Oviposition by sterile codling moths, Cydia pomonella (Lepidoptera: Tortricidae) and control of wild populations with combined releases of sterile moths and egg parasitoids
Abstract
This paper provides data on the number of nonviable Cydia pomonella (L.) eggs that are present in orchards receiving sterile moths and the potential for these eggs to support populations of the parasitoid Trichogramma platneri Nagarkatti. In the laboratory, non-irradiated female codling moths laid ca. 214 eggs in their lifetime while females irradiated with 330 Gy laid only 93 eggs. Persistence data collected in the field indicated that the majority of nonviable eggs were no longer suitable for parasitization after 1 week. With a release rate of 1,000 sterile females per hectare per week we estimated that 30,000-40,000 nonviable eggs per hectare would be present in orchards at any given time. When a combination of sterile moths and parasitoids were released into large field-cages fruit damage was less than seen when either tactic was used alone.
Key words: Cydia pomonella; sterile insect release; oviposition; biological control; parasitoid
Downloads
Issue
Section
License
Authors who publish with the Journal of the Entomological Society of British Columbia agree to the following terms:
-Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
-Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
-Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
