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S. Bloem, J. Carpenter, H. Hofmeyr (2007)
Area-Wide Control Tactics for the False Codling Moth Thaumatotibia leucotreta in South Africa: a Potential Invasive Species
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Suppression of the Codling Moth Cydia pomonella in British Columbia, Canada Using an Area-Wide Integrated Approach with an SIT Components
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Inherited sterility in codling moth: effect of substerilizing doses of radiation on insect fecundity, fertility and controlAnn. Entomol. Soc. Am., 92
Codling moth Cydia pomonella (Linnaeus) (Lepidoptera: Tortricidae) is the key pest of pome fruit in South Africa, and it’s control in apple and pear orchards relies on the application of insecticides and pheromone‐mediated mating disruption. Development of resistance to insecticides and placement of restrictions on the use of certain insecticides has made control of codling moth in South Africa increasingly problematic. The use of the sterile insect technique (SIT) as a control tactic for codling moth is under investigation as a potential addition to the current control strategy. We investigated the radiosensitivity of a laboratory strain of codling moth that was established from moths collected from commercial and organic orchards in the Western Cape, South Africa. Fecundity and fertility of this strain following radiation were consistent with values for the codling moth strain in the Canadian rearing facility in British Columbia. For both strains, the female codling moth was considerably more radiosensitive than the male. At a radiation dose of 100 Gy or higher, treated females were 100% sterile. The fertility of the South African strain was higher (86.3%) than for the Canadian strain (71.9%). This difference in fertility between the two strains was maintained when the dose of radiation was 100 Gy. However, the level of fertility was very similar between the two strains for doses ≥150 Gy. Therefore, based upon previously published work and the data from this study, an operational dose of 150 Gy is recommended for future codling moth SIT programmes in South Africa.
Journal of Applied Entomology – Wiley
Published: Apr 1, 2010
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