Journal ArticleDOI
Inherited sterility in codling moth (Lepidoptera : Tortricidae) : Effect of substerilizing doses of radiation on field competitiveness
TLDR
In mating table experiments, successful matings decreased as the dose of radiation increased, and Untreated males were the most competitive among released codling moths.Abstract:
Environ. Entomol. 28(4): 669-674 (1999) In release-recapture tests conducted in apple orchards in Oroville, WA, a significant relationship was found between the dose of gamma radiation used to treat adult male codling moths, Cydia pomonella (L.), and the number of males recaptured in virgin female-baited sticky traps. Males treated with 100 Gy responded to calling virgin females in larger percentages than those treated with 200 and 250 Gy. However, the percentage of untreated (released) males captured was lower than the percentage of 100 Gy-treated males captured; a possible explanation for this is that untreated males were moving farther away and were less likely to be near the female-baited traps for recapture. Recapture was highest at days 4 and 5 after release, and significantly more males of all treatments were recaptured when dusk temperatures were at or above 16°C. Radiation also had a negative impact on codling moth mating competitiveness in the field. In mating table experiments, successful matings decreased as the dose of radiation increased. Untreated males were the most competitive among released codling moths.read more
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Book ChapterDOI
Sterile Insect Technique
Jorge Hendrichs,Alan S. Robinson +1 more
TL;DR: Technical progress in behavioral ecology, mass rearing, strain improvement, global information, positioning and monitoring systems, and aerial release, combined with economies of scale and a growing demand for pest-free and low-pesticide agricultural products in local and international trade, have increased the use of SIT in AW-IPM programs.
Book ChapterDOI
Sterile Insect Quality
C. O. Calkins,A. G. Parker +1 more
TL;DR: Regular implementation of field or field-cage tests under semi-natural conditions, where sterile males have to compete with wild males for wild females, is required to provide the ultimate assurance that the sterile insects have the ability to fulfil their mission after release.
Book ChapterDOI
Sterilizing Insects with Ionizing Radiation
A. Bakri,K. Mehta,D. R. Lance +2 more
TL;DR: Insect irradiation is safe and reliable when established safety and quality-assurance guidelines are followed, but the key processing parameter is absorbed dose, which must be tightly controlled to ensure that treated insects are sufficiently sterile in their reproductive cells and yet able to compete for mates with wild insects.
Book ChapterDOI
Inherited Sterility in Insects
TL;DR: F1 sterile progeny produced in the field enhance the efficacy of released partially sterile males, and improve compatibility with other pest control strategies, and can be used to increase the production of natural enemies, and to study the potential host and geographical ranges of exotic lepidopteran pests.
Journal ArticleDOI
Codling moth cytogenetics: karyotype, chromosomal location of rDNA, and molecular differentiation of sex chromosomes.
TL;DR: The demonstrated ways of W chromosome identification will facilitate the development of genetic sexing strains desirable for pest control using the sterile insect technique.
References
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Journal ArticleDOI
Possibilities of Insect Control or Eradication Through the Use of Sexually Sterile Males
TL;DR: The principles involved in controlling insects by releasing sexually sterile males among the existing natural population will be described and the potentialities as well as the limitations of the method will be discussed.
Journal ArticleDOI
Monitoring the Quality of Laboratory-Reared Insects: A Biological and Behavioral Perspective
TL;DR: The possible sources and types of variation in these traits, the means by which the variations have been measured, and the ways in which the experimental processes have been reduced to simple monitoring systems are discussed in this review.
Journal ArticleDOI
Inherited sterility in codling moth (Lepidoptera: Tortricidae): effect of substerilizing doses of radiation on insect fecundity, fertility, and control.
TL;DR: Male and female codling moths, Cydia pomonella, were treated with increasing doses of gamma radiation, and the moths were either inbred or outcrossed with fertile counterparts, shifting the F1 sex ratio shifted in favor of male progeny.