Ocorrência sazonal da acarofauna em videira no município de Jales-SP e avaliação de resistência de variedades a Tetranychus urticae Koch (acari: tetranychidae)
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2010-08-17
Autores
Valadão, Gisele Santos [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
Na região noroeste do estado de São Paulo, o município de Jales é um importante produtor de uvas finas e rústicas. Até o momento, pouco se conhece sobre as comunidades de ácaros fitófagos e predadores que ocorrem naquele local, mas muitos produtores tem relatado intensas infestações do ácaro rajado, Tetranychus urticae Koch. Entre as possibilidades de comercialização das uvas produzidas está a exportação de uvas finas para os países do MERCOSUL, que não aceitam a presença do ácaro Brevipalpus californicus (Banks), considerado uma praga quarentenária para esses países. Assim, o presente trabalho teve dois objetivos: a) identificar as espécies e determinar a ocorrência sazonal dos ácaros presentes em videiras no município de Jales, SP; b) determinar se existem diferenças entre as variedades cultivadas na região, com relação ao desenvolvimento populacional de T. urticae. A acarofauna de videira foi acompanhada em dois períodos, de agosto a novembro de 2008 e de março de 2009 a fevereiro de 2010, nas variedades Itália, Rubi, Benitaka, Niagara, Centenial, Redimeire, Red Globe, Brasil e Benizue. As amostragens foram realizadas mensalmente, com coleta de folhas novas e maduras, inflorescências e cachos de uva. Em laboratório os ácaros encontrados foram montados em lâminas de microscopia, identificados e contados. Para determinar se o desenvolvimento populacional de T. urticae pode ser afetado pela variedade de uva, a biologia dessa espécie foi estudada em laboratório nas variedades Itália, Benitaka, Redimeire e Niagara, com a observação de ácaros individualizados em discos de folhas. Os dados obtidos foram utilizados para confecção de tabelas de vida de fertilidade. Os principais ácaros fitófagos registrados foram T. urticae e Polyphagotarsonemus latus (Banks) nas variedades de uvas finas. Entre...
In the northwestern region of São Paulo, the city of Jales is an important producer of the fine and rustic grapes. So far, little is known about the communities of phytophagous and predators mites that occur there, but many producers have reported heavy infestations of the two spotted spider mite, T. urticae. Among the commercialization possibilities of the grapes produced is the grapes fines export for the MERCOSUL countries, which do not accept the presence of Brevipalpus californicus (Banks), considered a quarantine pest for these countries. Thus, this study was two objectives: a) to identify the species and to determine the seasonal occurrence of the mites on grapevines in city of Jales, SP; b) to determine whether there are differences between the varieties cultivated in the region with respect to population development of T. urticae. The grapevine acarofauna was monitored in two periods, August- November 2008 and March 2009 to February 2010, on the Italia, Ruby, Benitaka, Niagara, Centennial, Redimeire, Red Globe, Brazil and Benizue varieties. Samples were taken monthly, with collection of the young and mature leaves, inflorescences and bunches of grapes. In laboratory the mites were mounted on microscope slides, identified and counted. To determine whether the population development of T. urticae can be affected by the grape variety, the biology of this species was studied in laboratory on the Italy, Benitaka, Redimeire and Niagara varieties, with the observation of mites individualized in leaf discs. The data were used for construction of life tables of fertility. T. urticae and Polyphagotarsonemus latus (Banks) were the main phytophagous mites registered in fine grapes varieties. Among the predators, Euseius citrifolius Denmark & Muma and Pronematus sp. were the most frequent species. Mites of the Tenuipalpidae family were... (Complete abstract click electronic access below)
In the northwestern region of São Paulo, the city of Jales is an important producer of the fine and rustic grapes. So far, little is known about the communities of phytophagous and predators mites that occur there, but many producers have reported heavy infestations of the two spotted spider mite, T. urticae. Among the commercialization possibilities of the grapes produced is the grapes fines export for the MERCOSUL countries, which do not accept the presence of Brevipalpus californicus (Banks), considered a quarantine pest for these countries. Thus, this study was two objectives: a) to identify the species and to determine the seasonal occurrence of the mites on grapevines in city of Jales, SP; b) to determine whether there are differences between the varieties cultivated in the region with respect to population development of T. urticae. The grapevine acarofauna was monitored in two periods, August- November 2008 and March 2009 to February 2010, on the Italia, Ruby, Benitaka, Niagara, Centennial, Redimeire, Red Globe, Brazil and Benizue varieties. Samples were taken monthly, with collection of the young and mature leaves, inflorescences and bunches of grapes. In laboratory the mites were mounted on microscope slides, identified and counted. To determine whether the population development of T. urticae can be affected by the grape variety, the biology of this species was studied in laboratory on the Italy, Benitaka, Redimeire and Niagara varieties, with the observation of mites individualized in leaf discs. The data were used for construction of life tables of fertility. T. urticae and Polyphagotarsonemus latus (Banks) were the main phytophagous mites registered in fine grapes varieties. Among the predators, Euseius citrifolius Denmark & Muma and Pronematus sp. were the most frequent species. Mites of the Tenuipalpidae family were... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Ácaro, Tabela de vida, Flutuação populacional, Vitis sp, Acari, B. phoenicis, Life table of fertility
Como citar
VALADÃO, Gisele Santos. Ocorrência sazonal da acarofauna em videira no município de Jales-SP e avaliação de resistência de variedades a Tetranychus urticae Koch (acari: tetranychidae). 2010. 85 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Engenharia de Ilha Solteira, 2010.