Atratividade de Diaphorina citri Kuwayama (Hemiptera: Liviidae) a voláteis de plantas de Canavalia ensiformis (L.) DC e Citrus sinensis (L.) Osbeck (cv. Valência)

Abstract

The citrus psyllid, Diaphorina citri Kuwayama (Hemiptera, Liviidae), an exotic insect present in Brazil for more than 60 years, is a vector of the bacterium Candidatus Liberibacter spp., Associated with huanglongbing (HLB). This island has a large losszos to the citrus orchards of the Southeast region. The knowledge about the factors that interfere in the population dynamics to outline the management strategies. The filter behavior was evaluated in an arena of choice (Pettersson). They were used between 4 and 7 days after an emergency and were fasted for 1 hour. Each bioassay was performed a data exchange and each time a round of the arena was performed at 90o. The means were compared with the normality test, Wilcoxon test t test (p <0.05). Two experiments were carried out. In the top was the expertise of the citrus plant (Citrus sinensis) individualized versus citrus plant with C. ensiformis from test for the dump trucks released. Citrus sinensis with C. ensiformis is repellent to the psilid compared to the individual Citrus sinensis, in July 2017. Between October and December 2017, the time of stay was not in the C. sinensis field. In the interval of volatiles of plant for Citrus sinensis with comparate to purity to test the repellency of the volatiles to the insect. The time of residence in the fields with pure (4.45 min) was superior to the field with volatiles of C. sinensis with C. ensiformis (1.25 min), between the months of March and April of 2019. The results were shown age of physical factors in the species of plants. The objective of this study was to evaluate the behavior of D. citri in response to voles released by citrus plants, C. sinensis (L.) Osbeck (Valencia), and C. ensiformis.