Sensitivity of Sweetpotato Weevil (Coleoptera: Curculionidae) to Gamma Radiation

  title={Sensitivity of Sweetpotato Weevil (Coleoptera: Curculionidae) to Gamma Radiation},
  author={M. A. Dawes and R. S. Saini and M. Mullen and J. Brower and P. A. Loretan},
  journal={Journal of Economic Entomology},
Effects of gamma radiation on the sweetpotato weevil, Cylas formicarius elegantulus (Summers), were studied. Depending on stage of the weevil, doses of 5, 10, 20, 35, 50, 75, and 100 krad were used. Eggs irradiated at 5–20 krad were unable to develop to the larval stage at any treatment level. Twelve-day-old larvae were unable to develop to the pupal stage when irradiated at > 5 krad and no adults emerged at any treatment level between 5 and 50 krad. When 5-day-old pupae were irradiated, no… Expand
Effect of population density of Cylas formicarius (Fabricius) (Coleoptera: Brentidae) on the progeny populations
Adults of the sweet potato weevil, Cylas formicarius, were allowed to lay eggs on a 150 g tuberous root of sweet potato for 3 days under conditions of 27°C, 60% RH, and 14L:10D. The number of progenyExpand
The Potential of Irradiation as a Postharvest Disinfestation Treatment Against Phlyctinus callosus (Coleoptera: Curculionidae)
Results from both seasons indicated that irradiation did not affect fecundity but fertility was significantly affected, decreasing as irradiation doses increased, and a dose lower than the current generic dose, approved for irradiation disinfestation treatments, would control P. callosus should they occur in packed export fruit. Expand
Prolongation of the effective copulation period by fractionated‐dose irradiation in the sweet potato weevil, Cylas formicarius
Evaluated the effect of fractionated‐dose irradiation on fertility, longevity, and mating propensity in Cylas formicarius (Summers) (Coleoptera: Brentidae) for 16 days after irradiation, and demonstrated that fractionated- dose irradiation can be highly advantageous in C. formiarius eradication programs. Expand
Market quality of sweetpotatoes after gamma-irradiation for weevil control
Roots of sweetpotatoes [Ipomoea batatas (L.) Lam.] were treated with 200 to 1000 Gy of ionizing radiation from a 60 Co source. Within this range, radiation dosage had no effect on surface injury andExpand
Irradiation as a Methyl Bromide Alternative for Postharvest Control of Omphisa anastomosalis (Lepidoptera: Pyralidae) and Euscepes postfasciatus and Cylas formicarius elegantulus (Coleoptera: Curculionidae) in Sweet Potatoes
  • P. Follett
  • Biology, Medicine
  • Journal of economic entomology
  • 2006
Iradiation studies conducted with three sweet potato, Ipomoea batatas (L.) Lam. Expand
Effects of Irradiation Dose on Sperm Production, Insemination, and Male Mating Possible Period in the Sweetpotato Weevil (Coleoptera: Brentidae)
It is concluded that weekly release of sweetpotato weevil sterilized with high dose, achieving complete sterilization, could be useful for eradication program after reducing the population by male annihilation method. Expand
The pathogenicity of Bacillus thuringiensis ssp. kurstaki to gamma-irradiated Cadra cautella (Walker) (Lepidoptera: Phycitidae).
It was observed that irradiation-pathogen combinations produced additive to synergistic effects on C. cautella. Expand
Efficiency of the sterile insect release method as an eradication measure for the sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae) in the field
A small scale experiment to eradicate the sweet potato weevil by the sterile weevil release method from 1994 to 1996 suggested the necessity of a denser release of sterile weevils for successful eradication. Expand
Compositional and Sensory Analyses of Sweetpotatoes after X-ray Irradiation Quarantine Treatment
Sweetpotato (Ipomoea batatas (L.) Lam.) roots of two Hawaii-grown clones were treated with 100 to 600 Gy X-ray irradiation and evaluated for quality before and after cooking. Root moisture content,Expand
Irradiation of Insects: Disinfestation
Unlike other disinfestation techniques, irradiation does not need to kill the pests to provide quarantine security; therefore, live, but sterile, insects may occur with the exported commodity, making inspection for the target pests redundant as a confirmation of treatment application and efficacy. Expand