We describe here the first documented nest and nestling of the Chestnut-crowned Foliage-gleaner (... more We describe here the first documented nest and nestling of the Chestnut-crowned Foliage-gleaner (Automolus rufipileatus) in Brazil. They were recorded in the municipality of Vitória do Xingu, state of Pará, at Amazonian domains. As other members of the genus Automolus, the nest of A. rufipileatus was in a steep clay bank on the edge of a small stream, comprising an inclined entrance tunnel to access two distinct chambers. The nest can be classified as a cavity with inclined tunnel. When discovered, the nest housed a nestling in advanced stage of development; therefore, it was not possible to describe the eggs, incubation period and nestling’s initial development. We encourage additional studies on Chestnut-crowned Foliage-gleaner reproductive biology.
Boletim do Museu Paraense Emílio Goeldi - Ciências Naturais, 2022
A ordem Didelphimorphia é composta somente pela família Didelphidae, exclusiva do continente amer... more A ordem Didelphimorphia é composta somente pela família Didelphidae, exclusiva do continente americano. Esta família é amplamente distribuída na região Neotropical, ocupando grande variedade de hábitats. A literatura registra 68 espécies de didelfídeos no Brasil, das quais 24 delas têm ocorrência confirmada para a Bacia do Alto Paraguai (BAP). As espécies presentes nessa região pertencem a três subfamílias – Glironiinae (1 gênero, 1 espécie), Caluromyinae (1, 2) e Didelphinae (11, 21) – e, dentre elas, inclui-se Monodelphis saci, espécie há pouco descrita, bem como outras três, recentemente validadas em nível de espécie, Gracilinanus peruanus, Philander canus e Marmosa rapposa, e duas espécies ameaçadas de extinção, Thylamys karimii e T. macrurus. A proposta deste artigo foi fazer um levantamento de todas as espécies de marsupiais registradas na BAP até o presente momento, trazendo, na medida da disponibilidade de dados, uma breve descrição morfológica de cada uma das 24 espécies, b...
Boletim do Museu Paraense Emílio Goeldi - Ciências Naturais, 2022
A ordem Rodentia representa aproximadamente 39% da diversidade mundial de mamíferos, sendo que pa... more A ordem Rodentia representa aproximadamente 39% da diversidade mundial de mamíferos, sendo que para o Brasil são reconhecidos atualmente 76 gêneros e 263 espécies. Para a Bacia do Alto Paraguai (BAP), foi registrada a ocorrência de 42 espécies, distribuídas em oito famílias: Sciuridae (2 gêneros, 2 espécies), Cricetidae (15, 27), Caviidae (3, 3), Ctenomyidae (1, 1), Cuniculidae (1, 1), Dasyproctidae (1, 1), Erethizontidae (1, 1) e Echimyidae (5, 6). Dentre as espécies registradas na BAP, duas foram recentemente descritas, Akodon kadiweu e Oecomys matogrossensis, uma revalidada em nível de espécie, Coendou boliviensis, e três são alvo de caça, Cuniculus paca, Dasyprocta azarae e Hydrochoerus hydrochaeris. A proposta deste artigo foi fazer um levantamento de todas as espécies de roedores registradas na BAP até o presente momento, trazendo, na medida da disponibilidade de dados, a descrição morfológica de cada uma das 42 espécies, bem como a comparação com espécies congêneres ou asseme...
Pseudoryzomys simplex is a small to medium sized terrestrial rodent confined to lowland open area... more Pseudoryzomys simplex is a small to medium sized terrestrial rodent confined to lowland open areas with strong seasonal rainfall throughout the Chaco, Cerrado and Caatinga. Despite its extensive range, the species is difficult to trap. In this report we provide the first record of P. simplex in the Pantanal, where three specimens were collected in a pasture of exotic grass. The specimens are morpometrically similar to the population from Paraguay (Chaco). In this sense, our report shows how interesting a taxonomic review of the species would be to better understand the real significance of the geographic variation herein observed.
SummaryThe use of forest habitats and migratory patterns are still unclear for tropical birds. So... more SummaryThe use of forest habitats and migratory patterns are still unclear for tropical birds. Some are described herein for the Pantanal wetlands of Brazil. Thus, our aim was to describe different patterns of forest habitat use by birds and classify the birds’ migration patterns for the northern Pantanal region, Brazil. From September 1999 to December 2003, we sampled four forest types, during which we collected standardised data with mist-net captures and point counts, with additionalad lib.observations. We recorded 214 bird species: 113 (52.8%) were total habitat generalists; 41 (19.2%) were forest generalists; 19 (8.9%) were flooded habitat specialists; and 28 (13.1%) were not classified due to the low number of records; three other categories of habitat use divide the remaining 6% of records. About half of the species showed some migratory behaviour, these were classified by us according to the season they spent in the area: 121 species (56.5%) asresidents, 28 (13.1%) asrun-off...
Abstract Surrogate groups have been used as a useful tool for biodiversity conservation. The occu... more Abstract Surrogate groups have been used as a useful tool for biodiversity conservation. The occurrence and distribution of a taxon can be predicted based on the occurrence of other biological species or groups. Consequently, the current study sought to determine the presence of one or more surrogate groups in a seasonally flooded region in the South American Pantanal wetlands. Data on the occurrence and distribution of species were collected at Pantanal Long-Term Sampling Sites (PLTSS). We assayed for congruence between woody plants, herbaceous plants, spiders, anurans, birds and small mammals using Mantel tests. We also evaluated the effect of selected environmental and spatial factors on each biological group, using variance partitioning. Based on the average correlation between groups, the group with the highest congruence was woody plants, and it was therefore considered the best surrogate group for the PLTSS area. The soil texture (percentage of silt, sand and clay) are not important in defining plant group distributions. However, plants were distributed as a function of flood intensity and hydroperiod. The effect of flooding and vegetation structure differed between the analyzed zoological taxa. Additionally, spatial factors, here represented by Moran Eigenvector Maps, were important for all evaluated biological groups.
Taking into account the diversity of small terrestrial mammals of the Pantanal, the present study... more Taking into account the diversity of small terrestrial mammals of the Pantanal, the present study aimed to verify the occurrence of infection by Ehrlichia spp., Anaplasma spp., Rickettsia spp., Hepatozoon spp., Babesia spp. and parasitism by ticks in non-volant small mammals collected in the Brazilian Pantanal. Samples of blood, liver and spleen were collected from 64 captured animals, 22 marsupials and 42 rodents. Pathogen detection was performed by the use of genus-specific Polymerase Chain Reaction (PCR) assays. Ticks collected from the animals consisted of Amblyomma sculptum and Amblyomma triste nymphs, and Ornithodoros guaporensis larvae. None of the vertebrate samples (blood, liver, or spleen) yielded detectable DNA of Rickettsia spp. or Ehrlichia spp. The blood of the rodent Hylaeamys megacephalus yielded an Anaplasma sp. genotype (partial 16S rRNA gene) 99% similar to multiple Anaplasma spp. genotypes around the world. The blood of three rodents of the species Calomys callosus were positive for a novel Hepatozoon sp. agent, phylogenetically related (18S rDNA gene) to distinct Hepatozoon genotypes that have been detected in rodents from different parts of the world. One marsupial (Monodelphis domestica) and three rodents (Thrichomys pachyurus) were positive to novel piroplasmid genotypes, phylogenetically (18S rDNA gene) related to Theileria bicornis, Cytauxzoon manul, and Cytauxzoon felis. The present study provides the first molecular detection of Hepatozoon sp. and piroplasmids in small mammals in Brazil. Additionally, we expanded the distribution of O. guaporensis to Brazil, since this tick species was previously known to occur only in Bolivia.
Tese (doutorado)—Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Grad... more Tese (doutorado)—Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Biologia Animal, 2008. Os pequenos mamíferos não voadores foram estudados na Faz. Aparecida, município de Nossa Senhora do Livramento (16º14’19’’S e 56º22’51’’W), Pantanal de Poconé, MT, Brasil. Os objetivos foram descrever aspectos da história natural, da biologia reprodutiva e parâmetros populacionais de algumas espécies, além de descrever e comparar as comunidades de pequenos mamíferos em três hábitats florestais representativos da região. Ao todo três métodos de coleta foram usados para inventariar as espécies: transectos lineares, programa de monitoramento e coletas aleatórias. Os dois primeiros métodos usaram armadilhas do tipo Sherman e Gaiola de Gancho. Os transectos lineares foram montados em fisionomias abertas e fechadas, entre junho e agosto de 2005. Todos os animais capturados foram coletados para formar uma coleção de referência. O programa de monitoramento foi rea...
We describe here the first documented nest and nestling of the Chestnut-crowned Foliage-gleaner (... more We describe here the first documented nest and nestling of the Chestnut-crowned Foliage-gleaner (Automolus rufipileatus) in Brazil. They were recorded in the municipality of Vitória do Xingu, state of Pará, at Amazonian domains. As other members of the genus Automolus, the nest of A. rufipileatus was in a steep clay bank on the edge of a small stream, comprising an inclined entrance tunnel to access two distinct chambers. The nest can be classified as a cavity with inclined tunnel. When discovered, the nest housed a nestling in advanced stage of development; therefore, it was not possible to describe the eggs, incubation period and nestling’s initial development. We encourage additional studies on Chestnut-crowned Foliage-gleaner reproductive biology.
Boletim do Museu Paraense Emílio Goeldi - Ciências Naturais, 2022
A ordem Didelphimorphia é composta somente pela família Didelphidae, exclusiva do continente amer... more A ordem Didelphimorphia é composta somente pela família Didelphidae, exclusiva do continente americano. Esta família é amplamente distribuída na região Neotropical, ocupando grande variedade de hábitats. A literatura registra 68 espécies de didelfídeos no Brasil, das quais 24 delas têm ocorrência confirmada para a Bacia do Alto Paraguai (BAP). As espécies presentes nessa região pertencem a três subfamílias – Glironiinae (1 gênero, 1 espécie), Caluromyinae (1, 2) e Didelphinae (11, 21) – e, dentre elas, inclui-se Monodelphis saci, espécie há pouco descrita, bem como outras três, recentemente validadas em nível de espécie, Gracilinanus peruanus, Philander canus e Marmosa rapposa, e duas espécies ameaçadas de extinção, Thylamys karimii e T. macrurus. A proposta deste artigo foi fazer um levantamento de todas as espécies de marsupiais registradas na BAP até o presente momento, trazendo, na medida da disponibilidade de dados, uma breve descrição morfológica de cada uma das 24 espécies, b...
Boletim do Museu Paraense Emílio Goeldi - Ciências Naturais, 2022
A ordem Rodentia representa aproximadamente 39% da diversidade mundial de mamíferos, sendo que pa... more A ordem Rodentia representa aproximadamente 39% da diversidade mundial de mamíferos, sendo que para o Brasil são reconhecidos atualmente 76 gêneros e 263 espécies. Para a Bacia do Alto Paraguai (BAP), foi registrada a ocorrência de 42 espécies, distribuídas em oito famílias: Sciuridae (2 gêneros, 2 espécies), Cricetidae (15, 27), Caviidae (3, 3), Ctenomyidae (1, 1), Cuniculidae (1, 1), Dasyproctidae (1, 1), Erethizontidae (1, 1) e Echimyidae (5, 6). Dentre as espécies registradas na BAP, duas foram recentemente descritas, Akodon kadiweu e Oecomys matogrossensis, uma revalidada em nível de espécie, Coendou boliviensis, e três são alvo de caça, Cuniculus paca, Dasyprocta azarae e Hydrochoerus hydrochaeris. A proposta deste artigo foi fazer um levantamento de todas as espécies de roedores registradas na BAP até o presente momento, trazendo, na medida da disponibilidade de dados, a descrição morfológica de cada uma das 42 espécies, bem como a comparação com espécies congêneres ou asseme...
Pseudoryzomys simplex is a small to medium sized terrestrial rodent confined to lowland open area... more Pseudoryzomys simplex is a small to medium sized terrestrial rodent confined to lowland open areas with strong seasonal rainfall throughout the Chaco, Cerrado and Caatinga. Despite its extensive range, the species is difficult to trap. In this report we provide the first record of P. simplex in the Pantanal, where three specimens were collected in a pasture of exotic grass. The specimens are morpometrically similar to the population from Paraguay (Chaco). In this sense, our report shows how interesting a taxonomic review of the species would be to better understand the real significance of the geographic variation herein observed.
SummaryThe use of forest habitats and migratory patterns are still unclear for tropical birds. So... more SummaryThe use of forest habitats and migratory patterns are still unclear for tropical birds. Some are described herein for the Pantanal wetlands of Brazil. Thus, our aim was to describe different patterns of forest habitat use by birds and classify the birds’ migration patterns for the northern Pantanal region, Brazil. From September 1999 to December 2003, we sampled four forest types, during which we collected standardised data with mist-net captures and point counts, with additionalad lib.observations. We recorded 214 bird species: 113 (52.8%) were total habitat generalists; 41 (19.2%) were forest generalists; 19 (8.9%) were flooded habitat specialists; and 28 (13.1%) were not classified due to the low number of records; three other categories of habitat use divide the remaining 6% of records. About half of the species showed some migratory behaviour, these were classified by us according to the season they spent in the area: 121 species (56.5%) asresidents, 28 (13.1%) asrun-off...
Abstract Surrogate groups have been used as a useful tool for biodiversity conservation. The occu... more Abstract Surrogate groups have been used as a useful tool for biodiversity conservation. The occurrence and distribution of a taxon can be predicted based on the occurrence of other biological species or groups. Consequently, the current study sought to determine the presence of one or more surrogate groups in a seasonally flooded region in the South American Pantanal wetlands. Data on the occurrence and distribution of species were collected at Pantanal Long-Term Sampling Sites (PLTSS). We assayed for congruence between woody plants, herbaceous plants, spiders, anurans, birds and small mammals using Mantel tests. We also evaluated the effect of selected environmental and spatial factors on each biological group, using variance partitioning. Based on the average correlation between groups, the group with the highest congruence was woody plants, and it was therefore considered the best surrogate group for the PLTSS area. The soil texture (percentage of silt, sand and clay) are not important in defining plant group distributions. However, plants were distributed as a function of flood intensity and hydroperiod. The effect of flooding and vegetation structure differed between the analyzed zoological taxa. Additionally, spatial factors, here represented by Moran Eigenvector Maps, were important for all evaluated biological groups.
Taking into account the diversity of small terrestrial mammals of the Pantanal, the present study... more Taking into account the diversity of small terrestrial mammals of the Pantanal, the present study aimed to verify the occurrence of infection by Ehrlichia spp., Anaplasma spp., Rickettsia spp., Hepatozoon spp., Babesia spp. and parasitism by ticks in non-volant small mammals collected in the Brazilian Pantanal. Samples of blood, liver and spleen were collected from 64 captured animals, 22 marsupials and 42 rodents. Pathogen detection was performed by the use of genus-specific Polymerase Chain Reaction (PCR) assays. Ticks collected from the animals consisted of Amblyomma sculptum and Amblyomma triste nymphs, and Ornithodoros guaporensis larvae. None of the vertebrate samples (blood, liver, or spleen) yielded detectable DNA of Rickettsia spp. or Ehrlichia spp. The blood of the rodent Hylaeamys megacephalus yielded an Anaplasma sp. genotype (partial 16S rRNA gene) 99% similar to multiple Anaplasma spp. genotypes around the world. The blood of three rodents of the species Calomys callosus were positive for a novel Hepatozoon sp. agent, phylogenetically related (18S rDNA gene) to distinct Hepatozoon genotypes that have been detected in rodents from different parts of the world. One marsupial (Monodelphis domestica) and three rodents (Thrichomys pachyurus) were positive to novel piroplasmid genotypes, phylogenetically (18S rDNA gene) related to Theileria bicornis, Cytauxzoon manul, and Cytauxzoon felis. The present study provides the first molecular detection of Hepatozoon sp. and piroplasmids in small mammals in Brazil. Additionally, we expanded the distribution of O. guaporensis to Brazil, since this tick species was previously known to occur only in Bolivia.
Tese (doutorado)—Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Grad... more Tese (doutorado)—Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Biologia Animal, 2008. Os pequenos mamíferos não voadores foram estudados na Faz. Aparecida, município de Nossa Senhora do Livramento (16º14’19’’S e 56º22’51’’W), Pantanal de Poconé, MT, Brasil. Os objetivos foram descrever aspectos da história natural, da biologia reprodutiva e parâmetros populacionais de algumas espécies, além de descrever e comparar as comunidades de pequenos mamíferos em três hábitats florestais representativos da região. Ao todo três métodos de coleta foram usados para inventariar as espécies: transectos lineares, programa de monitoramento e coletas aleatórias. Os dois primeiros métodos usaram armadilhas do tipo Sherman e Gaiola de Gancho. Os transectos lineares foram montados em fisionomias abertas e fechadas, entre junho e agosto de 2005. Todos os animais capturados foram coletados para formar uma coleção de referência. O programa de monitoramento foi rea...
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