Schizotetranychus hindustanicus (Hirst, 1924) (ACARI: TETRANYCHIDAE): rotas de risco e potencial de impacto para a citricultura brasileira

• Ano de defesa: 2011
• Autor(a) principal: Fantine, Andreza Kerr
• Orientador(a): Vilela, Evaldo Ferreira
• Banca de defesa: Yamamoto, Pedro Takao , Costa, Emerson Luis Nunes
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso embargado
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Entomologia
• Departamento: Ciência entomológica; Tecnologia entomológica
• País: BR
• Palavras-chave em Português: Ácaro; Ácaro exótico; Avaliação de risco; Defesa fitossanitária; Citricultura.
• Palavras-chave em Inglês: Mite; Exotic mite; Risk assessment; Plant defense; Citrus.
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE
• Link de acesso: http://locus.ufv.br/handle/123456789/3919

The introduction of exotic mite pest of citrus, Schizotetranychus hindustanicus (Hirst) in city of Boa Vista, Roraima in 2008, poses risks to production and marketing of citrus in Brazil. Information about this mite pest is scarce, however, a risk assessment for S. hindustanicus has been drafted, as well as information collected about the biological aspects of the mite and their hosts and the damage to the definition and the establish populations in food substrates. We used an appropriates qualitative methodology to understand their potential for entry, establishment, spread and potential economic impact, to carry out the risk assessment. For the physiological tests the loss of chlorophyll, nitrogen and specific leaf area of orange ​​plants attacked were quantified. To test substrates in alternative food plants, we used acacia, Acacia mangium, and neem, (Azadirachta indica A. Juss). The effect of the S. hindustanicus feeding on orange Pear trees resulted in a loss of about 30% of chlorophyll but did not affect its nitrogen content and the specific leaf area of ​​orange trees. Acacia plants are not conducive to population growth of S. hindustanicus, while in neem plants there are the survival of active forms of the mite , reproductive activity and damaging to the leaves. Considering the risk assessment, the potential introduction of mite in other states of Brazil, infested by fruit coming from Roraima, seems to be low. However we most be attentive to the commuting ofpeople who may be potential carriers of infested plant material. However If, somehow, the mite is introduced and estabilished in states like as São Paulo, Bahia and Sergipe, the potential economic impact could be considered high, due to the damage caused of the fruit (produce) and its loss in market value, increased control cost and restrictions to nationwide markets.