Luciana Signorelli

Universidade Federal de Goiás | UFG · Departamento de Ecologia

More than half of Brazil’s Cerrado has been converted to agricultural land use, threatening its rich biodiversity that includes > 200 anuran species, most of which have aquatic larvae and are thus doubly susceptible to the environmental impacts of agriculture. Past research has largely focused on how land-use change affects adult anurans, which ign...

Extinction risk assessments are valuable conservation tools, especially for sensitive groups like amphibians, which are facing escalating threats from habitat loss and degradation. In this scenario, Brazil stands out as a pivotal player in amphibian conservation due to its exceptional amphibian diversity. Between 2010 and 2014, 973 amphibian specie...

The production and use of titanium dioxide (TiO2) nanoparticles are increasing worldwide. The release of this substance into the environment can induce toxic effects in aquatic invertebrates and vertebrates, although the exact nature of its impacts on Neotropical amphibians is still poorly understood. In this context, the present study evaluated th...

Drymarchon corais and Caiman crocodilus are reported here using different feeding behaviors for consuming poisonous toads of the genus Rhinella (Bufonidae). Drymarchon corais was observed feeding on specimens of Rhinella diptycha without avoiding contact with the parotoid macroglands, suggesting that this snake species is immune to toad toxins. Cai...

The development of new acoustic technologies has promoted remarkable advances in biodiversity monitoring. Passive acoustics is increasingly being used in ecological research to remotely assess animal communities. This recent revolution opens new questions about the precision and efficiency of these emerging methods in tracking biodiversity. However...

ContextEnvironmental filtering and limiting similarity have both been hypothesized to influence patterns of species co-occurrence, but in contrasting ways. While environmental filtering results in a greater similarity of functional traits among co-occurring species, limiting similarity predicts that only species with different functional traits can...

We present a description of the external morphology of Phyllomedusa azurea and describe the internal oral morphology of P. azurea and P. oreades from populations of the Brazilian Cerrado. We also present a comparison with the available descriptions of the external morphology of tadpoles from the P. hypochondrialis group and review the internal oral...

ContextSpecies site-occupancy patterns may be influenced by habitat variables at both local and landscape scales. Although local habitat variables influence whether the site is suitable for a given species, the broader landscape context can also influence site occupancy, particularly for species that are sensitive to land-use change. Objectives To...

Context. The Brazilian Cerrado, a global biodiversity hotspot, is being converted to agricultural production. Amphibians in particular are susceptible to agricultural practices that threaten both their wetland and upland habitats. Although local site variables are important for determining species occurrence, site occupancy is also mediated by the...

Environmental and morphological factors and social context influence the vocalizations of anuran species. Herein, we observed the acoustic behavior of Hypsiboas goianus males from Central Brazil and analyzed the following calls: advertisement, short aggressive and long aggressive. The acoustic parameters of advertisement calls were not correlated w...

Studies of the variability of signals at different levels are important to resolve issues related to the evolution of a species’ recognition system. We analysed the variation within males, among individuals, and among three breeding seasons in the advertisement calls of Scinax constrictus, a Neotropical hylid frog endemic to the Cerrado of Brazil....

Scinax pusillus is endemic to the Cerrado biome in Brazil and restricted to the state of Goiás from where the species was originally described. Herein, we report the first record of Scinax pusillus in Brazilian protected areas, update its distribution in the state of Goiás, and present the first record for the state of Mato Grosso do Sul.

The advertisement call contains spectral and temporal information, which are used by frogs in different social contexts. We analysed the variation of advertisement calls among eleven populations of Scinax squalirostris along its broad distribution area, examining geographical patterns (latitude, longitude and altitude) related to this variation. We...

Acoustic signals are the most important communication mechanism for many anuran species. However, acoustic parameters can be influenced by several factors (e.g., body size, air temperature and social context). In the present study, we investigated the influence of the air temperature, morphological characteristics and distance between calling males...

The Brazilian savanna is the second largest biome in Brazil and one of the most altered due to anthropic action. Nowadays, it is considered one of the 25 hotspots of biodiversity, whereas little information about its fauna is available in literature. This gap is even bigger when treating about amphibians and reptiles. These animals are less studied...

Aspects of natural history, such as the advertisement call, of many frog species from central Brazil are unknown. This kind of vocalization is important for specific recognition, thus studies describing these calls are needed. Herein we describe the advertisement calls of three anuran species from the Cerrado Biome: (a) Allobates goianus (Aromobati...

The Cerrado is the second largest biome in Brazil and is considered one of most important among the biodiversity hotspots. In this biome can be found about 150 anurans species, from which 30% are endemic. However, there are many Cerrado areas that have little information gathered about the anuran biodiversity. Thus, in this study we present the res...

The Cerrado is the second largest biome in Brazil and is considered one of most important among the biodiversity hotspots. In this biome can be found about 150 anurans species, from which 30% are endemic. However, there are many Cerrado areas that have little information gathered about the anuran biodiversity. Thus, in this study we present the res...

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We describe the vocal repertoire of Scinax centralis (Anura, Hylidae), examine the influence of individual characteristics on acoustic parameters, and explore the role of sound level in aggressive interactions. Observations were carried out between January 1997 and June 2001 in a rivulet at Floresta Nacional (Flona), municipality of Silvânia, state...

Temporal distribution and diversity of reproductive modes in anuran amphibians in the Emas National Park and surrounding area, state of Goiás, Brazil. The communities of anuran amphibians, especially in tropical regions, are directly influenced by environmental conditions, which play an important role in structuring and regulating communities. This...

Temporal distribution and diversity of reproductive modes in anuran amphibians in the Emas National Park and surrounding area, state of Goiás, Brazil. The communities of anuran amphibians, especially in tropical regions, are directly influenced by environmental conditions, which play an important role in structuring and regulating communities. This...

The present study reports the easternmost known record for the tropidurid lizard Stenocercussinesaccus Torres–Carvajal, 2005, at Floresta Nacional de Silvânia, state of Goiás, Brazil, in a transition areabetween cerrado sensu strictu and gallery forest