Instituto Biotropicos

Diamantina, Brazil

Instituto Biotropicos

Diamantina, Brazil
Time filter
Source Type

de Pinho F.F.,Instituto Biotropicos | Ferreira G.B.,Instituto Biotropicos | Paglia A.P.,Federal University of Minas Gerais
Zoologia | Year: 2017

The objectives of this study were to determine the richness of medium and large mammal species in two protected areas of the Espinhaço Mountain Range, state of Minas Gerais, Brazil; and to investigate the factors affecting the occurrence of those species. To accomplish that we placed 49 camera traps activated by heat and motion at Rio Preto State Park (RPSP) and 48 at Sempre Vivas National Park (SVNP). We also collected data on three environmental variables: vegetation physiognomy, elevation and wildfire frequency, to evaluate the influence of these factors on species richness and use intensity (inferred from camera trap detection rate) by large mammals. We recorded 23 large mammal species in the two parks combined. The lowest species richness was found at the rupestrian habitat of RPSP, and in the open grasslands of SVNP. The forest and savannah physiognomies were used more intensively by large mammals. Species richness was higher and use was greater at lower elevations of RPSP. In SVNP, fire frequency did not affect species richness or use intensity. The savannah habitat had very similar richness compared to the forests of the two protected areas. The high species richness and use intensity observed in these forest habitats highlights the importance of riparian environments in the Cerrado biome. The highest species richness and use intensity observed at low elevation follows patterns found in the literature, probably due to variation in the vegetation, which results in greater resource availability. Although rupestrian habitats at high elevations of the Espinhaço Range are known to have a high degree of endemism for some taxa, large mammal richness and use were not high in this habitat. These results indicate that the protection of native vegetation at lower elevations is crucial for the long-term conservation of large mammals in the Espinhaço Range. © 2017, Sociedade Brasileira de Zoologia. All rights reserved.

Santos M.T.T.,São Paulo State University | Pezzuti T.L.,President Antônio Carlos University | Barata I.M.,University of Kent | Barata I.M.,Instituto Biotropicos | And 2 more authors.
South American Journal of Herpetology | Year: 2017

We describe the external larval morphology of the microendemic leptodactylid frog Crossodactylodes itambe from the 'campo rupestre' of the Espinhaço Mountain Range in the state of Minas Gerais, Brazil. The species identity of the only previously described Crossodactylodes tadpole cannot be confirmed, making this the first description of a tadpole of known taxonomic identity for the genus. The tadpole of C. itambe differs from the previously described Crossodactylodes tadpole in total length, origin of dorsal fin, development of tail musculature, spiracle position, absence of inner wall of spiracle and shape, and direction of vent tube. Characters such as narrow lateral gaps of marginal papillae and the distinct medial serration on the oral face of the upper jaw are proposed as putative synapomorphies for the genus. Tadpoles of C. itambe occur exclusively in the axils of the rupicolous bromeliad Vriesea medusa. Observation on the natural history, eggs, and larvae are also reported. © 2017 Brazilian Society of Herpetology.

Barata I.M.,Instituto Biotropicos | Santos M.T.T.,Federal University of Pernambuco | Leite F.S.F.,Federal University of Pernambuco | Garcia P.C.A.,Federal University of Pernambuco
Zootaxa | Year: 2013

The genus Crossodactylodes comprises three species of Atlantic Rainforest endemic frogs strictly dependent on bromeli-ads where they spend their entire life cycle. The current geographic distribution of the genus covers highland areas of Atlantic Rainforest in the States of Rio de Janeiro and Espírito Santo, Southeastern Brazil. We describe a new species of the genus from Parque Estadual do Pico do Itambé, at Santo Antônio do Itambé municipality, State of Minas Gerais, Southeastern Brazil. Crossodactylodes itambe sp. nov. is characterized by the following combination of traits: male SVL 16.2 ± 1.3 (14.0-17.6 mm, n = 10), female SVL 16.2 ± 1.0 (13.5-18.0 mm, n = 15); snout short, rounded in dorsal view, sloping in lateral view; absence of vocal sac and vocal slits in males; absence of vomerine teeth; males with upper arms and forearms hypertrophied; cloacal flap prominent, simple; dorsal skin coarsely granular. The new species inhabits rupicolous bromeliads in open areas of rocky fields, and is recorded in altitudes between 1836 and 2062 m above sea level. This record extends the genus distribution for about 325 km northwest from where it was known. Crossodactylodes sp. nov. is the only species of the genus that occurs in open field habitats (campos rupestres), in very high altitudes of a non-costal mountain range (the Espinhaço Range). Copyright © 2013 Magnolia Press.

Goulart M.F.,Federal University of Minas Gerais | Goulart M.F.,Instituto Biotropicos | Lovato M.B.,Federal University of Minas Gerais | de Vasconcellos Barros F.,Federal University of Minas Gerais | And 3 more authors.
Biotropica | Year: 2011

Light intensity and heterogeneity are some of the main environmental factors that differ between forest and savanna habitats, and plant species from these habitats form distinct functional types. In this study, we tested the hypothesis that not only differences in morphological and physiological traits but also phenotypic plasticity in response to light are involved in adaptation to forest and savanna habitats by investigating ecotypic differentiation between populations of Plathymenia reticulata (Leguminosae: Mimosoideae), a tree from the Brazilian Atlantic Forest and the Brazilian Cerrado (savanna). Seeds from four natural populations (one from each biome core area and two from ecotonal regions) were grown in a common garden with four light treatments. Fifteen morphological and physiological characteristics were evaluated until individuals reached 6 mo old. Comparisons among populations showed differences for seven traits in at least one light treatment. These differences pointed to local adaptation to different biomes. Populations showed different levels of phenotypic plasticity in response to light in seven traits. Higher plasticity was found either in the forest core population or ecotonal populations; lower values were found in the cerrado core population. Lower plasticity in the cerrado population emphasizes the stress resistant syndrome, as lower plasticity is probably advantageous in a habitat where a conservative resource use is crucial. Higher plasticity in forest individuals suggests higher ability in exploiting the light heterogeneity in this habitat. Also, higher plasticity in ecotonal populations can be important to ensure the maintenance of P. reticulata in these temporally and spatially dynamic areas. Abstract in Portugese is available at © 2011 The Author(s). Journal compilation © 2011 by The Association for Tropical Biology and Conservation.

Ferreira G.B.,Instituto Biotropicos | Oliveira M.J.R.,Instituto Biotropicos | De Paula R.C.,Instituto Chico Mendes Of Conservacao Da Biodiversidade | Rodrigues F.H.G.,Federal University of Minas Gerais | Carmo E.D.C.,Sustentar Meio Ambiente
ORYX | Year: 2015

The bush dog Speothos venaticus, a rare Near Threatened South American canid that lives in packs, was thought to be extinct in Minas Gerais state, south-eastern Brazil, until recently. Here, we report four recent records of the species in Minas Gerais, the first in the state since the description of the species in 1842. All records are from the Cerrado ecosystem in the north and north-west of the state; two are from animals found dead, one from footprints and another from a camera trap. Three of the records were inside or close (< 10 km) to strict protected areas, in a region recognized as the Protected Areas Mosaic Sertão Veredas-Peruaçu, where we expect any new records of the bush dog to be found. We discuss the low probability of detecting the bush dog and the main regional threats to the species, and emphasize the need to protect large and interconnected natural areas and keep them free of domestic dogs to avoid the extinction of the bush dog in Minas Gerais. © 2014 Fauna & Flora International.

Barata I.M.,University of Kent | Barata I.M.,Instituto Biotropicos | Uhlig V.M.,Setor Leste Universitario | Silva G.H.,Instituto Biotropicos | And 3 more authors.
South American Journal of Herpetology | Year: 2016

Protected areas (PAs) cover a small proportion of the Earth's surface and most species are not covered by the current network. Amphibians are the least represented group in PAs around the world and expanding the network is still the major recommendation for species conservation. We evaluated the effectiveness of PAs in safeguarding endemic amphibians in the Cerrado biome of Minas Gerais state, southeastern Brazil. We conducted a gap analysis to highlight site-based conservation actions for target species within study site. We extracted occurrence points from the national database and calculated the intersection between the minimum convex polygon and natural vegetation remnants for each species. For each target species, we calculated the percentage of the range covered by PAs and assessed the scientific knowledge based on academic publications between 1950-2015. We recorded 206 amphibians in Minas Gerais, of which 127 occur in the Cerrado. We identified 24 target species and concluded that 80% are insufficiently protected by the current PA network. A quarter of the species have zero coverage and most species have < 30% of their range legally protected. In southwestern Minas Gerais, we recommend habitat restoration and connectivity to provide additional habitat to target species. In western Minas Gerais, the creation of PA seems to be the best solution. The distribution of target species is concentrated in the Espinhaço Mountain Range, where we recommend the establishment of biodiversity corridors. We examined 246 publications, most of which focus on taxonomy. Few species have sufficient information to have their conservation status re-assessed, with only 26.8% of publications containing specific information on conservation. Scientific knowledge must be improved for all research areas, especially species distributions and ecology, to support evidence-based conservation and management actions. © 2016 Brazilian Society of Herpetology.

Graciolli G.,Federal University of Mato Grosso do Sul | Azevedo A.A.,Instituto Biotropicos
Revista Brasileira de Entomologia | Year: 2011

Ectoparasites of bats (Chiroptera, Furipteridae), with a description of a new species of Synthesiostrebla Townsend (Diptera, Streblidae) from Brazil. Records of ectoparasites from furipterid bats are restricted to bat flies (Streblidae). Only three streblid species were known before this work: Trichobius pallidus (Curran, 1934), Strebla wiedemanni Kolenati, 1856, and Synthesiostrebla amorphochili Townsend, 1913. A second species of Synthesiostrebla is described here, increasing the geographical distribution of the genus to east of the Andes. Synthesiostrebla cisandina sp. nov. was found on Furipterus horrens (Cuvier, 1828) in southeastern Brazil. Anterior parts of the body, wing, tergite 7, epiproct and male genitalia are illustrated, and a key to females for species of Synthesiostrebla is provided.

Barata I.M.,University of Kent | Barata I.M.,Instituto Biotropicos | Correia C.M.,Instituto Biotropicos | Ferreira G.B.,Instituto Biotropicos | And 2 more authors.
Herpetological Conservation and Biology | Year: 2016

The southern portion of the Espinhaço Range in Brazil is recognized worldwide as a priority area for biodiversity conservation, and it contains a high number of endemic anuran species. We conducted field surveys and compiled published data on amphibian community composition from seven sites within Espinhaço Mosaic (EM; 910,000 ha) to explore the contribution of this area to amphibian species richness in the southern Espinhaço Range. We aimed to describe local and regional community composition and to identify priorities for future amphibian surveys and inventories in the study area. We consider the EM a species-rich area sheltering 73 anuran species, which represents 36.5% of the amphibians known for the state of Minas Gerais, 57.5% of those in the Cerrado biome, and almost 70% of the species in the Espinhaço Range. Unequal sampling effort is a major concern in the study area, and species richness in under-sampled sites might increase as new assessments are conducted. Therefore, sites for which no data are available should be prioritized for species inventories. Although an increase in sampling effort is likely to reduce the proportion of exclusive species (i.e., species known to occur in only one of the seven investigated sites), we conclude that the levels of endemicity indicate a high number of narrowly distributed (micro-endemic) species. We believe anuran community composition and similarities in composition among the sites investigated are influenced by the gradient between the Cerrado and Atlantic Rainforest biomes, which deserves further investigation. © 2016. Izabella M. Barata. All rights reserved.

Mafia P.O.,Instituto Biotropicos | Mafia P.O.,Federal University of Ouro Preto
Check List | Year: 2015

I recorded an individual of Rock Tapaculo (Scytalopus petrophilus) on 15 October 2010, in a rocky outcrop (campo rupestre) formation at Sempre-Vivas National Park, at Bocaiúva municipality, northern Minas Gerais, Brazil. This record extends the northern limit of distribution of this species. © 2015 Check List and Authors.

Loading Instituto Biotropicos collaborators
Loading Instituto Biotropicos collaborators