attraction of bucephalogonia xanthophis (hemiptera: cicadellidae) to volatiles of its natural host vernonia condensata (asteraceae) atratividade de bucephalogonia xanthophis (cicadellidae) por voláteis de seu hospedeiro atural vernonia condensata (asteraceae)

Clicks: 210
ID: 190819
2008
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Abstract
Plant volatiles are important cues for the orientation of herbivorous insects. It is possible that these compounds indicate whether the plant is suitable for feeding and larval development, or for mating aggregation. Vernonia condensata (Asteraceae) is known to attract species of leafhoppers, most of them important vectors of the citrus variegated chlorosis (CVC). In this study, we evaluated the role of volatiles of V. condensata on the orientation of Bucephalogonia xanthophis (Hemiptera: Cicadellidae). Four-arm olfactometer bioassays showed that only males were attracted to the volatiles of the host-plants Citrus sp. and V. condensata. Furthermore, fresh leaves of V. condensata induced a stronger response than volatiles from hexane-extracted leaves. This study opens the possibility to utilize V. condensata volatiles for pest management programs of B. xanthopis.
Os voláteis de plantas são sinais importantes para a orientação de insetos herbívoros. É possível que esses compostos indiquem que a planta é apropriada para alimentação e desenvolvimento larval, ou para agrupamento reprodutivo. Vernonia condensata (Asteraceae) atrai espécies de cigarrinhas, muitas delas vetores da clorose variegada dos citros (CVC). Neste trabalho, foi avaliado o papel dos voláteis de V. condensata na orientação de Bucephalogonia xanthophis (Hemiptera: Cicadellidae). Bioensaios em olfatômetro de quatro braços mostraram que somente os machos foram atraídos pelos voláteis das plantas hospedeiras Citrus sp. e V. condensata, sendo que os voláteis das folhas frescas de V. condensata induziram uma maior resposta quando comparada aos extratos hexânicos da planta. A possibilidade de usar os voláteis de V. condensata abre novas perspectivas para programas e alternativas para o manejo de pragas.
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Authors ;José Maurício Simões Bento;Alberto Arab;Giuliano Grici Zacarin;André Gustavo Corrêa Signoretti;José Wilson Pereira da Silva
Journal journal of the iranian chemical society
Year 2008
DOI
10.1590/S0103-90162008000600010
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000600010
Keywords
leafhopper trichomesagriculture (general) plant-herbivore interaction

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