Abstract

Nineteen host plant volatiles (HPVs) were screened for attractivity to adult codling moth Cydia pomonella (L.) as a fourth component of core blends (3K) including (E,Z)-2,4-ethyl decadienoate, (E)-4,8-dimethyl-1,3,7-nonatriene and acetic acid. Each new quaternary combination was compared with a previously reported attractive bisexual lure (4K), consisting of the 3K blend plus 6-ethenyl-2,2,6-trimethyloxan-3-ol (pyranoid linalool oxide, pyrLOX). All lure evaluations were conducted in apple, Malus domestica (Borkhausen). Several compounds were found to significantly lower total and/or female catches when added to the 3K blend, including (Z)-3-hexenol, (E)-2-hexanal and hexyl butanoate (female and total moths), and (Z)-3-hexenyl acetate and linalool (female moths). Other compounds when added to the 3K blend did not increase or decrease moth catches, including methyl salicylate, (E)-beta-ocimene, limonene, beta-caryophyllene, butyl hexanoate, farnesol, terpineol, terpinen-4-ol and alpha-pinene. A few added compounds significantly increased moth catches compared with the 3K blend, including beta-pinene (male moths), (Z)-jasmone (male and total moths), (E)-beta-farnesene and beta-myrcene (female and total moths), and (E,E)-alpha-farnesene (male, female, and total moths). In addition, each of these five compounds when added to the 3K core blend performed similarly to the 4K lure (male, females, and total moths). Further studies should expand these results through tests of these and other new blends with a range of component ratios and total loading amounts. Field trials should also be replicated within all host crops of codling moth and across major geographical production regions.

Keywords

acetic acid; codling moth; kairomones; linalool oxide; nonatriene; pear ester

Published in

Journal of Applied Entomology
2021, Volume: 145, number: 8, pages: 822-830
Publisher: WILEY

SLU Authors

• Larsson Herrera, Sebastian

  • Department of Plant Protection Biology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Zoology


Publication identifier

DOI: https://doi.org/10.1111/jen.12898

Permanent link to this page (URI)

https://res.slu.se/id/publ/112008