Volatile compounds released by disturbed and calm adults of the tarnished plant bug, Lygus lineolaris
In: Journal of chemical ecology, Jg. 29 (2003), Heft 4, S. 931-944
Online
academicJournal
- print, 2 p.1/4
Zugriff:
Volatile compounds released by disturbed and calm female and male Lygus lineolaris were collected and analyzed. Six major compounds were present in samples from disturbed bugs and from calm females: (E)-2-hexenal, 1-hexanol, (E)-2-hexenol, hexyl butyrate, (E)-2-hexenyl butyrate, and (E)-2,4-oxohexenal. (E)-2-hexenal was lacking in volatiles collected from calm males. Hexyl butyrate accounted for approximately 68% and 66% of volatiles released by agitated and calm females, and 87% and 88% of volatiles released by agitated and calm males, respectively. Blends released by disturbed insects differed quantitatively from blends released by calm insects, with amounts of compounds increasing 75-350 times in samples from disturbed insects. In static air bioassays, both females and males were repelled by natural volatiles collected from females and by five-component [(E)-2,4-oxohexenal excluded] and six-component synthetic blends at doses of 1 and 10 bug-hours, indicating that these volatiles may serve an alarm or epideictic function, as well as a possible role as defensive allomones. Adults also avoided hexyl butyrate, (E)-2-hexenyl butyrate, (E)-2-hexenol, and (E)-2,4-oxohexenal, but not 1-hexanol and (E)-2-hexenal when compounds were assayed individually in static air bioassays at doses equal to I bug-hour. When tested over 1 day in two-choice cage trials, adults did not prefer untreated bean plants over bean plants surrounded by vials releasing up to 8.1 mg/hr (=234 bug-hours) of the five-component synthetic blend. Therefore, the volatiles produced by disturbed adults would not be useful as a repellent for L. lineolaris.
Titel: |
Volatile compounds released by disturbed and calm adults of the tarnished plant bug, Lygus lineolaris
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Autor/in / Beteiligte Person: | WARDLE, A. R ; BORDEN, J. H ; PIERCE, H. D ; GRIES, R |
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Zeitschrift: | Journal of chemical ecology, Jg. 29 (2003), Heft 4, S. 931-944 |
Veröffentlichung: | New York, NY: Springer, 2003 |
Medientyp: | academicJournal |
Umfang: | print, 2 p.1/4 |
ISSN: | 0098-0331 (print) |
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