A diversidade biológica e os processos ecológicos do bioma Cerrado ainda são pouco conhecidos. Neste estudo são apresentadas informações acerca da estrutura da anurofauna do município de Barro Alto, estado de Goiás (Brasil Central). Cinco corpos d'água foram amostrados entre os anos de 2007 a 2010 (outubro-março), três deles associados à área florestal e dois associados à área aberta. Registraram-se 39 espécies de anuros, caracterizados como especialistas de hábitat aberto, florestal ou generalistas. A curva de acumulação de espécies apresentou a formação de uma assíntota, evidenciando que as técnicas e esforço de amostragens foram adequados para se estimar a riqueza de espécies de anuros na região. A riqueza foi influenciada pela umidade e temperatura, já que a maioria das espécies se reproduz na estação quente e chuvosa. Diferenças significativas na composição de espécies entre os sítios reprodutivos de áreas florestais e abertas foram registradas. A fauna de anuros no Cerrado parece ser constituída a partir da heterogeneidade horizontal dos hábitats no espaço. Assim, hábitats contrastantes no espaço são importantes para a manutenção da riqueza da anurofauna, e portanto, relevantes em termos conservacionistas.

The biological diversity and ecological processes in Cerrado biome are still poorly understood. Herein we present information about anuran species of the municipality of Barro Alto, state of Goiás (Central Brazil). Five water bodies were sampled between the years 2007 and 2010 (October-March), three of them associated with forested area and two with open areas. We recorded 39 anuran species, characterized as open habitat specialists, forest habitat specialists and generalists. The rarefaction curve shows an asymptote formation, which demonstrates adequate effort and sampling techniques to assess the species richness of the region. Species richness was influenced by air humidity and temperature, since most of the species reproduce in the rainy season. We found significant differences in species composition between breeding sites in open and forested areas. The anurofauna in Cerrado seems to be formed from habitat's horizontal heterogeneity in space. Thus, contrasting habitats in space are important for maintaining the anuran richness, and therefore relevant in conservation terms.

Epidemiological data from oral squamous cell carcinoma (OSCC) is mostly derived from North American, European and East Asian populations. OBJECTIVE: The aim of this study was to report the demographic and clinicopathological features from OSCC diagnosed in an Oral Pathology service in southeastern Brazil in an 8-year period. MATERIAL AND METHODS: All OSCC diagnosed from 2005 to 2012 were reviewed, including histological analysis of all hematoxylin and eosin stained slides and review of all demographic and clinical information from the laboratory records. RESULTS: A total of 346 OSCC was retrieved and males represented 67% of the sample. Mean age of the patients was 62.3 years-old and females were affected a decade older than males (p<0.001). Mean time of complaint with the tumors was 10 months and site distribution showed that the border of the tongue (37%), alveolar mucosa/gingiva (20%) and floor of mouth/ventral tongue (19%) were the most common affected sites. Mean size of the tumors was 3.4 cm, with no differences for males and females (p=0.091) and males reported both tobacco and alcohol consumption more frequently than females. Histological grade of the tumors revealed that 27%, 40% and 21% of the tumors were, respectively, classified as well-, moderately- and poorly-differentiated OSCC, 26 cases (7.5%) were microinvasive OSCC and 17 cases were OSCC variants. OSCC in males mostly affected the border of tongue, floor of mouth/ventral tongue and alveolar mucosa/gingival, while they were more frequent on the border of tongue, alveolar mucosa/gingival and buccal mucosa/buccal sulcus in females (p=0.004). CONCLUSIONS: The present data reflect the epidemiological characteristics of OSCC diagnosed in a public Oral Pathology laboratory in southeastern Brazil and have highlighted several differences in clinicopathological features when comparing male and female OSCC-affected patients.

O Cerrado é o segundo maior bioma brasileiro e é considerado um dos mais importantes hotspots de biodiversidade. Neste bioma foram registradas cerca de 150 espécies de anuros, das quais 30% são endêmicas. Entretanto, existem muitas áreas ainda não inventariadas, nas quais não se conhece quase nada sobre a diversidade de anuros. Assim, neste estudo apresentamos informações referentes a anurofauna do sudoeste do Estado de Goiás (Brasil Central), a qual vem sendo modificada principalmente pela agropecuária. Nesta região, 45 corpos d'água foram amostrados entre os meses de novembro/2007 a fevereiro/2008 e novembro/2008 a março/2009, localizados próximos a plantações de soja, cana-de-açúcar, pastagem e vegetação nativa. No total, foram registrados adultos e girinos de 36 espécies de anuros, a maioria comum de áreas abertas. As curvas de acumulação de espécies, tanto para adultos quanto para girinos, apresentaram a formação de uma assíntota, o que indica uma baixa probabilidade de registro de novas espécies mesmo com a amostragem de outros corpos d'água. Nesta área com forte influência de impactos agrícolas, a riqueza encontrada representa aproximadamente 1/4 do total de espécies conhecidas para o bioma Cerrado.

The Cerrado is the second largest biome in Brazil and is considered one of most important among the biodiversity hotspots. In this biome can be found about 150 anurans species, from which 30% are endemic. However, there are many Cerrado areas that have little information gathered about the anuran biodiversity. Thus, in this study we present the result of an inventory of anurans species from the southwest region of Goiás State (Central Brazil). In this region, we sampled 45 water bodies, located near soybean and sugar-cane cultures, pastures and natural vegetation, from November/2007 to February/2008 and from November/2008 to March/2009. Altogether, adults and tadpoles of 36 species were registered, with the majority of species registered in association to open areas. The rarefied curve of species richness show an asymptote formation, which indicates that the chance to add species to the inventory is low, even with additional habitats sampling. Therefore, our results reveal high species richness in the present sampled region, which represented almost one fourth of all species found in Cerrado.