RESUMEN
The Neotropical zone stands out for having the greatest richness of amphibians in the world. About 625 species of anurans are known on Atlantic Forest. The southeastern mountainous regions of Brazil called Serra do Mar and Serra da Mantiqueira, are very important areas for the diversity of anurans in the country because they shelter remaining strata of the Atlantic Forest that have several endemic species. The present study aims to expand the knowledge about the Serra da Mantiqueira anurans, specifically from the Rio Preto and Rio Grande upper basins. The study area comprised 10 sample centers. We realized 38 campaigns, lasting two days each. During this period, we used active search as visual and auditory cues. The passive search was comprised of pitfall traps. Bioacoustic analyses were used to determine the cryptic species. The sufficiency of the sampling effort was estimated through the accumulation curve using Bootstrap and Jackknife-1 as estimators. During the study 55 species were found, 40 of them in the basin of the Rio Preto, and 44 in the basin of the Rio Grande. Twenty-nine species were found in both areas. The Hylidae family was predominant, followed by Leptodactylidae. In addition to species of the Atlantic Forest, the place houses typical components of the Cerrado biome and altitudinal swamps with unexpected sympatries. This inventory expands the area of occurrence of Scinax duartei, a species considered threatened. Although adjacent to the oldest national park in Brazil, the composition of anuran species of this area was unknown until then.
A região Neotropical se destaca por possuir a maior riqueza de anfíbios do mundo. Cerca de 625 espécies de anuros são conhecidas na Mata Atlântica. As regiões montanhosas do sudeste do Brasil, denominadas Serra do Mar e Serra da Mantiqueira, são áreas muito importantes para a diversidade de anuros no país, pois abrigam estratos remanescentes da Mata Atlântica que possuem diversas espécies endêmicas. O presente estudo visa ampliar o conhecimento sobre os anuros da Serra da Mantiqueira, especificamente das altas bacias dos rios Preto e Grande. A área de estudo compreendeu 10 centros amostrais. Realizamos 38 campanhas, com duração de dois dias cada. Nesse período, utilizamos a busca ativa como pistas visuais e auditivas. A busca passiva foi composta por armadilhas de queda. Análises bioacústicas foram usadas para determinar as espécies crípticas. A suficiência do esforço amostral foi estimada através da curva de acumulação usando Bootstrap e Jackknife-1 como estimadores. Durante o estudo foram encontradas 55 espécies, sendo 40 delas na bacia do Rio Preto e 44 na bacia do Rio Grande. Vinte e nove espécies foram encontradas em ambas as bacias. A família Hylidae foi predominante, seguida por Leptodactylidae. Além de espécies da Mata Atlântica, o local abriga componentes típicos do bioma Cerrado e brejos de altitude com simpatrias inesperadas. Este inventário amplia a área de ocorrência de Scinax duartei, espécie considerada ameaçada. Embora adjacente ao parque nacional mais antigo do Brasil, a composição de espécies de anuros dessa área era desconhecida até então.
Asunto(s)
Animales , Anuros/crecimiento & desarrollo , Cuencas Hidrográficas , Ecosistema , BiodiversidadRESUMEN
The Neotropical zone stands out for having the greatest richness of amphibians in the world. About 625 species of anurans are known on Atlantic Forest. The southeastern mountainous regions of Brazil called Serra do Mar and Serra da Mantiqueira, are very important areas for the diversity of anurans in the country because they shelter remaining strata of the Atlantic Forest that have several endemic species. The present study aims to expand the knowledge about the Serra da Mantiqueira anurans, specifically from the Rio Preto and Rio Grande upper basins. The study area comprised 10 sample centers. We realized 38 campaigns, lasting two days each. During this period, we used active search as visual and auditory cues. The passive search was comprised of pitfall traps. Bioacoustic analyses were used to determine the cryptic species. The sufficiency of the sampling effort was estimated through the accumulation curve using Bootstrap and Jackknife-1 as estimators. During the study 55 species were found, 40 of them in the basin of the Rio Preto, and 44 in the basin of the Rio Grande. Twenty-nine species were found in both areas. The Hylidae family was predominant, followed by Leptodactylidae. In addition to species of the Atlantic Forest, the place houses typical components of the Cerrado biome and altitudinal swamps with unexpected sympatries. This inventory expands the area of occurrence of Scinax duartei, a species considered threatened. Although adjacent to the oldest national park in Brazil, the composition of anuran species of this area was unknown until then.