympatry. The...
A major interest of evolutionary biologists is to understand which environmental features are associated with morphological and behavioural characteristics species. Intraspecific studies addressing this question provide the best evidence for ecology-driven evolution over short time scales. Here, we evaluated whether two adjacent habitats differ in soil hardness skull forelimb morphology estimated bite force between populations a single species from sand fields dunes. We used total 39 humeri...
Abstract Reproductive compatibility usually decreases according to increasing genetic difference and the time of divergence between species. However, amount modification required influence hybridization may vary in different Thus, it is extremely important conduct studies that seek understand what how variables reproductive isolation We have explored a system involving two species subterranean rodents present morphological, karyotypic, evolutionary history differences are capable generating...
Abstract We investigated the demographic parameters and relationships between population density extrinsic factors (temperature, rainfall, humidity insolation) of two sigmodontine rodents (
Abstract Subterranean rodents are characterized by limited individual mobility and patchy distribution of local populations. Habitat patches where the species is absent may either be unoccupied, but suitable patches, or in fact unsuitable as habitat due to specific features. In coastal plain southern Brazil, Ctenomys minutus (Ctenomyidae) inhabits sandy grasslands dunes. The aim our study was analyze relationship between this subterranean rodent its environment. We considered vegetation soil...
Abstract The environment physically limits animal movement and use of space. In the case subterranean rodents, natural selection is expected to favor burrow structures that minimize energetic costs digging. However, in some cases same species found habitats strongly differ resource availability soil characteristics, as Ctenomys minutus . This thus a good model which estimate influence habitat on behavioral characteristics such home‐range size. We evaluated sizes two C. populations inhabit...
The wildlife of the Brazilian Pampa is threatened by large-scale habitat loss, due in particular to expansion soybean cultivation and conversion grasslands areas into extensive silviculture. It essential study how mammal fauna copes with highly fragmented, human-influenced, non-protected landscape. Our presents results a survey large- medium-sized mammals typical human-influenced steppic savanna area biome. was conducted exclusively use camera traps over period 16 months. relative...
Small land mammals possess features that significantly influence the dynamics of ecosystems and participate in various levels food web. In Brazilian Atlantic Forest richness these animals is high, which makes them even more ecologically numerically relevant this environment. context, we investigated species composition small an unexplored area southern Brazil, compared with other regions order to understand how community related others. The study was located interior forest formation, at a...
Abstract The biogeographic history of a species results from responses to past and current processes, understanding those at both temporal scales is essential. We explored phylogeographic genetic variation structure in Ctenomys flamarioni—a subterranean rodent that inhabits small region the coastal plain Brazil—and contrasted roles “present-day niche suitability” versus “historical climate stability” understand intraspecific diversity. used mitochondrial DNA sequences (concatenated Cytb...
We recorded three individuals of Abrawayaomys ruschii Cunha & Cruz, 1979 in Chapecó, Santa Catarina state, expanding the known geographic distribution species approximately 370 km west from its nearest locality. It is second record this type physiognomy, characterized by transition Seasonal Deciduous and Mixed Ombrophilous forests. Additionally, closest record, about 200 east, recently described chebezi Pardiñas, Teta D’Elía, 2009.
Coexistence between species with similar niche requirements is often facilitated by displacement of morphological, behavioral, or physiological characteristics. Experiments comparing treatments and without the presence potential competitors are ideal for testing hypotheses interspecific competition. Here, we investigate a fundamental aspect in natural history species: home range. We determined whether co-occurrence can influence range size 2 subterranean rodent species, Ctenomys flamarioni...
Abstract Endemic, small range species are susceptible to environmental changes and landscape modification. Understanding genetic diversity distributional patterns is important for implementation of effective conservation measures. In this context, was evaluated update the status an endemic tuco-tuco, Ctenomys ibicuiensis. Phylogeographic population analyses mitochondrial DNA microsatellite loci were carried out using 46 individuals sampled across species’ distribution. ibicuiensis presented...
Its wide karyotypic variation characterizes the genus Ctenomys, and in Brazil, is distributed country's southern, Midwest, northern regions. Recently, populations of Ctenomys have been found Midwest with two new lineages named C. sp. "xingu" "central."
Abstract Camera traps became the main observational method of a myriad species over large areas. Data sets from camera can be used to describe patterns and monitor occupancy, abundance, richness wildlife, essential information for conservation in times rapid climate land‐cover changes. Habitat loss poaching are responsible historical population losses mammals Atlantic Forest biodiversity hotspot, especially medium large‐sized species. Here we present data set trap surveys native (>1 kg)...