Time filter

Source Type

Da Silva M.,Federal University of Viçosa | Pinho D.B.,Federal University of Viçosa | Pereira O.L.,Federal University of Viçosa | Fernandes F.M.,Fundacao Zoo Botanica de Belo Horizonte | Barreto R.W.,Federal University of Viçosa
PLoS ONE | Year: 2016

A survey of foliicolous fungi associated with Dimorphandra wilsonii and Dimorphandra mollis (Fabaceae) was conducted in the state of Minas Gerais, Brazil. Dimorphandra wilsonii is a tree species native to the Brazilian Cerrado that is listed as critically endangered. Fungi strictly depending on this plant species may be on the verge of co-extinction. Here, results of the pioneering description of this mycobiota are provided to contribute to the neglected field of microfungi conservation. The mycobiota of D. mollis, which is a common species with a broad geographical distribution that co-occurs with D. wilsonii, was examined simultaneously to exclude fungal species occurring on both species from further consideration for conservation because microfungi associated with D. wilsonii should not be regarded as under threat of co-extinction. Fourteen ascomycete fungal species were collected, identified, described and illustrated namely: Byssogene wilsoniae sp. nov., Geastrumia polystigmatis, Janetia dimorphandra-mollis sp. nov., Janetia wilsoniae sp. nov., Johansonia chapadiensis, Microcalliopsis dipterygis, Phillipsiella atra, Piricauda paraguayensis, Pseudocercospora dimorphandrae sp. nov., Pseudocercosporella dimorphandrae sp. nov., Ramichloridiopsis wilsoniae sp. and gen. nov., Stomiopeltis suttoniae, Trichomatomyces byrsonimae and Vesiculohyphomyces cerradensis. Three fungi were exclusively found on D. wilsonii and were regarded as potentially threatened of extinction: B. wilsoniae, J. wilsoniae and R. wilsoniae. © 2016 da Silva et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


PubMed | Fundacao Zoo Botanica de Belo Horizonte and Federal University of Viçosa
Type: Journal Article | Journal: PloS one | Year: 2016

A survey of foliicolous fungi associated with Dimorphandra wilsonii and Dimorphandra mollis (Fabaceae) was conducted in the state of Minas Gerais, Brazil. Dimorphandra wilsonii is a tree species native to the Brazilian Cerrado that is listed as critically endangered. Fungi strictly depending on this plant species may be on the verge of co-extinction. Here, results of the pioneering description of this mycobiota are provided to contribute to the neglected field of microfungi conservation. The mycobiota of D. mollis, which is a common species with a broad geographical distribution that co-occurs with D. wilsonii, was examined simultaneously to exclude fungal species occurring on both species from further consideration for conservation because microfungi associated with D. wilsonii should not be regarded as under threat of co-extinction. Fourteen ascomycete fungal species were collected, identified, described and illustrated namely: Byssogene wilsoniae sp. nov., Geastrumia polystigmatis, Janetia dimorphandra-mollis sp. nov., Janetia wilsoniae sp. nov., Johansonia chapadiensis, Microcalliopsis dipterygis, Phillipsiella atra, Piricauda paraguayensis, Pseudocercospora dimorphandrae sp. nov., Pseudocercosporella dimorphandrae sp. nov., Ramichloridiopsis wilsoniae sp. and gen. nov., Stomiopeltis suttoniae, Trichomatomyces byrsonimae and Vesiculohyphomyces cerradensis. Three fungi were exclusively found on D. wilsonii and were regarded as potentially threatened of extinction: B. wilsoniae, J. wilsoniae and R. wilsoniae.


de Azevedo C.S.,Federal University of Minas Gerais | Ferraz J.B.,Fundacao Zoo Botanica de Belo Horizonte | Tinoco H.P.,Fundacao Zoo Botanica de Belo Horizonte | Young R.J.,Pontifica University Catolica Of Minas Gerais | Rodrigues M.,Federal University of Minas Gerais
Acta Ethologica | Year: 2010

The aim of this study was to evaluate activity-time budget, habitat use and how seasonality and group size influence the expression of greater rhea behaviours. Greater rheas are threatened South American birds; habitat loss, predation and hunting are the main factors responsible for population declines. The study was conducted in farmlands within a matrix of commercial Eucalyptus plantation and remnants of natural habitats of cerrado vegetation (savannah-like) in southeastern Brazil. Rhea groups were located visually in different habitats visited monthly from January 2004 to December 2005. Time spent searching greater rheas in each habitat was equally distributed. Data were collected using scan sampling with instantaneous recording of behaviours every minute. The time-activity budget of greater rheas was influenced by habitat structure, time of the day, season and group size. Rheas spent more time in open areas than in forested areas (p < 0.001). Vigilance behaviours were more displayed in forested areas, in the dry season and by solitary and small groups of birds. Resting behaviours occurred more often in open lands and within groups with more than three rheas. Food availability, good visibility and low human presence are the possible factors for the preference of greater rheas for pasturelands. The results support the resource availability hypothesis, where it is expected that habitats with a higher food availability will be more used by the animals, group size hypothesis, where the scarcity of resources will lead to smaller groups of animals and that forestry modifies greater rheas habitat use and behaviours. © 2010 Springer-Verlag and ISPA.


Coelho C.M.,Fundacao Zoo Botanica de Belo Horizonte | Schetini de Azevedo C.,Pontifica University Catolica Of Minas Gerais Corac Ao Eucaristico | Young R.J.,Pontifica University Catolica Of Minas Gerais Corac Ao Eucaristico
Zoo Biology | Year: 2012

The maned wolf (Chrysocyon brachyurus, Illiger, 1815, Canidae) is a threatened species that inhabits the cerrados of Brazil, Argentina, Peru, Bolivia, Paraguay, and Uruguay. Captive maned wolves could be potentially used in reintroduction programs for species conservation; however, it is necessary that their behavior and cognitive abilities are conserved. Environmental enrichment is a tool used to stimulate captive animals and maintain a natural behavioral repertoire. To compare the variation of captive maned wolves' behavioral responses to environmental enrichment, we studied three maned wolves held by Belo Horizonte Zoo, Brazil. Foraging, interspecific, and intraspecific stimuli were offered to the animals and their responses were compared with a baseline and postenrichment treatments. The test was used to help in choosing which one of the three individuals would participate in a reintroduction project. The results showed that stimuli type did influence the animal's responses, and that individually wolves responded differently to foraging, interspecific, and intraspecific enrichment items (P80.05 for some behaviors in each enrichment category). The individual's personality seemed to influence their behavioral responses, with animals showing bold and shy responses, and this trait should be considered during decision makings for reintroduction. © 2011 Wiley Periodicals, Inc.


Gomes M.P.,Federal University of Minas Gerais | da Silva Cruz F.V.,Federal University of Minas Gerais | Borges F.V.,Federal University of Minas Gerais | Fonseca M.B.,Fundacao Zoo Botanica de Belo Horizonte | Garcia Q.S.,Federal University of Minas Gerais
Environmental and Experimental Botany | Year: 2016

We examined the germination and biochemical features of seeds of the threatened Brazilian species Dimorphandra wilsonii exposed to Zn. Although seed germination decreased with Zn exposure, the species was able to germinate even under high Zn doses (200 mg Zn l-1). Zn-toxicity was related to Zn-induced hydrogen peroxide (H2O2) accumulation, although increased activities of the H2O2-scavenging enzymes catalase and ascorbate peroxidase allowed seed germination in the presence of Zn. Using electron transport chain (ETC) inhibitors, we located the primary reactive oxygen species (ROS) production sites in seeds exposed to 200 mg Zn l-1. Rotenone (an inhibitor of mitochondrial ETC complex I) reduced H2O2 concentrations in embryos of Zn-treated seeds while KCN (an inhibitor of mitochondrial ETC complex IV) and dicumarol (an inhibitor of the plasma membrane ETC) showed no effects. The activities of enzymes related to mitochondrial ETC (Complexes I-IV) were reduced and the pool of oxidized ubiquinone was greater in Zn-treated seeds. Mitochondrial ETCs therefore appear to be the main sites for Zn-induced ROS formation, and that metal appears to act upstream of Complex IV. These results suggest that Zn does not block electron flow in the mitochondrial ETC but directly modify ubiquinone sites in Complexes I and II, resulting in H2O2 formation. © 2016 Elsevier B.V.


Fonseca M.B.,Fundacao Zoo Botanica de Belo Horizonte | Franca M.G.C.,Federal University of Minas Gerais | Zonta E.,Federal Rural University of Rio de Janeiro | Giorni V.,Federal University of Minas Gerais
Acta Botanica Brasilica | Year: 2010

Dimorphandra wilsonii Rizz. is a critically endangered tree species. It has been described for sites of higher soil fertility in the Cerrado Domain. However, it occurs nowadays in isolated areas of low natural fertility. To study species adaptation to oligotrophic conditions, plants were grown in a greenhouse in soils from oligotrophic sites but with different levels of fertility. After soil fertility analysis, the macronutrients (NPK) and lime doses to be used in each treatment were defi ned, resulting in a combination of two liming levels and three fertilization levels. After 220 days, the treatments that signifi cantly increased seedling growth were the one whose substrate was limed and fertilized with twice the prescribed NPK dosage, and the one with the indicated dosage of NPK but no liming. Liming itself did not promote growth enhancement, but favored increased growth response to increasing levels of nutrient availability. Root nodules were found in all the treatments, and the results led to the conclusion that D. wilsonii nutritional requirements are consistent with its original distribution sites in the Cerrado Domain. It was also possible to highlight nitrogen biological fi xation, an unusual feature in Caesalpinioideae, as an adaptive strategy for survival in areas of low nutrient availability.


PubMed | Fundacao Zoo Botanica de Belo Horizonte and Federal University of Minas Gerais
Type: | Journal: Environmental toxicology and chemistry | Year: 2017

The integrative effects of Zn (0, 75, 150 and 200mg l


PubMed | Fundacao Zoo Botanica de Belo Horizonte and Federal University of Minas Gerais
Type: Journal Article | Journal: Genome announcements | Year: 2016

The draft genome sequences of two Salmonella enterica serotype Infantis isolates are reported here. One of the strains was isolated from a western lowland gorilla (Gorilla gorilla gorilla) with colitis. The second strain was isolated from a reptile that inhabited the same premises. Whole-genome sequencing demonstrated that these isolates were not clonal.


PubMed | Fundacao Zoo Botanica de Belo Horizonte, University of Quebec at Montréal and Federal University of Minas Gerais
Type: Journal Article | Journal: Environmental pollution (Barking, Essex : 1987) | Year: 2016

Glyphosate-formulations are widely used in the Brazilian Cerrado (neotropical savanna) with little or no control, threatening population of the endangered species Dimorphandra wilsonii. We investigated the toxicity of different concentrations (0, 5, 25 and 50mgl


Silva V.S.,Fundacao Zoo Botanica de Belo Horizonte | Azevedo C.S.,Pontifical Catholic University of Minas Gerais
Lundiana | Year: 2013

The study of animal personality has important implications in conservation programs. When reintroduction is used for the preservation of a species, the survival ratio of reintroduced animals needs to be high. The determination of animal personality helps choosing the right animals, therefore increasing their survival chances and also increasing the reintroduction success. Three captive, male maned wolves were chosen for personality evaluation. Two personality tests were carried out and compared: The boldness score test estimated the level of boldness from a series of behaviors divided into bold, shy and fear categories; and questionnaires showed how zookeepers perceived the personality of the same three animals, while they were working with them. According to the boldness score calculation, Maned Wolf Two (MW2) was the boldest, followed, in order, by MW1 and MW3. According to the questionnaires, MW1 was the boldest, followed by MW2 and by MW3. Reasons for these contradictory results and variables that should be considered in both tests for increasing their accuracy are discussed. Used together, these tests showed to be helpful tools for choosing among individuals to be released in the wild. © 2013 Instituto de Cîncias Biológicas - UFMG.

Loading Fundacao Zoo Botanica de Belo Horizonte collaborators
Loading Fundacao Zoo Botanica de Belo Horizonte collaborators