ISSN:
1573-1561
Keywords:
Onion fly
;
Delia antiqua
;
Diptera
;
Anthomyiidae
;
Erwinia carotovora varcarotovora
;
Klebsiella pneumoniae
;
food attractant
;
ovipositional stimulant
;
dipropyl disulfide
;
2-phenylethanol
;
pentanoic acid
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract Decomposing onions at certain microbial successional stages produce potent volatile attractants and ovipositional stimulants of the onion fly,Delia antiqua (Diptera: Anthomyiidae). A reproducible source of these compounds was obtained by culturingErwinia carotovora var.carotovora (EC) on sterile onion tissue. In laboratory choice tests, EC-inoculated onion was more attractive thanKlebsiella pneumoniae (KP) cultured on onion, EC cultured on potato (a nonhost of onion fly), or the chemical synthetic baits dipropyl disulfide and an aqueous solution of 2-phenylethanol and pentanoic acid. Onion flies were mildly attracted to potato after inoculation with EC, but females did not accept EC-inoculated potato for oviposition. This work emphasizes that sources of semiochemicals may need to be defined microbiologically as well as physically and chemically.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01015186
