Use of Ethyl (E,Z)-2,4-decadienoate in Codling Moth Management: Stimulation of Oviposition

A. L. Knight, D. M. Light


The effect of the pear volatile, ethyl (E,Z)-2,4-decadienoate (Et-E,Z-DD), on oviposition by codling moth, Cydia pomonella (L.), was evaluated in a series of choice and nochoice laboratory experiments and in subsequent field tests conducted in apple and walnut. Gray halobutyl elastomer septa loaded with 1.0 and 100.0 μg Et-E,Z-DD significantly increased the numbers of eggs laid by a laboratory population in 96 h no-choice assays by 2-fold. In addition, the number of eggs laid near the Et-E,Z-DD versus a solvent blank dispenser was significantly higher in choice bioassays across a similar range of septa loadings. Oviposition rates by a field-collected post-diapause strain of codling moth were significantly increased by the addition of a 1.0-μg septa versus a solvent blank dispenser in a no-choice bioassay. Field trials were conducted in apple and walnut to develop an artificial egg trap baited with Et-E,Z-DD to monitor codling moth oviposition. Septa loaded with 0.1 to 10.0 mg did not significantly increase oviposition versus solvent blank dispensers on a Mylar plastic collar trap or on the adjacent leaves and fruit in apple. Significantly more eggs were laid on the fruit and foliage than on the plastic collar. No eggs were deposited on non-bearing apple shoots baited with 0.1 – 40.0 mg Et-E,Z-DD septa. Similarly, no eggs were deposited on cylindrical wax paper-covered plastic traps baited with 10.0 μg to 1.0 mg Et-E,Z-DD septa in walnut orchards. The potential of Et-E,Z-DD to monitor codling moth’s oviposition in the field, stimulate oviposition by field-collected strains under laboratory conditions, and to improve pest control by disrupting host location are discussed.


Cydia pomonella; oviposition; kairomone; phenology; egg trap

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Analytical Software. 2000. Statistix7, Tallahassee, Fl.

Anet, E.F. 1969. Autoxidation of α–farnesene. Australian Journal of Chemistry 22: 2403-2410.= Coracini, M., M. Bengtsson, I. Liblikas, and P. Witzgall. 2004. Attraction of codling moth males to apple volatiles. Entomologia Experimentalis et Applicata 110: 1-10.

Elkins, R. 2002. Areawide implementation of mating disruption in pears using puffers. Pest Management Grant Final Report No. 00-0198S. California Department of Pesticide Regulation, Sacramento, CA.

Howell, J.F. 1991. Reproductive biology, pp. 157-174. In L.P.S. van der Geest and H.H. Evenhuis (eds.), Tortricid pests: their biology, natural enemies and control. Elsevier, Amsterdam, The Netherlands.

Hughes, W.O.H., D. Gailey, and J.J. Knapp. 2003. Host location by adult and larval codling moth and the potential for its disruption by the application of kairomones. Entomologia Experimentalis et Applicata 106: 147-153.

Jennings W.G., R.K. Creveling, and D.E. Heinz. 1964. Volatile esters of Bartlett pear. IV. Esters of trans:2-cis:4-decadienoic acid. Journal of Food Science 29: 730-734.

Knight, A.L. and D.L. Light. 2001. Attractants from Bartlett pear for codling moth, Cydia pomonella (L.) larvae. Naturwissenschaften 88: 339-342.

Knight, A.L., J.E. Dunley, and R.K. Jansson. 2001. Baseline monitoring of codling mot(Lepidoptera: Tortricidae) larval response to benzoylhydrazine insecticides. Journal of Economic Entomology 94:264-270.

Knight, A.L., R.P.J. Potting, and D.M. Light. 2002. Modeling the impact of a sex pheromone kairomone attracticide for management of codling moth (Cydia pomonella). Acta Horticulturae 584: 215-220.

Knight, A.L. and E. Miliczky. 2003. Influence of trap colour on the capture of codling moth (Lepidoptera: Tortricidae), honeybees, and non-target flies. Journal of the Entomological Society British Columbia 100: 65-70.

Knight, A.L., P. VanBuskirk, R.J. Hilton, B.G. Zoller, and D.M. Light. 2005. Monitoring codling moth in four pear cultivars with the pear ester. Acta Horticulturae (in press).

Light, D.M., A.L. Knight, R.G. Buttery, C.A. Henrick, D. Rajapaska, K.M. Reynolds, G. Merrill, J. Roitman, J.C. Dickens, W. Lingren, and B.C. Campbell. 2001. Ethyl (2E, 4Z)-2,4-decadienoate: a pearderived kairomone with pheromonal potency attracts both sexes of codling moth, Cydia pomonella L. Naturwissenschaften 88: 333-338.

Lombarkia, N. and S. Derridj. 2002. Incidence of apple fruit and leaf surface metabolites on Cydia pomonella oviposition. Entomologia Experimentalis et Applicata 104: 79-87.

Richardson, J.C., C.D. Jorgensen, and B.A. Croft. 1982. Embryogenesis of the codling moth, Laspeyresia pomonella: use in validating phenology models. Annals Entomological Society of America 75: 201-209.

Riedl, H. and B.A. Croft. 1974. A study of pheromone trap catches in relation to codling moth damage. The Canadian Entomologist 106: 525-537.

Riedl, H., B.A. Croft, and A.J. Howitt. 1976. Forecasting codling moth phenology based on pheromone trap catches and physiological time models. The Canadian Entomologist 108: 449-460.

Sutherland, O.R.W., R.F.N. Hutchins, and C.H. Wearing. 1974. The role of the hydrocarbon α farnesene in the behaviour of codling moth larvae and adults, pp. 249-263. In: L. Barton Browne, ed. Experimental analysis of insect behavior. Springer Verlag, Berlin.

Toba, H.H. and J.F. Howell. 1991. An improved system for mass-rearing codling moth. Journal of the Entomological Society of British Columbia 88: 22-27.

Van Leeuwen, E.R. 1947. Increasing production of codling moth eggs in an oviposition chamber. Journal of Economic Entomology 40: 744-45.

Wearing, C.H. and R.F.N. Hutchins. 1973. α-Farnesene, a naturally occurring oviposition stimulant for the codling moth, Laspeyresia pomonella. Journal of Insect Physiology 19: 1251-1256.

Zoller, B.G. 2001. Oviposition preference of codling moth between cut and uncut fruit of Bartlett, Bosc, and Beurre Hardy cultivars in the Sacramento Valley. Proceedings of the Western Orchard Pest and Disease Management Conference 75: 5-6.

Zoller, B.G. and A.M. Zoller. 2001. Biased sampling of codling moth oviposition using a cut fruit technique to monitor mating disruption in Bartlett pears. Proceedings of the Western Orchard Pest and Disease Management Conference 75: 7-8.


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