Abstract
The aim of this study was to investigate the behavioral response of Bemisia tabaci towards Metarhizium anisopliae (isolates PR1 and GT3) volatiles. Behavioral response of B. tabaci was investigated based on adult feeding and oviposition preference in eggplant Solanum melongena L. The highest mean number of adult (87) and egg (418) of B. tabaci were observed in the control plant, while the lowest mean number of adult (26) and egg (107) of B. tabaci were deposited in the PR1-treated plant. There were 8 and 5 compounds identified from the isolates PR1 and GT3, respectively. The highest amount of compounds of 1-Hydroxy-2-aminopropane (61.96%) and 1, 4-Dioxane-2-ol (54.18%) were released by PR1 and GT3 respectively. The results obtained so far revealed that whitefly avoided the eggplants provided with cultures of the M. anisopliae isolates emanating the volatile organic compounds and suitability largely depended upon the volatile profile.
Highlights
The sweetpotato whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), is considered as a significant pest of global agriculture which is one of the most destructive pests of many vegetable, horticultural and ornamental crops at the tropical and subtropical countries including Bangladesh (Khatun et al, 2018) in the world (Oliveria et al, 2001; Simmons et al, 2008)
Behavioral response of B. tabaci was investigated based on adult feeding and oviposition preference in eggplant
Oneway ANOVA results showed significant differences according to the honestly significant difference (HSD) test between the strains of M. anisopliae on two variables, including adult feeding (F = 437.38; df= 2, 89; P < 0.0001) and oviposition preference (F = 4487.99; df = 2, 89; P < 0.0001) of B. tabaci when compared with their respective controls (Figure 1)
Summary
The sweetpotato whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), is considered as a significant pest of global agriculture which is one of the most destructive pests of many vegetable, horticultural and ornamental crops at the tropical and subtropical countries including Bangladesh (Khatun et al, 2018) in the world (Oliveria et al, 2001; Simmons et al, 2008). This insect damages plants through direct feeding on phloem (Islam and Ren, 2009). The entomopathogenic fungi can produce a wide assortment of metabolites, some of which are important to the host-specialization of this group of fungi
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