Lethal and Inhibitory Activities of Plant-Derived Essential Oils Against Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) Biotype B in Tomato

Autor(es)

Fanela, T. L. M. ^[1] ; Baldin, E. L. L. ^[1] ; Pannuti, L. E. R. ^[1] ; Cruz, P. L. ^[1] ; Crotti, A. E. M. ^[2] ; Takeara, R. ^[3] ; Kato, M. J. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Fac Ciencias Agron, Depto Protecao Vegetal, BR-18610307 Botucatu, SP - Brazil

^[2] Univ Sao Paulo, Fac Filosofia Ciencias & Letras, Dept Quim, BR-14049 Ribeirao Preto - Brazil

^[3] Univ Fed Amazonas, Inst Cincias Exatas & Tecnol, Itacoatiara, AM - Brazil

^[4] Univ Sao Paulo, Inst Quim, Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Neotropical Entomology; v. 45, n. 2, p. 201-210, APR 2016.
• Citações Web of Science: 2

Resumo

The silverleaf whitefly Bemisia tabaci (Genn.) biotype B (Hemiptera: Aleyrodidae) is one of the most severe tomato pests in the world. The damage caused by this insect may compromise up to 100% of crop production, and management of this pest has relied on spraying of synthetic insecticides. However, due to the environmental issues associated with this practice, alternative methods such as the use of botanical pesticides are now used as a strategy of integrated pest management (IPM). We evaluated the effects of essential oils of five plant species on B. tabaci biotype B in tomato and demonstrate that the essential oils (0.5%) of Piper callosum (PC-EO), Adenocalymma alliaceum (AA-EO), Pelargonium graveolens (PG-EO), and Plectranthus neochilus (PN-EO) inhibit the settlement and oviposition of B. tabaci biotype B adults in tomato plants. In fumigation tests, A. alliaceum (AA-EO) at 0.4 mu L/L of air after 72 h and 0.1 mu L/L of air after 6 h was the most effective against nymphs and adults of B. tabaci biotype B, respectively. The major chemical constituents of PC-EO were identified as being safrole (29.3%), alpha-pinene (19.2%), and beta-pinene (14.3%), whereas diallyl trisulfide (66.9%) and diallyl disulfide (23.3%) were the major compounds identified in AA-EO. This is the first report on the reduction of oviposition by the use of P. callosum (PC-EO) and A. alliaceum (AA-EO). In addition, the fumigant effect of A. alliaceum (AA-EO) on nymphs and adults has also been reported here for the first time. (AU)

• Processo FAPESP: 07/50688-8 - Avaliacao da bioatividade de extratos vegetais sobre bermisia tabaci (genn.) biotipo b em tomateiro.
• Beneficiário: Edson Luiz Lopes Baldin
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 07/54241-8 - Prospecção de óleos essenciais de espécies brasileiras cultiváveis com atividade contra patógenos da cavidade bucal
• Beneficiário: Antônio Eduardo Miller Crotti
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Jovens Pesquisadores