Abstract:A ocorrência de três espécies acarinas fitófagas é relatada pela primeira vez sobre folhas de Ipomoea cairica. As espécies Brevipalpus phoenicis (Geijskes), Tetranychus urticae (Koch) e Polyphagotarsonemus latus (Banks), foram coletadas sobre folhas de I. cairica nas imediações da Universidade Federal do Paraná, Curitiba, Paraná, Brasil, em 20 de janeiro de 2005.
“…1 Brevipalpus phoenicis (Geijskes, 1939) (Acari: Tenuipalpidae) is a cosmopolitan false-spider-mite which has various plants as hosts. 2,3 Under Brazilian geoclimate conditions the specie plays a pivotal role of the transmission of citrus leprosis virus (CiLV), a RNA virus responsible for citrus leprosies, mainly on sweet orange trees. 4,5 The disease negatively impacts Brazilian citrus agribusiness by an annual estimation of 100 million dollar expense in Brevipalpus spp.…”
Recebido em 26/4/12; aceito em 24/8/12; publicado na web em 25/9/12 This work reports the chemical characterization of Eremanthus goyzensis essential oil and its toxic effect over Brevipalpus phoenicis. The essential oil displayed a major composition of sesquiterpenes (61.87%) including trans-caryophillene (26.81%) and germacrene-D (13.31%). The fumigation test indicated a promising bioactivity over adult B. phoenicis individuals at 24 h (2.03 μL/L of air) and 48 h (1.08 μL/L of air) of exposition. A brief discussion of essential oils composition and their singular role on the toxic effect over B. phoenicis is provided here. Our results may contribute to a new and profitable use of a species of Brazilian flora on agribusiness.
“…1 Brevipalpus phoenicis (Geijskes, 1939) (Acari: Tenuipalpidae) is a cosmopolitan false-spider-mite which has various plants as hosts. 2,3 Under Brazilian geoclimate conditions the specie plays a pivotal role of the transmission of citrus leprosis virus (CiLV), a RNA virus responsible for citrus leprosies, mainly on sweet orange trees. 4,5 The disease negatively impacts Brazilian citrus agribusiness by an annual estimation of 100 million dollar expense in Brevipalpus spp.…”
Recebido em 26/4/12; aceito em 24/8/12; publicado na web em 25/9/12 This work reports the chemical characterization of Eremanthus goyzensis essential oil and its toxic effect over Brevipalpus phoenicis. The essential oil displayed a major composition of sesquiterpenes (61.87%) including trans-caryophillene (26.81%) and germacrene-D (13.31%). The fumigation test indicated a promising bioactivity over adult B. phoenicis individuals at 24 h (2.03 μL/L of air) and 48 h (1.08 μL/L of air) of exposition. A brief discussion of essential oils composition and their singular role on the toxic effect over B. phoenicis is provided here. Our results may contribute to a new and profitable use of a species of Brazilian flora on agribusiness.
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