Posttreatment development and fertility of nondiapausing codling moth (Lepidoptera: Tortricidae) larvae and their progeny following gamma irradiation

Nondiapausing codling moth, Cydia pomonella (L.) larvae were exposed to gamma irradiation at a rate of 14.3-15.7 Gray (GY)/min. Based on percentages of larvae that developed to pupae, adults, and physically normal adults, sensitivity to radiation increased with increasing dose and decreasing age, an...

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Bibliographic Details
Published in:Journal of economic entomology 1996-02, Vol.89 (1), p.56-62
Main Authors: Toba, H.H. (Fruit and Vegetable Insect Research, USDA, ARS, Yakima, WA.), Moffitt, H.R
Format: Article
Language:English
Subjects:
Biological and medical sciences
CONTROL DE INSECTOS
CYDIA POMONELLA
DESARROLLO BIOLOGICO
DESCENDANCE
DEVELOPPEMENT BIOLOGIQUE
FERTILIDAD
FERTILITE
Fundamental and applied biological sciences. Psychology
Invertebrates
IRRADIACION
IRRADIATION
LARVAS
LARVE
Lepidoptera
LUTTE ANTIINSECTE
Medically important nuisances and vectors, pests of stored products and materials: population survey and control
PERFORMANCE DE REPRODUCTION
Pests of stored products
PROGENIE
RADIACION GAMMA
RAYONNEMENT GAMMA
REPRODUCTIVIDAD
Tortricidae
TOXICIDAD
TOXICITE
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Summary:Nondiapausing codling moth, Cydia pomonella (L.) larvae were exposed to gamma irradiation at a rate of 14.3-15.7 Gray (GY)/min. Based on percentages of larvae that developed to pupae, adults, and physically normal adults, sensitivity to radiation increased with increasing dose and decreasing age, and females were more sensitive than males. The effect of radiation on insects is often delayed in that it occurs in developmental stages subsequent to that on which the treatment is applied. A study to determine the minimum dose required to produce detrimental effects on subsequent developmental stages showed that LD99s (95% upper confidence limit) were 233 (284) Gy to prevent pupation and 126 (147) Gy to prevent adult emergence. At 60 Gy, only infertile males developed to physically normal adults from treated larvae. Thus, an irradiation treatment that prevents surviving individuals from mating and producing fertile progeny still serves the purpose of preventing establishment of a quarantine pest. Adults of both sexes from larvae treated at 40 Gy were fertile, and single-pair reciprocal crosses of their adult progeny with untreated moths showed no evidence of delayed or F1 sterility
ISSN:0022-0493
1938-291X