A5022524743- Plant and animal studies
- Animal Behavior and Reproduction
- Amphibian and Reptile Biology
- Insect and Arachnid Ecology and Behavior
- Animal and Plant Science Education
- Aquatic Invertebrate Ecology and Behavior
- Species Distribution and Climate Change
- Literacy and Educational Practices
- Fish Ecology and Management Studies
- Bat Biology and Ecology Studies
- Genetic diversity and population structure
- Calpain Protease Function and Regulation
- Lepidoptera: Biology and Taxonomy
- RNA regulation and disease
- Animal Genetics and Reproduction
- Neurobiology and Insect Physiology Research
- Venomous Animal Envenomation and Studies
- Genomics and Phylogenetic Studies
- Subterranean biodiversity and taxonomy
- E-Learning and Knowledge Management
- Protist diversity and phylogeny
- Retinal Development and Disorders
- Insect Utilization and Effects
- Morphological variations and asymmetry
- Writing and Handwriting Education
Consejo Nacional de Investigaciones Científicas y Técnicas
2013-2024
National University of Misiones
2021-2023
Instituto de Biología Subtropical
2021-2023
Bernardino Rivadavia Natural Sciences Museum
2020
Fundación Ciencias Exactas y Naturales
2013-2018
University of Buenos Aires
2013-2018
True toads of the genus Rhinella are among most common and diverse group Neotropical anurans. These widely distributed throughout South America, inhabiting a great diversity environments ecoregions. Currently, however, is defined solely on basis molecular characters, it lacks proper diagnosis. Although some phenetic species groups have traditionally been recognized within Rhinella, monophyly them rejected in previous phylogenetic analyses, many remain unassigned to these poorly groups....
Spiny‐backed tree frogs of the genus O steocephalus are conspicuous components tropical wet forests A mazon and G uiana S hield. Here, we revise phylogenetic relationships its sister group T epuihyla , using up to 6134 bp DNA sequences nine mitochondrial one nuclear gene for 338 specimens from eight countries 218 localities, representing 89% 28 currently recognized nominal species. Our analyses reveal (i) paraphyly with respect (ii) placement ‘ H yla’ warreni as (iii) non‐monophyly several...
Stenostygnus martensi spec. nov. and huberi are described from montane localities of the States Mérida Lara in Venezuela, diagnosis previously monotypic genus Simon, 1879, is emended. The presence these two new species as local endemics Andean Venezuela represents a huge range extension for Stenostygnus, also ecologically different known Amazon Basin. This could indicate rich uncharted diversity stenostygnines regions, particularly north South America.
The Rhinella granulosa group consists of 13 species toads distributed throughout open areas South America and Panama. In this paper we perform a phylogenetic analysis considering all but one the group, employing five nuclear four mitochondrial genes, for up to 7910 bp per specimen. Separate analyses under direct optimization (DO) sequences recovered R. as monophyletic revealed topological incongruence that can be explained mainly by multiple events hybridization introgression, both nuclear....
Courtship songs have undergone a spectacular diversification in the Drosophila buzzatii cluster. Accordingly, it has been suggested that sexual selection played significant role promoting rapid diversification, reproductive isolation and speciation. However, there is no direct evidence (i.e., song playback experiments with wingless males) supporting this tenet. Moreover, several studies showed courtship genus not always used female mate choice decisions, nor plays same when taken into...
Photoreceptor oil droplets (ODs) are spherical organelles placed most commonly within the inner segment of cone photoreceptors. Comprising neutral lipids, ODs can be either non-pigmented or pigmented and have been considered optically functional in various studies. Among living amphibians, were only reported to occur frogs toads (Anura), while they absent salamanders caecilians. Nonetheless, limited understanding their taxonomic distribution anurans impedes a comprehensive assessment...
Abstract Sperm competition ( SC ) is a major component of sexual selection that enhances intra‐ and intersexual conflicts may trigger rapid adaptive evolution characters. The actual role on evolution, however, poorly understood. Besides, the relative contribution distinctive features mating system to among species variation in strength remains unclear. Here, we assessed factors account for it closely related Drosophila buzzatii koepferae . Our analyses reveal higher incidence multiple...
Abstract Closely related species often differ in the signals involved sexual communication and mate recognition. Determining factors influencing signal quality (i.e. signal's content conspicuousness) provides an important insight into potential pathways by which these interspecific differences evolve. Host specificity could bias direction of evolution recognition system, favouring sensory channels that work best different host conditions. In this study, we focus on cactophilic sibling...
A wide spectrum of song complexity has been documented in a broad range animal taxa. However, the underlying processes shaping acoustic differences are still poorly understood. Empirical and theoretical studies suggest that different parameters may be subject to tempos modes evolution, resulting complex combination stabilizing directional selection change among populations through time. Nonetheless, contribution genetic drift divergence is largely unexplored. In this study, we used QST–FST...
There is a great amount of ecological information for terrestrial arthropods in several types habitats, but few studies have focused on populations living tidal freshwater wetlands. During two-year field survey, we studied the temporal dynamics harvestman Discocyrtus prospicuus inhabiting wetland exposed to predictable tides and unpredictable floods. We also explored effects temperature, precipitation, tide level population reproductive phenology. Our findings are markedly different from...
The evolution of reproductive strategies depends on the relative balance between current benefits and future costs. Geographic variation in demographic ecological factors has potential to affect by altering this optimal cost-benefit balance. Here, we studied a population harvestmen Discocyrtus prospicuus inhabiting an environment never before context: tidal freshwater wetland. We made monthly observations male-female interactions their association with egg clutches during two-year field...