Resumo
Two new species of Pucciniales fungi on plants of the Fabid clade are described from samples deposited in the herbarium of Museu Paraense Emilio Goeldi, collected in the state of Amapá, in the Brazilian Amazon. They are Aecidium margaritariae found on Margaritaria nobilis (Phyllanthaceae), and Uromyces amapaensis on Jatropha gossypiifolia (Euphorbiaceae). The microstructures of the specimens were analyzed using optical and scanning electron microscopy. Aecidium margaritariae is characterized by the presence of globose, subglobose to slightly ellipsoid aeciospores with warty walls and smooth areas usually in the basal portion. Uromyces amapaensis is distinguished by the presence of uredinia with paraphyses which are thickened and rounded at the tip, and pedicellate and smooth teliospores. Descriptions, illustrations, and taxonomic comments are presented for each species.
Duas novas espécies de fungos Pucciniales sobre plantas do clado das fabídeas são descritas a partir de amostras depositadas no herbário do Museu Paraense Emílio Goeldi, coletadas no estado do Amapá, na Amazonia Brasileira. Aecidium margaritariae ocorrendo sobre Margaritaria nobilis (Phyllanthaceae) e Uromyces amapaensis sobre Jatropha gossypiifolia (Euphorbiaceae). As microestruturas dos espécimes foram analisadas em microscópio óptico e em microscopia eletrônica de varredura. Aecidium margaritariae se caracteriza por apresentar eciósporos globosos, subglobosos a levemente elipsoides, parede verrugosa com áreas lisas geralmente na extremidade basal. Uromyces amapaensis se diferencia por apresentar uredínios com paráfises engrossadas e arredondadas no ápice e teliósporos pedicelados, lisos. São apresentadas descrições, ilustrações e comentários taxonômicos para cada espécie.
Assuntos
Basidiomycota/classificaçãoResumo
Two new species of Pucciniales fungi on plants of the Fabid clade are described from samples deposited in the herbarium of Museu Paraense Emilio Goeldi, collected in the state of Amapá, in the Brazilian Amazon. They are Aecidium margaritariae found on Margaritaria nobilis (Phyllanthaceae), and Uromyces amapaensis on Jatropha gossypiifolia (Euphorbiaceae). The microstructures of the specimens were analyzed using optical and scanning electron microscopy. Aecidium margaritariae is characterized by the presence of globose, subglobose to slightly ellipsoid aeciospores with warty walls and smooth areas usually in the basal portion. Uromyces amapaensis is distinguished by the presence of uredinia with paraphyses which are thickened and rounded at the tip, and pedicellate and smooth teliospores. Descriptions, illustrations, and taxonomic comments are presented for each species.(AU)
Duas novas espécies de fungos Pucciniales sobre plantas do clado das fabídeas são descritas a partir de amostras depositadas no herbário do Museu Paraense Emílio Goeldi, coletadas no estado do Amapá, na Amazonia Brasileira. Aecidium margaritariae ocorrendo sobre Margaritaria nobilis (Phyllanthaceae) e Uromyces amapaensis sobre Jatropha gossypiifolia (Euphorbiaceae). As microestruturas dos espécimes foram analisadas em microscópio óptico e em microscopia eletrônica de varredura. Aecidium margaritariae se caracteriza por apresentar eciósporos globosos, subglobosos a levemente elipsoides, parede verrugosa com áreas lisas geralmente na extremidade basal. Uromyces amapaensis se diferencia por apresentar uredínios com paráfises engrossadas e arredondadas no ápice e teliósporos pedicelados, lisos. São apresentadas descrições, ilustrações e comentários taxonômicos para cada espécie.(AU)
Assuntos
Basidiomycota/classificaçãoResumo
The composition and potential hosts of mycophagous Drosophilidae from a section of the Brazilian Amazon forest in the Caxiuanã National forest were investigated. Sampling was performed in three different periods at long the wet season (January (beginning) and July (end) 2013 and May (middle) 2014). The samples were collected from existing trails by actively searching for fungal fruiting bodies where Drosophilidae were present. We present composition and richness analysis over two years of sampling sampling Drosophilidae and Fungi. We evaluate sampling completeness using asymptotic species richness estimators. Out of 159 fruiting body samples and 64 fungal species, 5,124 drosophilids belonging to 55 species and 5 genera were collected. The mycophagous Drosophilidae richness values estimated by Jackknife 1 and Bootstrap were 69 and 61, respectively. The estimated fly richness correlated positively with fungal richness and abundance. Among the Drosophilidae species identified in this study, approximately 5% represent new occurrences for Brazil and 56% represent new species. Four genera belonging to the Zygothrica genus group are found in the Amazon region, and these genera represent 80% of the fungus-associated fauna known to date for the tropics. In conclusion, our results show that the fungal richness and abundance were the factors that determined the high diversity of mycophagous Drosophilidae.
Resumo
The composition and potential hosts of mycophagous Drosophilidae from a section of the Brazilian Amazon forest in the Caxiuanã National forest were investigated. Sampling was performed in three different periods at long the wet season (January (beginning) and July (end) 2013 and May (middle) 2014). The samples were collected from existing trails by actively searching for fungal fruiting bodies where Drosophilidae were present. We present composition and richness analysis over two years of sampling sampling Drosophilidae and Fungi. We evaluate sampling completeness using asymptotic species richness estimators. Out of 159 fruiting body samples and 64 fungal species, 5,124 drosophilids belonging to 55 species and 5 genera were collected. The mycophagous Drosophilidae richness values estimated by Jackknife 1 and Bootstrap were 69 and 61, respectively. The estimated fly richness correlated positively with fungal richness and abundance. Among the Drosophilidae species identified in this study, approximately 5% represent new occurrences for Brazil and 56% represent new species. Four genera belonging to the Zygothrica genus group are found in the Amazon region, and these genera represent 80% of the fungus-associated fauna known to date for the tropics. In conclusion, our results show that the fungal richness and abundance were the factors that determined the high diversity of mycophagous Drosophilidae.(AU)
Resumo
Two Atlantic Rain Forest fragments in Minas Gerais state were studied to access their Agaricales fungal richness. A total of 187 specimens were collected and 109 species, 39 genera, and eight families were identified. Thirty-three species were cited for the first time in Brazil.