A5008306693- Amphibian and Reptile Biology
- Species Distribution and Climate Change
- Animal and Plant Science Education
- Plant and animal studies
- Animal Behavior and Reproduction
- Wildlife Ecology and Conservation
- Turtle Biology and Conservation
- Fish biology, ecology, and behavior
- Insect and Arachnid Ecology and Behavior
- Bat Biology and Ecology Studies
- Wildlife-Road Interactions and Conservation
- Insect and Pesticide Research
- Scarabaeidae Beetle Taxonomy and Biogeography
- Ecology and Vegetation Dynamics Studies
- Genetic diversity and population structure
- Mosquito-borne diseases and control
- Environmental Toxicology and Ecotoxicology
- Environmental and Biological Research in Conflict Zones
- Dermatological diseases and infestations
- Animal Vocal Communication and Behavior
- Lepidoptera: Biology and Taxonomy
- Pharmaceutical and Antibiotic Environmental Impacts
- Invertebrate Taxonomy and Ecology
- Genomics and Phylogenetic Studies
- Study of Mite Species
Universidad de la República de Uruguay
2014-2024
Universidad La República
2007-2024
Instituto de Ecologia y Sistemática
2016
Instituto de Ecología
2016
Pontifícia Universidade Católica do Rio Grande do Sul
2004-2010
Universidad Católica del Uruguay
2008
Faculdade de Tecnologia e Ciências
2004-2008
Anthropogenic trade and development have broken down dispersal barriers, facilitating the spread of diseases that threaten Earth's biodiversity. We present a global, quantitative assessment amphibian chytridiomycosis panzootic, one most impactful examples disease spread, demonstrate its role in decline at least 501 species over past half-century, including 90 presumed extinctions. The effects been greatest large-bodied, range-restricted anurans wet climates Americas Australia. Declines...
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...
Lizards of the Liolaemus wiegmannii group comprise 11 species that are widely distributed east Andes, occurring in Argentina, Uruguay, and Brazil. Here we analyzed a population genus Liolaemus, found Pampa region on isolated sand dunes along Tacuarembó River. We conducted biometric, meristic, genetic comparisons between this other populations L. weigmannii from Argentina complex. Our morphological analyses showed represents to new belonging group. To date, its known distribution is extremely...
We used species distribution modeling to investigate the potential effects of climate change on 24 Neotropical anurans genus Melanophryniscus. These toads are small, have limited mobility, and a high percentage endangered or present restricted geographical distributions. looked at changes in size suitable climatic regions numbers known occurrence sites within limits all species. MaxEnt algorithm project current future areas (a consensus IPCC scenarios A2a B2a for 2020 2080) each 40% may lose...
The diet of Leptodactylus ocellatus (L., 1758) was studied in specimens collected at Maldonado Department (Uruguay), where monthly surveys were made between August 1998 and March 2000. A total 143 frogs collected, measured, sexed, dissected, to assess stomach contents. anurans grouped into three age classes four categories (considering sex capture date). trophic amplitude for each class sex-season category quantified using Shannon-Weaver Index, the niche overlap ages by Pianka Index....
Intrapopulation variation includes age and sexual variation, but also individual niche specialization. Individual specialization has important effects on dynamics at population or community levels. Environmental intraspecific interactions are factors that can promote enhance this kind of variation. Despite its relevance, knowledge about in amphibians is still scarce, especially species from temperate regions. In study we analyzed the intrapopulational trophic Hypsiboas pulchellus a southern...
Temporal and spatial changes in the diet of Hyla pulchella (Anura, Hylidae) southern Uruguay.In this article we report a population hylid frog from southeastern Uruguay.We collected specimens ponds, where identified microenvironments defined by invertebrate assemblage, during one year divided into two seasons (warm cold).We taxonomically determined 10365 invertebrates belonging to 21 categories digestive tracts frogs.We estimated diversity alimentary preference according seasons.We expected...
A new bufonid toad is described. The species belongs to the genus Melanophryniscus, and may be largest in this genus. Its size external features (pale green dorsal surface) resemble those of Melanophryniscus cambaraensis macrogranulosus, from which it differs by absence frontal swelling. At present, endemic southern border Brazilian Southern Plateau, central Rio Grande do Sul state.
series appeared in 1968.SHIS number 1 was a list of herpetological publications arising from within or through the Smithsonian Institution and its collections entity, United States National Museum (USNM).The latter exists now as little more than an occasional title for registration activities Natural History.No. prepared printed by J. A. Peters, then
Potential effects of climate change on the distribution an endangered species:Melanophryniscus montevidensis (Anura: Bufonidae).Species distributions are linked with climate.Among predicted by Intergovernmental Panel Climate Change changes in precipitation patterns and increases mean temperatures-factors potentially having a major impact threatened, rare, endemic species.Using models to forecast possible different species under climatechange scenarios, we can identify probable impacts build...
Individual identification is useful for answering a variety of biological questions about animal life histories. Most the techniques used to mark amphibians are invasive and can cause negative effects, compromising individual survivorship biasing studies. Photo-identification consists in specimens based on photographic records unique color-design patterns. This technique has been with success several amphibian species. Melanophryniscus montevidensis an endangered anuran species inhabiting...
Abstract The uneven spatial distribution of biodiversity is a defining feature nature. In fact, the implementation conservation actions both locally and globally has progressively been guided by identification ‘hotspots’ (areas with exceptional biodiversity). However, different regions world differ drastically in availability fine-scale data on diversity species, thus limiting potential to assess their local environmental priorities. Within South America—a megadiverse continent—Uruguay...
The bufonid toad Chaunus achavali, a recently described species known only from Uruguay, is recorded for Brazil. This morphologically similar to C. ictericus and arenarum, several individuals were labeled in Brazilian scientific collections under these taxa. A lectotype of arenarum designated. Additional field notes on achavali key the identification marinus group are presented.
We studied the diet of Elachistocleis bicolor captured in pine, eucalypt, and unmodified environments Uruguay. Comparisons between seasons (active, inactive) among three (pine, unmodified), were made using rarefaction analyses, importance indices, non-parametric tests. has a specialized composed mainly Pheidole Solenopsis ants termites. The E. includes high number prey per individual, suggesting active search as foraging strategy. consumption myrmicine (i.e., Solenopsis) represents source...
Physalaemus henselii (Peters, 1872) is a little known leiuperid frog that has not been studied since the 1960’s. Herein, we redescribe its advertisement call, and assess female sexual cycle reproductive period on basis of macroscopic analysis ovaries field observations. The Ovarian Size Factor (OSF) was calculated. study made in Departamento de Rivera, northern Uruguay. call consists short (177 ± 21ms), multipulsed (20 3 pulses/note) notes, with note repetition rate 1.57 0.13 notes/s....