Os rios mais importantes são o Moa e Azul (região norte), e о Juruá Mirim (e seu afluente Rio Bra... more Os rios mais importantes são o Moa e Azul (região norte), e о Juruá Mirim (e seu afluente Rio Branco), Ouro Preto, das Minas, todos afluentes do Rio Juruã na sua margem esquerda (região sul). O rio Juruá é o mais importante e tem o Moa como seu principal afluente na sua ...
Mutilla frigidula Cresson, 1902 was transferred to Tobantilla by Williams et al. (2011), based on... more Mutilla frigidula Cresson, 1902 was transferred to Tobantilla by Williams et al. (2011), based on morphological similarities with females of that genus. Discovery of the male of this species indicated significant morphological differences from Tobantilla. We therefore erect the genus, Frigitilla gen. nov., for Mutilla frigidula. Herein, we describe the male of F. frigidula (Cresson, 1902), comb. nov., associate it with its host (Trypoxylon spp.), and discuss its relations to other mutillid genera. The impact of collecting method and specimen age on the integumental coloration of specimens is discussed, emphasizing the need to diagnose species on consistent structural features rather than differences in color pattern.
Male orchid bees were sampled with chemical baits from May 1996 to March 1998 in two forested are... more Male orchid bees were sampled with chemical baits from May 1996 to March 1998 in two forested areas in the state of Acre, Brazilian Amazonia. The two most used sampling methods in euglossine studies were used simultaneously: insect nets and bait traps. We collected 1,744 euglossine specimens belonging to at least 33 species. Of these, 1,221 were collected with insect
The objective of this work it was verify the abundance, richness, and the anuran composition in p... more The objective of this work it was verify the abundance, richness, and the anuran composition in plots of vegetation of different succession stages in a forest and the matrix that surrounds it, of Acre (10º04'S, 67º37'W). The sampling was carried out between August 2005 and April 2006 in twelve plots located in three different sites in the forest. In each site four kinds of environments were chosen: primary forest (wood), secondary forest (capoeira), periphery (matrix) and secondary forest (succession). A total of twenty-seven species distributed in seven families was found. Greater abundance was registered in the plots of matrix two and capoeira three and the least in succession one. The richness was greater in matrix two, with the greater number of exclusive species. The abundance of anurans correlated significantly, with the average circumference at the breast height of the trees of the plots. The richness however correlated only marginally, with this structural feature. The larger richness in plots of capoeira and matrix can be explained partially by the existence of temporary ponds and more structural heterogeneity is able constitute intermediary stages in a gradient of perturbation and this can increase the biodiversity. Thus environments with intermediary levels of disturbance are important for the conservation of the diversity of anuran amphibians.
Os rios mais importantes são o Moa e Azul (região norte), e о Juruá Mirim (e seu afluente Rio Bra... more Os rios mais importantes são o Moa e Azul (região norte), e о Juruá Mirim (e seu afluente Rio Branco), Ouro Preto, das Minas, todos afluentes do Rio Juruã na sua margem esquerda (região sul). O rio Juruá é o mais importante e tem o Moa como seu principal afluente na sua ...
Mutilla frigidula Cresson, 1902 was transferred to Tobantilla by Williams et al. (2011), based on... more Mutilla frigidula Cresson, 1902 was transferred to Tobantilla by Williams et al. (2011), based on morphological similarities with females of that genus. Discovery of the male of this species indicated significant morphological differences from Tobantilla. We therefore erect the genus, Frigitilla gen. nov., for Mutilla frigidula. Herein, we describe the male of F. frigidula (Cresson, 1902), comb. nov., associate it with its host (Trypoxylon spp.), and discuss its relations to other mutillid genera. The impact of collecting method and specimen age on the integumental coloration of specimens is discussed, emphasizing the need to diagnose species on consistent structural features rather than differences in color pattern.
Male orchid bees were sampled with chemical baits from May 1996 to March 1998 in two forested are... more Male orchid bees were sampled with chemical baits from May 1996 to March 1998 in two forested areas in the state of Acre, Brazilian Amazonia. The two most used sampling methods in euglossine studies were used simultaneously: insect nets and bait traps. We collected 1,744 euglossine specimens belonging to at least 33 species. Of these, 1,221 were collected with insect
The objective of this work it was verify the abundance, richness, and the anuran composition in p... more The objective of this work it was verify the abundance, richness, and the anuran composition in plots of vegetation of different succession stages in a forest and the matrix that surrounds it, of Acre (10º04'S, 67º37'W). The sampling was carried out between August 2005 and April 2006 in twelve plots located in three different sites in the forest. In each site four kinds of environments were chosen: primary forest (wood), secondary forest (capoeira), periphery (matrix) and secondary forest (succession). A total of twenty-seven species distributed in seven families was found. Greater abundance was registered in the plots of matrix two and capoeira three and the least in succession one. The richness was greater in matrix two, with the greater number of exclusive species. The abundance of anurans correlated significantly, with the average circumference at the breast height of the trees of the plots. The richness however correlated only marginally, with this structural feature. The larger richness in plots of capoeira and matrix can be explained partially by the existence of temporary ponds and more structural heterogeneity is able constitute intermediary stages in a gradient of perturbation and this can increase the biodiversity. Thus environments with intermediary levels of disturbance are important for the conservation of the diversity of anuran amphibians.
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