Carlos Eduardo Costa-Campos

This study describes the diet and trophic ecology of anurans from the Amazonian savanna in Amapá (Brazil). A total of 17 anuran species were collected (three bufonids, eight hylids, five leptodactylids, and one phyllomedusid), and their stomach contents revealed 17 prey items. Coleoptera, Hemiptera, and Acari had high indices of relative importance...

Schrankiana are gastrointestinal parasites of anurans, distributed throughout Central and South America. Schrankiana formosula and Schrankiana inconspicata are some of the most commonly reported species parasitising anurans from Brazil, and the morphological differences between them are unclear. In the present study, we redescribed S. formosula bas...

Osteocephalus cabrerai is an arboreal anuran widely distributed in South America. However, there are no parasitological studies conducted on the species, resulting in a parasite fauna completely unknown. Thus, this study aims to characterize the parasitic community structure of O. cabrerai in the municipality of Pedra Branca do Amapari, Amapá state...

In this study we describe the diet of the leptodactylid Leptodactylus mystaceus during the rainy season from an open area in the Cancão Natural Municipal Park, municipality of Serra do Navio, a lowland area of the Guiana Shield. Frogs were captured by hand monthly from February to July 2019. We examined 40 individuals of L. mystaceus, that were mea...

Knowledge on the ecology of many Amazonian anuran species is still incipient, especially when it comes to resource partitioning. Here, we studied dietary variation of four Pristimantis species (P. chiastonotus, P. crepitaculus, P. gutturalis and P. zeuctotylus) from Eastern Brazilian Amazonia during the rainy and dry seasons. From 226 stomach cont...

Ophiotaenia is the most diverse genus among proteocephalids, composed of species commonly found parasitizing snakes worldwide. However, the diversity of Ophiotaenia in the Neotropical region is still underestimated. This study describes Ophiotaenia karipuna n. sp. found parasitizing Erythrolamprus miliaris in the State of Amapá, Brazil. Additionall...

Differentiation in resource use by sympatric species reduces competition and allows coexistence. Constraints imposed both by evolutionary history and current ecological interactions strongly influence the coexistence of distinct anuran species. In this context, we analyzed the dietary habits of two sympatric frogs in a Batesian mimicry system, Amee...

Diet is one of the most important dimensions of the trophic niche, contributing to understanding intra-and interspecific interactions in food webs. Amazophrynella teko was described in 2018, and given the scarcity of information about its feeding ecology, we describe here the diet of this species in a population from eastern Amazonia based on stoma...

Nematodes of the genus Aplectana Railliet & Henry, 1916 are common parasites of the digestive tract of amphibians and reptiles in the Neotropical region. During a parasite survey on Boana boans (Linnaeus, 1758), we found specimens of nematodes with Aplectana characteristics. We observed a set of characteristics that differs the species of our study...

Aposematic coloration plays an important role for species, as it serves as a clear signal of danger to visually-oriented predators regarding the potential toxicity of individuals displaying this condition. However, considerable gaps remain on this subject, and, primarily, empirical data are lacking to support robust discussions on the topic. The ha...

The complex behaviors of lizards remain poorly documented, especially in tropical species. We compiled the behaviors of the diurnal Bridled Forest Gecko Gonatodes humeralis through 52 hours of direct field observations performed during the day. In most observations (11%), we observed G. humeralis in pairs (a male and a female). We recorded nine beh...

Este trabalho objetivou verificar a percepção de alunos de uma escola pública do município de Macapá, Amapá, sobre as malformações em sapos e sua relação com o meio ambiente. Para isso, utilizou-se como recursos didáticos para levantamento de dados dois questionários, palestra, aula prática, e o jogo lúdico para melhoria do ensino-aprendizagem dos...

Nematodes of the family Molineidae are the most frequent helminths reported infecting the digestive tract of South American amphibians. The molineid genus Kentropyxia Baker, 1982 includes only 2 nominal species of parasitic nematodes: Kentropyxia sauria Baker, 1982 and Kentropyxia hylae Feitosa et al., 2015 both from the eastern Amazon. We describe...

Cosmocercoides Wilkie, 1930 are gastrointestinal parasites commonly found in amphibians and reptiles, with 4 species reported from the Neotropical region. In the present study, a new species of Cosmocercoides , namely Cosmocercoides amapari n. sp. is described using integrated approaches such as light and scanning microscopy, and DNA sequencing of...

Supplemental material for this article can be accessed here: http://dx.doi.org/10.1080/14772000.2022.2089269.

Pristimantis gutturalis is a species of the P. conspicillatus group described from French Guiana, with distribution so far restricted to the eastern Guiana Shield. Some aspects of this species are yet understudied, including its vocal repertoire which is unknown to date. Although in its original description it was properly characterized with regard...

O presente guia de anuros foi produzido a partir de dados de pesquisas de campo realizadas no município de Serra do Navio, Amapá entre os anos de 2013 e 2022. O foco do livro está em reunir todos os registros de ocorrência de espécies de anuros dentro do território de Serra do Navio, uma importante região que compreende a porção leste do Escudo das...

Twelve species of anurans (Amazophrynella teko, Rhinella castaneotica, Hyalinobatrachium mondolfii, H. tricolor, Pristimantis gutturalis, P. inguinalis, Ranitomeya variabilis, Osteocephalus leprieurii, Scinax proboscideus, Leptodactylus petersii, Chiasmocleis hudsoni, Synapturanus mirandaribeiroi), into the seven families (Bufonidae, Centrolenidae,...

We herein present the first annotated anuran checklist for the Brazilian state of Amapá, eastern Amazonia, based on a thorough literature review. We recorded the occurrence of 111 species belonging to 13 anuran families distributed across 48 localities throughout Amapá, within two biomes. Among these species, 62.5% occur exclusively in the Tropical...

Anurans show several antipredator behaviours. Body raising is characterized by inflation of the lungs. We describe the body raising behaviour of Rhinella castaneotica during climbing behaviour from Amazonian rainforest in the state of Amapá, northern Brazil. Climbing behaviour is a common ability in dendrobatids and bufonids, but the body raising i...

In this work, we studied the diet of Pseudopaludicola boliviana from a floodplain area in southern Amapá, Brazil. A total of 141 frogs were collected by hand from March 2017 to March 2018, with 87 individuals collected during the rainy season (January-July) and 54 collected during the dry season (August-December). Of these, 86 stomachs (58 in the r...

We studied the diet and the clutch size of Rhinella castaneotica from a primary forest in northern Brazil, municipality of Serra do Navio, Amapá state. A total of 100 toads (77 males and 23 females) were collected between April 2017 and March 2018 through active searches. Thirty-four individuals (34%) had a total of 870 prey items in their stomach...

The current knowledge on the natural history are still scarce for most species of Amazonian anurans. Among these, the hylid Dendropsophus counani has incipient data on its breeding biology. Herein, we studied the breeding biology of D. counani in the breeding seasons at Cancão Municipal Natural Park, municipality of Serra do Navio, Amapá state. Mal...

The study of defensive behaviors in anurans can lead to new hypotheses for a better understanding of prey-predator interactions. Herein, based on field observations, we described for the first time defensive behaviors of Leptodactylus rhodomystax. The studied individual displayed stretching limbs posture and evidenced hidden aposematism. Hidden apo...

We report the first collected specimen of Trachycephalus hadroceps (Duellman & Hoogmoed, 1992) from Brazil. This record, from the municipality of Porto Grande in the state of Amapá, expands the geographic distribution of this species by approximately 230 km south-southeast from the nearest previously known locality at Camopi, French Guiana. We also...

Atualmente, a nomenclatura dos seres vivos é regida por códigos internacionais que são construídos de forma coletiva, envolvendo a comunidade científica. Essas construções servem para organizar a nomenclatura do passado e estabilizar os nomes das espécies, sendo cada código é independente e autônomo. O uso adequado, o conhecimento e a consulta aos...

Rhabdias Stiles and Hassal, 1905 comprises approximately 90 species of parasitic lung nematodes of amphibians and reptiles that have a wide distribution, with 21 species occurring in the Neotropics. In the present study, we describe Rhabdias waiapi n. sp. found parasitizing the lungs of the anuran species Pristimantis chiastonotus from the Amazon B...

In anurans, the different types of anti-predator behaviour have been documented in isolation, but some species have shown synergistic strategies in different situations. The display of these types of behaviour may be related to the types of predators in the habitat, which boost defensive responses in their prey. However, most reports are mostly opp...

We report the first records of Scinax ruberoculatus Ferrão, Fraga, Moravec, Kaefer & Lima, 2018 in the state of Amapá, Brazil. We provide an updated distribution map of this species, comment on its occurrence in French Guiana and Suriname, and provide morphometric and bioacoustic data for a population from the municipality of Porto Grande, Amapá, i...

A predation event on Chatogekko amazonicus (Sphaerodactylidae) by the wolf-spider Lycosa sp. (Lycosidae) was observed in an Amazon forest, in north Brazil.

Based on field surveys undertaken in two conservation areas, we report new distribution data of Hyalinobatrachium taylori (Goin, 1968) and H. tricolor Castroviejo-Fisher, Vilà, Ayarzagüena, Blanc & Ernst, 2011 from the state of Amapá, northern Brazil. We provide acoustic data from these new populations. These are the first records of H. taylori and...

Available literature records on the diet of D. dendrophis indicate that this species is a dietary specialist, preying on terrestrial and arboreal anurans, as is another species of the genus (D. atlantica). The occurrence of U. superciliosus in the diet of D. dendrophis is therefore somewhat unexpected and makes the species appear less of a speciali...

The distribution of the reptile species in the eastern Amazon region is still poorly known. Here we give a list of reptile species from the Cancão Municipal Natural Park, municipality of Serra do Navio, state of Amapá, Brazil. We recorded through active search a total of 57 species, including two turtles, one crocodilian, 30 lizards, and 24 snakes....

Lithodytes lineatus (Schneider, 1799) is a medium-sized frog distributed throughout South America and found in Brazil in the Amazonia and Cerrado domains. Here we document two new records of the species in forested areas in the state of Amapá, Northern Brazil, and provide an updated distribution map for it. The record of L. lineatus in the state of...

During recent field expeditions to an Amazonian region in eastern Guiana Shield (Serra do Navio, state of Amapá, northern Brazil), we collected and recorded calls of a species of Adelophryne, a diminutive leaf-litter-dwelling, direct- developing frog genus. After a careful integrative taxonomic evaluation using morphological, molecular, and bioacou...

50% majority-rule consensus tree of Bayesian inference file in nexus format

16S matrix in nexus format used to reconstruct the phylogenetic hypothesis

Frogs use vocalizations for intra and interspecific communication, and despite this is a spread feature, many species have their acoustic repertoire poorly known. In such context, we studied the defensive vocalization (distress calls) of two Amazonian species belonging to the Boana albopunctatus group at a reproductive assemblage pool in the Parque...

Glass frogs (Centrolenidae) are widely distributed in the Neotropics. This study presents novel data on two centrolenid species of the genus Hyalinobatrachium Ruiz-Carranza & Lynch, 1991 collected during herpetofaunal surveys carried out in Brazilian Amazonia of the state of Amapá. Here we report the first record of Hyalinobatrachium cappellei (van...

Many aspects of the Amazonian amphibian fauna are yet under-studied. This is the case of the Amapá treefrog, Boana dentei, which was described in the 1960s based on a single female specimen from Serra do Navio, a Brazilian region of lowland Amazonian forests in the easternmost portion of the Guiana Shield. The species has been reported only a few t...

Closely related species are often similar in morphological and ecological characters, which may lead them to compete when occurring in sympatry. In this sense, we analyzed trophic niche overlap among three Leptodactylus species, Leptodactylus macrosternum, L. fuscus and L. aff. podicipinus, in a floodplain environment from a Protected area in the B...

In this study, the composition of the diet and the feeding activity of Electrophorus varii were evaluated. The influence of ontogeny and seasonality in these feeding parameters was also examined. Fish were collected in the Curiaú River Basin, Amazon, Brazil, from March 2005 to February 2006, during the rainy (January–June) and dry (July–December) s...

The genus Amazophrynella Fouquet, Recoder, Teixeira, Cassimiro, Amaro, Camacho, Damasceno, Carnaval, Moritz, and Rodrigues, is represented by 12 nominal species and distributed in the Amazon region of Brazil, Bolivia, Colombia, Ecuador, Guyana, French Guiana, Peru, and Venezuela (Frost 2020). In the last eight years, ten species from this genus hav...

Sphaenorhynchus carneus is a small hylid distributed throughout the upper Amazon Basin. We carried out the fieldwork between June 2015 and May 2016, in a floodplain area in district of Ariri, municipality of Macapá, state of Amapá, Brazil. We conducted visual encounter and acoustic surveys during the day and night in five linear transects. We colle...

Specimens of the glassfrog Cochranella resplendens (Lynch & Duellman, 1973) are known from 13 localities from Colombia, Ecuador, and Peru. Herein, we report the first Brazilian record, which extends the known distribution of the species 2,129 km to the east of the nearest record in Santa Rosa de Sucumbíos Río Rumiyacu, Valle del Guamués, Putumayo,...

The genus Dendropsophus Fitzinger contains 108 recognized species (Frost 2020) distributed in nine species groups according to Faivovich et al. (2005). However, recent phylogenetic analysis recognized the presence of nonmonophyletic groups (e.g., Wiens et al. 2010; Fouquet et al. 2011; Motta et al. 2012; Jansen et al. 2019) suggesting that the rela...

The Crimson Topaz, Topaza pella, is the least known of the two hummingbird species of this exclusively Amazonian trochilid genus, that also includes T. pyra. Most available information on T. pella nests, young and reproductive behavior is based on anecdotal observations from Guyana in the 1930s and 1950s. Here, we provide new data on nest descripti...

Polyphenism has been well documented in anurans as an anti-predator mechanism. Herein, we report two cases of this defensive behaviour in Boana dentei and Scinax ruber in Amapá State, eastern Amazon, Brazil. Both species changed colour when exposed to different microhabitats. Our field observations suggest that this phenomenon is important for anur...