In:
Insect Science, Wiley, Vol. 23, No. 2 ( 2016-04), p. 245-252
Abstract:
Plant volatiles have been demonstrated to play an important role in regulating the behavior of Cotesia plutellae , a major larval parasitoid of the diamondback moth (DBM), Plutella xylostella , but little is currently known about the function of each volatile and their mixtures. We selected 13 volatiles of the DBM host plant, a cruciferous vegetable, to study the electroantennogram (EAG) and behavioral responses of C. plutellae . EAG responses to each of the compounds generally increased with concentration. Strong EAG responses were to 100 μL/mL of trans ‐2‐hexenal, benzaldehyde, nonanal and cis ‐3‐hexenol, and 10 μL/mL of trans ‐2‐hexenal and benzaldehyde with the strongest response provoked by trans ‐2‐hexenal at 100 μL/mL. In the Y‐tube olfactometer, C. plutellae , was significantly attracted by 1 μL/mL of trans ‐2‐hexenal and benzaldehyde. β‐caryophyllene, cis ‐3‐hexenol or trans ‐2‐hexenal significantly attracted C. plutellae at 10 μL/mL, while nonanal, benzyl alcohol, cis ‐3‐hexenol or benzyl cyanide at 100 μL/mL significantly attracted C. plutellae . Trans ‐2‐hexenal significantly repelled C. plutellae at 100 μL/mL. EAG of C. plutellae showed strong responses to all mixtures made of five various compounds with mixtures 3 ( trans ‐2‐hexenal, benzaldehyde, nonanal, cis ‐3‐hexenol, benzyl cyanide, farnesene, eucalyptol) and 4 ( trans ‐2‐hexenal, benzaldehyde, benzyl alcohol, ( R )‐(+)‐limonene, β‐ionone, farnesene, eucalyptol) significantly attracting C. plutellae . These findings demonstrate that the behavior of C. plutellae can be affected either by individual compounds or mixtures of plant volatiles, suggesting a potential of using plant volatiles to improve the efficiency of this parasitoid for biocontrol of P. xylostella .
Type of Medium:
Online Resource
ISSN:
1672-9609
,
1744-7917
DOI:
10.1111/ins.2016.23.issue-2
DOI:
10.1111/1744-7917.12308
Language:
English
Publisher:
Wiley
Publication Date:
2016
detail.hit.zdb_id:
2179775-4
SSG:
12
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