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Dive into the research topics where Thiago Maia-Carneiro is active.

Publication


Featured researches published by Thiago Maia-Carneiro.


Journal of Natural History | 2012

Ecological aspects of the pumpkin toadlet, Brachycephalus garbeanus Miranda-Ribeiro, 1920 (Anura: Neobatrachia: Brachycephalidae), in a highland forest of southeastern Brazil

Thiago Arnt Dorigo; Davor Vrcibradic; Thiago Maia-Carneiro; Marlon Almeida-Santos; Carlos Frederico Duarte Rocha

Brachycephalus garbeanus is an aposematic toadlet, endemic to the Atlantic Forest in the mountains of the state of Rio de Janeiro, southeastern Brazil. Information regarding the ecology of species in this genus is scarce, with no information on most species, including B. garbeanus. We provide ecological information about B. garbeanus, in particular regarding microhabitat use, sexual dimorphism in body size, and feeding habits. Our study was conducted in a montane area of the Parque Estadual dos Três Picos, the largest State park in Rio de Janeiro. Most of the B. garbeanus in the study area were found on the forest floor leaf litter. Females were larger on average than males. Brachycephalus garbeanus consumed a wide array of prey, comprising exclusively invertebrates and predominantly arthropods. There were seasonal differences in the diet composition, but mites and ants were important in both wet and dry seasons.


Anais Da Academia Brasileira De Ciencias | 2016

Ecology of the bromeligenous frog Phyllodytes luteolus (Anura, Hylidae) from three restinga remnants across Brazil's coast

Tatiana Motta-Tavares; Thiago Maia-Carneiro; Leonardo F. Dantas; Monique Van Sluys; F. H. Hatano; Davor Vrcibradic; Carlos Frederico Duarte Rocha

In this study, we analyzed diet, sexual dimorphism and bromeliad use in three populations of the hylid frog Phyllodytes luteolus from restinga habitats along the Brazilian coast. We found 13 arthropods categories in 161 stomachs. Ants and termites were the dominant prey items. The similar trophic niche across populations suggests this species has a conservative diet. We found sexual dimorphism regarding body size and jaw width. We recordedP. luteolus in five bromeliad species, but predominantly inAechmeablanchetiana (35.6% of individuals recorded). We recorded solitary individuals in 44% of occupied bromeliads, and never found two males sharing the same bromeliad. The data is suggestive that populations ofP. luteolus has a conservative diet independent of area, with ants and termites the being most relevant prey items. The sexual dimorphism in jaw and the solitary males may suggest that this species have territorial behavior.


Brazilian Journal of Biology | 2014

Diet and helminths of Enyalius brasiliensis (Lacertilia, Iguania, Leiosauridae) in an Atlantic Rainforest remnant in southeastern Brazil

Thiago Arnt Dorigo; Thiago Maia-Carneiro; Mauricio Almeida-Gomes; Davor Vrcibradic; M. Van Sluys; Rocha Cf

Our study aimed to add information about the diet and endoparasites of Enyalius brasiliensis from an Atlantic Rainforest remnant in the state of Rio de Janeiro, southeastern Brazil. Regarding diet, E. brasiliensis consumed arthropods, with caterpillars and beetles being the most important preys. Regarding helminth parasites, overall prevalence was low (9.5%), with 238 nematodes of the genus Physaloptera found in the stomach of one specimen and one nematode of the genus Rhabdias inside the lung of another. Our results corroborate the observations of previous studies that indicate that lizards of the genus Enyalius tend to feed mainly on relatively large-bodied arthropods and to harbour depauperate endoparasite fauna.


Journal of Natural History | 2013

The behaviour of orientation of openings of burrows by Liolaemus lutzae (Squamata: Liolaemidae): is it influenced by environmental factors?

Thiago Maia-Carneiro; Carlos Frederico Duarte Rocha

Liolaemus lutzae is a lizard species distributed along the coast of the state of Rio de Janeiro, Brazil. Individuals of this species dig burrows in the sandy substrate of restingas for shelter. We analysed whether the behaviour of L. lutzae directing the openings of their burrows was affected by environmental factors in two protected restinga areas: the Reserva Ecológica Estadual de Jacarepiá and the Parque Natural Municipal de Grumari. The openings of the burrows were located mainly close to the seashore (possibly because of less compacted substrate and/or differences in microenvironmental temperatures), and predominantly in terrains with slope. The behaviour by L. lutzae of orienting the entrance of their burrows in the descendent direction of the terrain slope may be advantageous by rendering them less vulnerable to potential threats and disturbances coming from the surface, due to being located deeper in the sand compared with burrows built on flat terrains.


Check List | 2012

Anurans from the “Restinga” of Parque Natural Municipal de Grumari, state of Rio de Janeiro, southeastern Brazil

Felipe Bottona da Silva Telles; Vanderlaine Amaral Menezes; Thiago Maia-Carneiro; Thiago Arnt Dorigo; Gisele R. Winck; Carlos Frederico Duarte Rocha

We present a list of the anuran amphibians from “restinga” of Grumari, part of the Parque Natural Municipal de Grumari (PNMG), Rio de Janeiro municipality, state of Rio de Janeiro, southeastern Brazil. This study was carried out from May 2009 to December 2010 using two active sampling methods: quadrant plots and acoustic/visual transects. We recorded 22 anuran species distributed in six families: Bufonidae (1 species), Craugastoridae (1), Hylidae (14), Leptodactylidae (3), Microhylidae (2) and Strabomantidae (1). The presence of endangered and endemic species evidence Grumari’s importance as an area for conservation of the “restinga” habitat remnants in Rio de Janeiro. Grumari is also one of the richest known areas in terms of amphibian species among the “restinga” areas studied to date in Brazil, second only to Mata de Sao Joao, Bahia.


Behavioural Processes | 2013

Seasonal variations in behaviour of thermoregulation in juveniles and adults Liolaemus lutzae (Squamata, Liolaemidae) in a remnant of Brazilian restinga.

Thiago Maia-Carneiro; Carlos Frederico Duarte Rocha

Adaptations of lizards inhabiting hot arid environments should include mechanisms of behavioural thermoregulation. In contrast, in environments with lower temperatures lizards tend to behave as thermoconformers. Herein we aim to infer thermoregulatory behaviours exhibited by Liolaemus lutzae (a lizard species endemic to restingas in the coast of the state of Rio de Janeiro, Brazil) in two different seasonal thermal environments. In the dry season, the body temperatures (Tb) of the lizards were higher than air temperature (Ta) and similar to substrate temperature (Ts), suggesting thermoconformer thermoregulatory behaviour using Ts. During the rainy season, the higher percentage of negative values of ΔTs (=Tb-Ts) and ΔTa (=Tb-Ta) and the tendency for lower Tb compared to Ts suggest a more active behavioural thermoregulation in that season. The ΔTs was higher for juveniles in the rainy season, suggesting that youngest lizards tended to thermoregulate more actively regarding to Ts than adults. L. lutzae probably survives under high Ts due to the behaviour of the individuals sheltering inside burrows or under detritus and burying themselves into the sand. This behavioural flexibility may potentially reduce variations in Tb of active lizards in changing thermal environments both during the daily cycle and between seasons.


Zoologia (Curitiba) | 2012

Feeding habits, microhabitat use, and daily activity of Cycloramphus brasiliensis (Anura: Cycloramphidae) from the Atlantic Rainforest, Brazil

Thiago Maia-Carneiro; Thiago Arnt Dorigo; Mauricio Almeida-Gomes; Monique Van Sluys; Carlos Frederico Duarte Rocha

We analyzed the feeding habits, microhabitat use, and daily activity period of the anuran species Cycloramphus brasiliensis (Steindachner, 1864), endemic to the Atlantic Rainforest biome. The only previous studies on this species focused on the systematics and new altitudinal records. This study was conducted in a large forest remnant located in the municipalities of Guapimirim and Cachoeiras de Macacu. We captured frogs through visual encounter surveys and recorded the frequency of microhabitat types used by them, and the time of capture. Diet was analyzed in terms of number, volume and frequency of occurrence of items. Individuals of C. brasiliensis occurred in association with fast-moving rocky portions of clear freshwater rivers, indicating a rheophilic habit, and were active mainly at night. Such as most anuran species, the diet of Cycloramphus brasiliensis was mainly based on arthropods, and included Blattodea, Formicidae, and Coleoptera as most important prey items.


Parasitology Research | 2018

Helminth infections in a pair of sympatric congeneric lizard species

Thiago Maia-Carneiro; Tatiana Motta-Tavares; Robson Waldemar Ávila; Carlos Frederico Duarte Rocha

We analyzed parameters of parasitism by helminths in a pair of sympatric congeneric lizard species (Tropidurus hispidus and Tropidurus semitaeniatus). Differences in their supracommunities (richness, composition, and abundance) and the influence of helminthic loads on minimum flight initiation distances and body temperatures were evaluated. We reported new findings of Piratuba digiticauda infecting T. hispidus and Oochoristica bresslaui infecting T. semitaeniatus. Parapharyngodon alvarengai was the most abundant helminth in both host species. Tropidurus hispidus individuals hosted a higher abundance and richness of helminths than T. semitaeniatus, with females of the former having larger helminthic loads than males. Dissimilarities between host species may be attributed to differences in their utilization of niche dimensions (time, food, and structural and thermal space), the occurrence of morphological differences that result in differential exposure to the sources and agents of infection, and/or differential immunological functions. Our data suggests that infection by P. alvarengai led to some limitations in locomotor performance of T. hispidus resulting in decreased minimum flight initiation distance as infection rates increased. Individuals opted for a prolonged period of immobility to avoid capture. There was a negative relationship between helminthic loads and body temperatures in T. semitaeniatus, possibly due to decreased activity and thermoregulation rates, and increased use of shelters by lizards with high infection levels to avoid predation.


Brazilian Journal of Biology | 2012

New altitudinal records of the endemic species Cycloramphus brasiliensis (Anura, Cycloramphidae) from the Atlantic Rainforest in the state of Rio de Janeiro, southeastern Brazil.

Thiago Maia-Carneiro; Thiago Arnt Dorigo; Mauricio Almeida-Gomes; M. Van Sluys; Rocha Cf

were sampled in September and October, 2004 and between July 2007 and March 2010 using Visual Encounter Surveys (Crump and Scott, 1994) performed by transects, in two localities of Atlantic Forest in the state of Rio de Janeiro, southeastern Brazil: the Estacao Ecologica Estadual Paraiso (22° 29’ S and 42° 55’ W; elevation 150-290 m) and the Reserva Ecologica de Guapiacu (22° 24’ S and 42° 44’ W; elevation 40-400 m). These forested areas are approximately 9 km apart, and are made up of continuous forests, having different levels of regeneration and are composed predominantly of low montane and sub-montane tropical forest vegetation. The climate in the region is wet and warm, and annual rainfall varies from 2000 to 2500 mm. Mean annual temperature is about 24 oC (Rocha et al., 2007).We found individuals of


Brazilian Journal of Biological Sciences | 2016

Behavioral responses of Trachemys dorbigni (Dumeril & Bibron, 1835) (Testudines: Emydidae) facing a potential risk of predation

Thiago Maia-Carneiro; Thiago Arnt Dorigo; Carlos Frederico Duarte Rocha

Behavioral responses in front of potential predation risks are critical for survival and diverse among reptiles. Trachemys dorbigni (Duméril & Bibron, 1835) (Testudines: Emydidae) is a terrapin species of the Family Emydidae with geographical distribution along Southern South America. Here, we report behavioral responses displayed by a T. dorbigni individual facing potential risk of predation. After captured, the individual withdrawn head and limbs into the carapace and, shortly after released, it ran toward a deeper region of a pond and dig the muddy substrate through movements of its carapace and paws burying itself into the mud submerged in water. Withdrawal into the carapace, flight into water or a burrow, and similar burial behaviors occur in Testudines, but until now they were not reported in T. dorbigni. These animals might use the behavioral responses reported here when facing risks of predation, which may difficult capturing and therefore increase chances of survival.

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Thiago Arnt Dorigo

Rio de Janeiro State University

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Davor Vrcibradic

Universidade Federal do Estado do Rio de Janeiro

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Mauricio Almeida-Gomes

Federal University of Rio de Janeiro

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Monique Van Sluys

Rio de Janeiro State University

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Tatiana Motta-Tavares

Rio de Janeiro State University

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Gisele R. Winck

Rio de Janeiro State University

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Carlos Frederico

State University of Campinas

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Duarte Rocha

State University of Campinas

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M. Van Sluys

Rio de Janeiro State University

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