Success of Grapholita molesta (Busck) reared on the diet used for Cydia pomonella L. (Lepidoptera: Tortricidae) sterile insect release


  • Brittany Chubb
  • Caroline Whitehouse
  • Gary Judd
  • Maya Evenden University of Alberta


Lepidoptera, Sterile Insect Release, Tree Fruits,


The survival of Grapholita molesta (Busck) on the synthetic diet currently used by the Okanagan Sterile Insect Release Programme in British Columbia to rear Cydia pomonella L. was compared to that on a synthetic diet normally used to rear G. molesta and crab apples as a control.  Development of G. molesta on the three diets was followed from egg to adult.  The fitness of the resulting moths was compared using metrics of survival to pupation and pupal weight, survival to adulthood and female fecundity.  More G. molesta reached the pupal stage and had a significantly greater pupal mass when reared on the G. molesta diet than on the C. pomonella or crab apple diets.  There was no difference among the number of moths surviving to adulthood on any of the diet types. Although pupal mass was affected by larval diet, G. molesta females had a statistically similar number of offspring regardless of the diet they were reared on as larvae.  Grapholita molesta can be reared on the diet currently used to mass rear C. pomonella for sterile insect release but may require a period of adaptation to the novel food source.  If G. molesta becomes established in the Okanagan Valley of British Columbia, a similar sterile insect release approach to that currently used against C. pomonella may be a feasible approach.


Baker, T. C., R. Nishida, and W. L. Roelofs. 1981. Close range attraction of female Oriental fruit moths to herbal scent of male hair pencils. Science 214: 1359–1361.

Bellutti, N. 2011. Effects of mass rearing on life-history traits of an invasive fruit moth species, Grapholita molesta (Busck). M.S. thesis. Vienna. Swiss Federal Institute of Technology, Zurich.

Bloem, S., A. McCluskey, R. Fugger, S. Arthur, S. Wood, and J. Carpenter. 2007. Suppression of the codling moth Cydia pomonella in British Columbia, Canada using an area-wide integrated approach with an SIT component, pp. 591–601. In M. J. B. Vreysen, A. S. Robinson, and J. Hendrichs (eds.), Area-Wide Control of Insect Pests: From Research to field Implementation. Springer, Vienna, Austria.

Brinton, F. E., M. D. Proverbs, and B. E. Carty. 1969. Artificial diet for mass production of the codling moth Carpocapsa pomonella (Lepidoptera: Olethreutidae). The Canadian Entomologist 101: 577–584.

Calkins, C. O., and T. R. Ashley. 1989. The impact of poor quality of mass-reared Mediterranean fruit flies on the sterile insect technique used for eradication. Journal of Applied Entomology 108: 401–408.

Cohen, A. C. 2004. Insect diets: science and technology. CRC Press, Boca Raton, FL.

Dustan, G. G. 1960. The Oriental fruit moth Grapholita molesta (Busck) (Lepidoptera: Oletheutidae) in Ontario. Proceedings of the Entomological Society of Ontario 91: 215–227.

Dyck, V. A., S. H. Graham, and K. A. Bloem. 1993. Implementation of the sterile insect release programme to eradicate the codling moth, Cydia pomonella (L.) (Lepidoptera: Olethreutidae), in British Columbia, Canada, pp. 285–297. In IAEA Management of Insect Pests: Nuclear, and Related Molecular Technique, Vienna, 1992. SM-327/29.

Genchev, N. 2002. Suppression of oriental fruit moth (Grapholita molesta, Lepidoptera: Tortricidae) populations using sterile insect technique, pp. 49–59. In: Evaluation of Lepidoptera population suppression by radiation induced sterility. Proceedings of a final Research Co-ordination Meeting organized by the Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture and held in Penang, Malaysia, 28 May–2 June 1998. IAEA-TECDOC-1283. IAEA, Vienna, Austria, 2002.

Gu, H., and W. Danthanaraya. 1992. Influence of larval rearing conditions on the body size and flight capacity of Epiphyas postvittana moths. Australian Journal of Zoology 40: 573–581.

Hughes, J., A. Hern, and S. Dorn. 2004. Preimaginal environment influences adult flight in Cydia molesta (Lepidoptera: Tortricidae). Environmental Entomology 33: 1155–1162.

Judd, G. J. R., and M. G. T. Gardiner. 2005. Towards eradication of codling moth in British Columbia by complimentary actions of mating disruption, tree banding and sterile insect technique: five-year study in organic orchards. Crop Protection 24: 718–733.

Kowalski, W. 2009. Ultraviolet Germicidal Handbook. UVGI for air and surface disinfection. Springer, New York. Lofstedt, C., N. J. Vickers, W. L. Roelofs, and T. C. Baker. 1989. Diet related courtship success in the oriental fruit moth, Grapholitha molesta (Busck) (Lepidoptera: Tortricidae). Oikos 55: 402–408.

Meyers, C. T. 2005. Orchard host plant effects on the survival, development, reproduction, and behavior of the Oriental fruit moth, Grapholita molesta (Busck). Ph.D. dissertation, Pennsylvania State University, University Park, PA.

Meyers, C. T., L. A. Hull, and G. Krawczyk. 2006a. Early-season host plant fruit impacts on reproductive parameters of the Oriental fruit moth (Lepidoptera: Tortricidae). Journal of Entomological Science 41: 65–74.

Meyers, C. T., L. A. Hull, and G. Krawczyk. 2006b. Comparative survival rates of Oriental fruit moth (Lepidoptera: Tortricidae) larvae on shoots and fruit of apple and peach. Journal of Economic Entomology 99: 1299–1309.

Notter-Hausman, C., and S. Dorn. 2010. Relationship between behaviour and physiology in an invasive pest species: Oviposition site selection and temperature-dependant development of the Oriental fruit moth (Lepidoptera: Tortricidae). Environmental Entomology 39: 561–569.

Nylin, S., P. Wickman, and C. Wiklund. 2008. Seasonal plasticity in growth and development of the speckled wood butterfly, Pararge aegeria (Satyrinae). Biological Journal of the Linnean Society 38: 155–171.

R Core Team. 2012. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria.

Roehrich, R. 1961. Contribution à l'étude écologique des populations de la tordeuse du pécher (Grapholitha molesta Busck) dans la région Aquitaine. Annales des Epiphyties, Serie C. 12: 114.

Rothschild, G. H. L. and R. A. Vickers. 1991. Biology, ecology and control of the Oriental fruit moth, pp. 389–412. In L. P. S. Van der Geest and H. H. Evenhuis (eds), World crop pest: Tortricid pests, Vol. 5. Elsevier Science Publishers B.V., Amsterdam.

Shorey, A. H., and R. L. Hale. 1965. Mass-rearing of the larvae of nine noctuid species on a simple artificial medium. Journal of Economic Entomology 58: 522–524.

Solovchenko, A., and M. Schmitz-Eiberger. 2003. Significance of skin flavonoids for UV-B-Protection in apple fruits. Journal of Experimental Biology 54: 1977–1984.

Tammaru, T., T. Esperk, and I. Castellanos. 2002. No evidence for costs of being large in females of Orgyia spp. (Lepidoptera, Lymantriidae): larger is always better. Oecologia 133: 430–438.

Van Steenwyk, R. A., C. F. Fouche, and T. R. Collier. 2004. Seasonal susceptibility of ‘Bartlett’ pears to codling moth (Lepidoptera: Tortricidae) infestation and notes in diapause induction. Journal of Economic Entomology 97: 976–980.

Vetter, R.S., R.M. Espositio, and T.C. Baker. 1989. Mass rearing of the Oriental fruit moth (Lepidoptera: Tortricidae). Journal of Economic Entomology 82: 1829–1829.

Yokoyama, V. Y., G. T. Miller, and J. M. Harvey. 1987. Development of Oriental fruit moth (Lepidoptera: Tortricidae) on a laboratory diet. Journal of Economic Entomology 80: 272–276.