Luis Felipe Toledo

Luis Felipe Toledo
University of Campinas | UNICAMP · Departamento de Biologia Animal

PhD

About

349
Publications
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Introduction
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Publications

Publications (349)
Article
Full-text available
Habitat fragmentation and infectious diseases threaten wildlife globally, but the interactions of these threats are poorly understood. For instance, while habitat fragmentation can impact genetic diversity at neutral loci, the impacts on disease-relevant loci are less well-studied. We examined the effects of habitat fragmentation in Brazil’s Atlant...
Article
Animal acoustic communication can be challenging under intense noise. Amphibians that inhabit noisy environments offer a great opportunity to study potential mechanisms that maximise signal transmission. Based on the hypothesis that frogs can adjust their calls to circumvent communication problems, we tested the effect of the duration of biotic sou...
Article
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Here, we investigate the influence of scale on different drivers influencing the occurrence of the chytrid fungus, Batrachochytrium dendrobatidis (Bd), in the Atlantic Forest, Brazil. We used gridded values of proxies of the abiotic, biotic and anthropogenic components of landscapes where Bd infects amphibians. Building upon disease prevalence data...
Article
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Anurans commonly use sound signals as the main form of communication. This system is diverse in both structure and social functions, and can be used from mate recognition until evaluation of conspecifics. Consequently, when in noisy environments, the main constraint is to correctly identify acoustic signals. Thus, this study aims to evaluate the in...
Article
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Anuran larvae in aquatic environments are important prey items for several vertebrate and invertebrate species. Besides avoiding predation, there are some strategies that may reduce the physical damage in those tadpoles that survive the predation attempt. For example, the injured tadpole tail can regrow after a predator bite, but few studies have e...
Article
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Non-native species are a major problem affecting numerous biomes around the globe. Information on their population genetics is crucial for understanding their invasion history and dynamics. We evaluated the population structure of the non-native American bullfrog, Aquarana catesbeiana, in Brazil on the basis of 324 samples collected from feral and...
Article
Amphibians breeding in aquatic environments may encounter a myriad of threats during their life cycle. One species known to prey on native amphibians in aquatic habitats is the invasive North American bullfrog Lithobates catesbeianus, which, besides being a voracious predator and competitor, often acts as a pathogen carrier and disease superspreade...
Preprint
Infectious diseases of wildlife continue to pose a threat to biodiversity worldwide, yet pathogens are far from monolithic in virulence. Within the same pathogen species, virulence can vary considerably depending on strain or lineage, in turn eliciting variable host responses. One pathogen that has caused extensive biodiversity loss is the amphibia...
Article
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In recent decades, the development of new sampling techniques has allowed us to more easily collect novel samples that enrich our knowledge of the specimens we study. In this sense, audiovisual samples, especially acoustic signal recordings, have become an essential part of herpetological research. The correct storage of these specimens is key to s...
Article
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The genus Brachycephalus is a fascinating group of miniaturized anurans from the Brazilian Atlantic Forest, comprising the conspicuous, brightly colored pumpkin-toadlets and the cryptic flea-toads. Pumpkin-toadlets are known to contain tetrodotoxins and therefore, their bright colors may perform an aposematic function. Previous studies based on a l...
Article
Anuran communication involves different channels of signal transmission, including acoustic, chemical, seismic, tactile, and visual stimuli. If emitted in combination, the components of the different channels form the multimodal communication, which can be important to reinforce, complement , or transfer fundamental information. This is especially...
Article
Anurans that breed in rivers and cascade streams need to deal with the influence of the low-frequency water flow noise that could interfere with their acoustic communication. To overcome that, some species display visual signals or emit high-pitched calls. However, there is a constraint related to body size [snout-vent length (SVL)] that limits the...
Article
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Mycoviruses may influence the pathogenicity of disease-causing fungi. Although mycoviruses have been found in some chytrid fungi, limited testing has not detected them in Batrachochytrium dendrobatidis (Bd), the cause of the devastating amphibian disease, chytridiomycosis. Here we conducted a survey for mycovirus presence in 38 Bd isolates from Aus...
Article
World population growth demands an accelerated increase in food production especially that of animal origin. One of the main global challenges is to couple such a production with environmental health. The production of aquatic animals, i.e., aquaculture, tends to be less harmful to the environment due to the reduction of crop yield requirements and...
Article
Anthropogenic forces are increasing climate anomalies and disease pressure in tropical forests. Terrestrial-breeding amphibians, a diverse group of highly endemic tropical frogs, have been experiencing cryptic population declines and extinctions, most of which have been retrospectively linked to climate anomalies and the fungal pathogen Batrachochy...
Article
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Illegal wildlife trade is historical and has not been contained. With the popularization of the internet and social media globally, we hypothesized that illegal trade would be facilitated and predict that trade will increase. To test the hypothesis, we surveyed amphibian illegal trade on Facebook groups in the last 5 y between 2015 and 2020 in Braz...
Article
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In an elevational gradient, the mountain top generally presents a reduced species diversity. However, it is there where we often find microendemic and quite often still undescribed species. That European Journal of Taxonomy 764: 119-151 (2021) 120 prediction is very common in underexplored Neotropical mountains, like those of the Caparaó National P...
Article
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Body deformities are often linked to environmental disturbances when the proportion of affected individuals exceeds 10% of the population. Thus, amphibians can help improving both ecosystems and human welfare. We studied a potential cause of deformities in an introduced population of toads on a Brazilian island where the prevalence exceeds 50%. We...
Article
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Amphibian reproductive modes (RMs) have been extensively described and applied to amphibian biology studies. However, due to new behavioural observations and past system inconsistencies we found it necessary to review the current classification and redefine the sets of characters which define amphibian RMs. We suggest the use of 11 characters that...
Article
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Niche conservatism explains biological invasions worldwide. However, a plethora of ecological processes may lead invasive species to occupy environments that are different from those found within native ranges. Here, we assess the potential invadable areas of the world’s most pervasive invasive amphibians: the cane toad, Rhinella marina + R. horrib...
Article
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We mapped the distribution of two defensive behaviors (balling and head hiding) of Neotropical snakes to evaluate its distribution in distinct phylogenetic groups. Balling behavior was observed in 58 out of the 167 examined species across seven families. Head hiding was observed in a total of 100 species across nine families. From the high prevalen...
Article
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The host-associated microbiome plays a significant role in health. However, the roles of factors such as host genetics and microbial interactions in determining microbiome diversity remain unclear. We examined these factors using amplicon-based sequencing of 175 Thoropa taophora frog skin swabs collected from a naturally fragmented landscape in sou...
Article
Chytridiomycosis, an emergent infectious disease caused by the fungus Batrachochytrium dendrobatidis (Bd), is considered one of the drivers of the current amphibian biodiversity loss. To inform endangered species conservation efforts, it is essential to improve our knowledge about the abiotic and biotic factors that influence Bd infection dynamics...
Article
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The family Hylodidae is composed of 46 species distributed in three genera: Crossodactylus (13 species), Hylodes (26 species), and Megaelosia (seven species). Although the monophyly of the Hylodidae is supported by previous molecular phylogenetic inferences, the monophyly of Megaelosia and/or Hylodes has been questioned. Crossodactylus and Hylodes...
Article
Complex interactions among hosts, pathogens, and the environment affect the vulnerability of amphibians to the emergence of infectious diseases such as chytridiomycosis, caused by Batrachochytrium dendrobatidis (Bd). Boana curupi is a forest-dwelling amphibian endemic to the southern Atlantic Forest of South America, a severely fragmented region. H...
Article
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The following list includes all recognized species of amphibians, known by vouchers or published information to occur within the political borders of Brazil (as of April 2021). Supra-generic taxonomy follows Frost (2021), as do most generic and species names. Other taxonomic decisions and species exclusions are explained below. All inclusions relat...
Article
Environmental variation along elevational gradients shapes conditions for pathogen development, which influences disease outcomes. Chytridiomycosis is a non-vectored disease caused by the aquatic fungus Batrachochytrium dendrobatidis (Bd) and is responsible for massive declines of amphibian populations all over the world. Several biotic and abiotic...
Article
Spectral properties of animal acoustic signals may help individuals to assess the characteristics of rivals and to adjust their competitive strategies in territorial disputes. Thus, we hypothesized that the distribution of energy across frequency bands in anuran calls determines behavioral responses in male-male competition. Using playback experime...
Article
en The chytrid fungus (Bd) is one of the main causes of recent amphibian population declines and extinctions. However, one possible disease transmission pathway remained unexplored: the insect‐borne transport between hosts. We found Bd DNA on specialized blood‐sucking midges, which could indicate the transport of alive zoospores between amphibian h...
Article
The global amphibian extinction crisis has challenged scientists around the globe for decades. Robust long-term time-series data to detect such population declines are key to understanding how species respond to climatic variations. Thus, we assessed the species' richness and abundance of an anuran assemblage in the Atlantic Forest in Brazil, where...
Article
Amphibian skin bacteria may confer protection against the fungus Batrachochytrium dendrobatidis (Bd), but responses of skin bacteria to different Bd lineages are poorly understood. The global panzootic lineage (Bd-GPL) has caused amphibian declines and extinctions globally. However, other lineages are enzootic (Bd-Asia-2/Brazil). Increased contact...
Article
Latitudinal gradients are linked to the dynamics of infectious diseases. Both prevalence and infection intensity of the amphibian-killing fungus, Batrachochytrium dendrobatidis (Bd), vary with latitude. Here, we tested whether abiotic and biotic factors are associated with Bd infection prevalence and intensity along a large latitudinal gradient acr...
Chapter
Anthropogenic introduction of non-native species has occurred since the first European colonization of South America in the 1500s, with the Atlantic Forest being the most heavily affected biome in the continent. Biological invasions, together with other anthropogenic pressures occurring over the subsequent 500 years, led to many biological changes...
Preprint
Habitat fragmentation and infectious disease threaten amphibians globally, but little is known about how these two threats interact. In this study, we examined the effects of Brazilian Atlantic Forest habitat fragmentation on frog genetic diversity at an immune locus known to affect disease susceptibility in amphibians, the MHC IIB locus. We used a...
Article
Full-text available
In Brazil’s Atlantic Forest (AF) biodiversity conservation is of key importance since the fungal pathogen Batrachochytrium dendrobatidis (Bd) has led to the rapid loss of amphibian populations here and worldwide. The impact of Bd on amphibians is determined by the host's immune system, of which the skin microbiome is a critical component. The richn...
Article
Amphibians have been facing a pandemic caused by the deadly fungus Batrachochytrium dendrobatidis ( Bd ). Although studies have elucidated cutaneous and homeostatic disturbances, it is still unknown if the hepatic function can be affected or if hepatic effects differ among host species. Thus, we evaluated the effects of an experimental Bd infection...
Article
Infection by the chytrid fungus Batrachochytrium dendrobatidis ( Bd ) is a major threat to amphibians and has caused catastrophic global declines of amphibian populations. Some studies have detected a seasonal pattern of infection associated with the local climate, and although most of them have focused on investigating the seasonality of Bd in rel...
Preprint
Full-text available
International socioeconomic relationships form the background that underlies the history of invasive species. Species with economic value, such as the North American bullfrog (Lithobates catesbeianus), are more likely to become internationally distributed and to be subsequently introduced to non-native areas and, consequently, become more difficult...
Article
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The genus of Neotropical frogs Pithecopus includes 11 species occurring east of the Andes from southern Venezuela to northern Argentina. Recent genetic approaches pointed out an unusual genetic diversity among populations from localities in northeastern Brazil recognized as P. nordestinus. In fact, one of these studies confirmed the hypothesis that...
Article
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Anthropogenic climate warming affects many biological systems, ranging in scale from microbiomes to biomes. In many animals, warming-related fitness depression appears more closely linked to changes in ecological community interactions than to direct thermal stress. This biotic community framework is commonly applied to warming studies at the scale...
Article
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In recent years, the taxonomic knowledge of Pseudopaludicola has increased and it is currently possible to elucidate aspects of the species within this genus such as their geographic distributions. Here we accessed new data on geographic distribution of P. boliviana and three long-legged species of the P. saltica group (P. saltica, P. murundu, and...
Article
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There are currently seven species of small frogs (up to 30 mm in snout-vent length) in the genus Paratelmatobius Lutz Carvalho 1958 (Frost, 2020). They are all endemic to mountain ranges in the Atlantic Forest, occurring in the Serra do Mar and Serra da Mantiqueira, southeastern Brazil (Santos et al. 2019). Most congeneric species are considered ra...
Article
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Pithecopus rusticus is an endemic amphibian restricted to the type locality, in southern Brazil, and possibly endangered to extinction, due to habitat degradation. However, an additional threat to amphibians is the chytrid fungus, which has been associated with amphibian population declines and extinctions. Hence, we tested the hypothesis that Batr...
Article
Population declines are noticeable when adults disappear locally or massive die-offs are reported. However, populations can slowly decline if recruitment is unsuccessful. We aimed to determine the recruitment rates and the biotic factors involved in the metamorphosing success of a threatened species, Melanophryniscus montevidensis. Using in situ en...
Article
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The Atlantic Forest (AF) is one of the biodiversity hotspots of the world, and the most fragmented biome of Brazil. This biome includes different phytophysiognomies, as riparian, slope, cloudy forests, and grasslands. Such complexity, allied to huge latitudinal and high elevational range, provides diverse habitats and conditions for amphibian speci...
Chapter
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Fernando de Noronha (FN) is an oceanic archipelago in the northeast coast of Brazil, approximately 360 km away from the continent. It is composed of 21 islands and the biggest (also named Fernando de Noronha) has 16.4 km² and is inhabited since the 17th century. The archipelago is an important breeding site for several marine birds, including regio...
Article
The advertisement call contains important spectral and temporal information for species-specific recognition and is generally related to sexual attraction. On the other hand, the territorial call is emitted to defend a specific territory from conspecifics or heterospecifics. Therefore, we hypothesised that the territorial call of sympatric and clos...
Article
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The Neotropical frog genus Pseudopaludicola includes 25 species distributed throughout South America. Herein we review the taxonomic status of P. parnaiba relative to P. canga and the specific identity of the population treated in previous studies as Pseudopaludicola sp. 3 from Barreirinhas in the Brazilian state of Maranhão. The lack of differenti...
Article
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Deforestation can compromise ecological processes and biotic interactions, including the host-parasite relationship. While some parasites infect only one host, others require multiple hosts to complete their complex life cycles. In this context, different parasites may have different demands and traits and may have specific responses to habitat deg...
Article
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Animals that present migration restrictions are especially interesting to study isolation effects in the context of island biogeography theory. Among these effects, behavioral traits are one of the least studied subjects. The treefrog Boana albomarginata presents gigantism in some Atlantic islands and, therefore, examining its advertisement calls m...
Article
American Bullfrogs (Lithobates catesbeianus) are considered important reservoirs and vectors of the fungus Batrachochytrium dendrobatidis (Bd), which can cause the disease chytridiomycosis in many amphibian species. In this study, we assessed the potential of bullfrog farms as centers for Bd dispersion. Specifically, we compared the incidence of Bd...
Article
Full-text available
American Bullfrogs (Lithobates catesbeianus) are considered important reservoirs and vectors of the fungus Batrachochytrium dendrobatidis (Bd), which can cause the disease chytridiomycosis in many amphibian species. In this study, we assessed the potential of bullfrog farms as centers for Bd dispersion. Specifically, we compared the incidence of Bd...
Article
Full-text available
Anuran calling activity is linked to adequate environmental conditions, especially relative humidity, temperature , and rainfall. Consequently, the breeding season is frequently concomitant to the rainy season for most anuran species. This applies in particular to species that reproduce in temporary water bodies, such as our focal species Leptodact...
Article
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Ecologists studying emerging wildlife diseases need to confront the realism of imperfect pathogen detection across heterogeneous habitats to aid in conservation decisions. For example, spatial risk assessments of amphibian disease caused by Batrachochytrium dendrobatidis (Bd) has largely ignored imperfect pathogen detection across sampling sites. B...
Article
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Lambert et al . question our retrospective and holistic epidemiological assessment of the role of chytridiomycosis in amphibian declines. Their alternative assessment is narrow and provides an incomplete evaluation of evidence. Adopting this approach limits understanding of infectious disease impacts and hampers conservation efforts. We reaffirm th...
Article
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Abstract Allometric constraint is a product of natural selection and physical laws, particularly with respect to body size and traits constrained by properties thereof, such as metabolism, longevity, and vocal frequency. Allometric relationships are often conserved across lineages, indicating that physical constraints dictate scaling patterns in de...