RESUMOA cultura do cafeeiro (Coffea arabica L.) na região de cerrado do Estado de Minas Gerais, mais especificamente no Alto Paranaíba, está se desenvolvendo com muito sucesso. As doenças e pragas vêm causando redução na produtividade e na qualidade do café produzido. Os ácaros fitófagos fazem parte deste problema, pois causam danos econômicos. Sendo assim, este trabalho teve como objetivo o levantamento da acarofauna em cafeeiros daquela região. Termos para indexação: Coffea arabica, Acari, Tenuipalpidae, Phytoseiidae, Tarsonemidae, Levantamento. ABSTRACTThe coffee (Coffea arabica L.) growing in Cerrado areas of Patrocínio, State of Minas Gerais, more specifically in the region of Alto Paranaíba, have been expanding with success. Coffee diseases and pests result in reduction of the productivity and quality. Phytophagous mites are among the pests that cause economic damage. Therefore, this work had as objective the study of the mite fauna on coffee plants in those areas. , and unidentified specimens of the family Acaridae and of the suborder Oribatida. This is the first report on the occurrence of T. confusus in coffee. Also, three new species of Tarsonemidae and a new genus in the family Iolinidae were found, these being kept for later description. INTRODUÇÃOMinas Gerais é o maior produtor de café no Brasil, respondendo com 60% da produção (ANUÁRIO..., 2001). Muitos estudos sobre a cultura do café são realizados principalmente no Sul de Minas. A região do cerrado mineiro, especialmente a do Alto Paranaíba, vem dominando o mercado cafeeiro. Essa região que antes foi considerada pobre para a agricultura, hoje possui lavouras empresariais, com prioridade para a mecanização e boa qualidade do café produzido. Visto a importância da cultura para a região, estudos fitossanitários são imprescindíveis, tendo em conta que este é um dos problemas que o cafeicultor enfrenta todos os anos. A incidência de pragas em maior ou menor número, ano após ano prejudica a produtividade e a qualidade do café produzido.Os ácaros fitófagos estão entre os problemas fitossanitários e são os responsáveis por uma grande parcela dos prejuízos. Existem poucos estudos a respeito dos ácaros que ocorrem em cafeeiros, não apenas no Brasil, mas em todos os países onde essa planta é cultivada (FLECHTMANN, 1967(FLECHTMANN, , 1968(FLECHTMANN, , 1985.
Neocarus proteus sp. n., is described from caves and the surrounding epigean environment of ferruginous outcrops (Cangas) in Minas Gerais, Brazil. In addition, some notes about development in this species are presented. Neocarus proteus is the only species in the genus that has smooth or barbed genital setae and that carries coronidia on the basitarsi, tibiae and genua of legs II–III. Females carry additional setae with rounded tips on the subcapitulum, and are, on average, larger than males. This distinct sexual dimorphism appears in the tritonymphal instar and is maintained in the adults.
Palavras-chave:Controle biológico, Acari, Euphorbiaceae, biodiversidade, ácaros, seringueira. Key Words: Biological control, Acari, Euphorbiaceae, biodiversity, mites, rubber tree. AbstractPatches of natural vegetation have been reported to play an important role in the preservation of diversity of natural enemies of pest arthropods. Euphorbiaceous plants are common in natural and regenerated ecosystems in the State of São Paulo. Those plants may act as reservoirs of phytophagous mites and their respective natural enemies, both of which are also found on cultivated plants of the same family. The objective of the work reported in this paper was to study the diversity of mite species on euphorbiaceous plants in three regions of the State of São Paulo, and to compare the similarities between those regions in relation to the composition of the mite fauna they harbor. A total of 31,603 mites belonging to 105 species in 74 genera and 16 families were collected. Twenty one of those species belong to families composed essentially of phytophages (Diptilomiopidae, Eriophyidae, Tenuipalpidae and Tetranychidae) and 43, to families composed essentially of predaceous organisms (Ameroseiidae, Ascidae, Cheyletidae, Cunaxidae, Eupalopsellidae, Stigmaeidae and Phytoseiidae). The remaining species belong to families composed of species with diverse or inadequately known feeding habits, which are here categorized as "generalists" (Acaridae, Eupodidae, Tarsonemidae, Tydeidae and Winterschmidtiidae). The plants considered in the study were classified in two groups according to the mite fauna they harbor. Plants of the Group 1 had on the average higher diversity, uniformity and species richness than the Group 2. The only species commonly exploited commercially that was considered in this study, the rubber tree, had high similarity with the remaining plants of the same locality in which they were found, indicating a flux of mites between the plants considered in the study. None of the most important mite pests of rubber trees was found on other euphorbiaceous plants considered in this study. The result of this study may help in the selection of prospective predaceous mites to be tested in applied biological control projects for the control of the major mite pests on rubber tree. ResumoHá muitos relatos do importante papel de remanescentes de vegetação naturais na preservação da diversidade de inimigos naturais de artrópodes pragas. Plantas da família Euphorbiaceae são comuns em ecossistemas naturais e regenerados no Estado de São Paulo. Essas plantas podem agir como reservatórios de ácaros fitófagos e seus respectivos inimigos naturais, também encontrados em plantas cultivadas da mesma família. O objetivo do presente trabalho foi estudar a diversidade de espécies de ácaros em euforbiáceas de três regiões do Estado de São Paulo, e comparar a similaridade entre essas regiões em relação à composição da fauna de ácaros que elas abrigam. Um total de 31.603 ácaros pertencentes a 105 espécies em 74 gêneros e 16 famílias foram coletados. Vi...
Ácaros Fitoseídeos (Acari) Associados à Seringueira e Outras Euforbiáceas no Sudeste do Brasil RESUMO -Em um levantamento conduzido em espécies arbóreas da família Euphorbiaceae, incluindo plantas nativas e a seringueira, em três regiões do Estado de São Paulo, vinte e cinco espécies já descritas de ácaros da família Phytoseiidae foram encontradas. Vários dos ácaros coletados eram conhecidos até o momento apenas pela descrição original. Cinco das espécies relatadas neste trabalho correspondem a novas combinações. Descrições complementares de várias das espécies coletadas são apresentadas.PALAVRAS-CHAVE: Controle biológico, predadores, Phytoseiidae, taxonomia, Euphorbiaceae.ABSTRACT -Twenty five known mite species of the family Phytoseiidae were found in a survey conducted on trees of the family Euphorbiaceae, including native plant species and rubber tree, in three regions of the State of São Paulo. Several of the species collected were known until now only from the original description. Five of the mite species mentioned in this paper correspond to new combinations. Complementary descriptions of several of the species collected are provided.
The coffee production is an economic mainstay for many countries in the world. Brazil is the world's largest producer and exporter of coffee, being responsible for about 25% of the world production. It is well known that coffee plantations are susceptible to more than 850 fungal and insect pests. Among these pests, the most important significant throughout Brazil is the coffee-leaf-miner, [Leucoptera coffeella (Guérin-Mèneville & Perrottet, 1842)
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