Abstract
Recent fears of terrorism provoked an increase in delays and denials of transboundary shipments of radioisotopes. This represents a serious constraint to sterile insect technique (SIT) programs around the world as they rely on the use of ionizing energy from radioisotopes for insect sterilization. In order to validate a novel Xray irradiator, a series of studies on Ceratitis capitata (Wiedemann) and Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) were carried out, comparing the relative biological effectiveness (RBE) between X-rays and traditional gamma radiation from {sup 60}Co. Male C. capitata pupae and pupae of both sexes of A. fraterculus, both 24 to 48 h before adult emergence, were irradiated with doses ranging from 15 to 120 Gy and 10 to 70 Gy respectively. Estimated mean doses of 91.2 Gy of X and 124.9 Gy of gamma radiation induced 99% sterility in C. capitata males. Irradiated A. fraterculus were 99% sterile at about 40-60 Gy for both radiation treatments. Standard quality control parameters were not significantly affected by the two types of radiation. There were no significant differences between X and gamma radiation regarding mating indices. The RBE did not differ significantly between the tested X and gamma radiation, and X-rays are as biologically
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Mastrangelo, Thiago;
Walder, Julio M.M., E-mail: piaui@cena.usp.b;
[1]
Parker, Andrew G;
Jessup, Andrew;
Orozco-Davila, Dina;
Islam, Amirul;
Dammalage, Thilakasiri;
[2]
Pereira, Rui
[3]
- Centro de Energia Nuclear na Agricultura (CENA), Piracicaba, SP (Brazil)
- Joint FAO/IAEA-UN A-2444, Seibersdorf (Austria). Insect Pest Control Subprogramme
- Joint FAO/IAEA-UN, Vienna (Austria). Insect Pest Control Subprogramme
Citation Formats
Mastrangelo, Thiago, Walder, Julio M.M., E-mail: piaui@cena.usp.b, Parker, Andrew G, Jessup, Andrew, Orozco-Davila, Dina, Islam, Amirul, Dammalage, Thilakasiri, and Pereira, Rui.
Assessment of differences between X and gamma rays in order to validate a new generation of irradiators for insect sterilization.
Brazil: N. p.,
2009.
Web.
Mastrangelo, Thiago, Walder, Julio M.M., E-mail: piaui@cena.usp.b, Parker, Andrew G, Jessup, Andrew, Orozco-Davila, Dina, Islam, Amirul, Dammalage, Thilakasiri, & Pereira, Rui.
Assessment of differences between X and gamma rays in order to validate a new generation of irradiators for insect sterilization.
Brazil.
Mastrangelo, Thiago, Walder, Julio M.M., E-mail: piaui@cena.usp.b, Parker, Andrew G, Jessup, Andrew, Orozco-Davila, Dina, Islam, Amirul, Dammalage, Thilakasiri, and Pereira, Rui.
2009.
"Assessment of differences between X and gamma rays in order to validate a new generation of irradiators for insect sterilization."
Brazil.
@misc{etde_21385249,
title = {Assessment of differences between X and gamma rays in order to validate a new generation of irradiators for insect sterilization}
author = {Mastrangelo, Thiago, Walder, Julio M.M., E-mail: piaui@cena.usp.b, Parker, Andrew G, Jessup, Andrew, Orozco-Davila, Dina, Islam, Amirul, Dammalage, Thilakasiri, and Pereira, Rui}
abstractNote = {Recent fears of terrorism provoked an increase in delays and denials of transboundary shipments of radioisotopes. This represents a serious constraint to sterile insect technique (SIT) programs around the world as they rely on the use of ionizing energy from radioisotopes for insect sterilization. In order to validate a novel Xray irradiator, a series of studies on Ceratitis capitata (Wiedemann) and Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) were carried out, comparing the relative biological effectiveness (RBE) between X-rays and traditional gamma radiation from {sup 60}Co. Male C. capitata pupae and pupae of both sexes of A. fraterculus, both 24 to 48 h before adult emergence, were irradiated with doses ranging from 15 to 120 Gy and 10 to 70 Gy respectively. Estimated mean doses of 91.2 Gy of X and 124.9 Gy of gamma radiation induced 99% sterility in C. capitata males. Irradiated A. fraterculus were 99% sterile at about 40-60 Gy for both radiation treatments. Standard quality control parameters were not significantly affected by the two types of radiation. There were no significant differences between X and gamma radiation regarding mating indices. The RBE did not differ significantly between the tested X and gamma radiation, and X-rays are as biologically effective for SIT purposes as gamma rays are. This work confirms the suitability of this new generation of X-ray irradiators for pest control programs in UN Member States. (author)}
place = {Brazil}
year = {2009}
month = {Jul}
}
title = {Assessment of differences between X and gamma rays in order to validate a new generation of irradiators for insect sterilization}
author = {Mastrangelo, Thiago, Walder, Julio M.M., E-mail: piaui@cena.usp.b, Parker, Andrew G, Jessup, Andrew, Orozco-Davila, Dina, Islam, Amirul, Dammalage, Thilakasiri, and Pereira, Rui}
abstractNote = {Recent fears of terrorism provoked an increase in delays and denials of transboundary shipments of radioisotopes. This represents a serious constraint to sterile insect technique (SIT) programs around the world as they rely on the use of ionizing energy from radioisotopes for insect sterilization. In order to validate a novel Xray irradiator, a series of studies on Ceratitis capitata (Wiedemann) and Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) were carried out, comparing the relative biological effectiveness (RBE) between X-rays and traditional gamma radiation from {sup 60}Co. Male C. capitata pupae and pupae of both sexes of A. fraterculus, both 24 to 48 h before adult emergence, were irradiated with doses ranging from 15 to 120 Gy and 10 to 70 Gy respectively. Estimated mean doses of 91.2 Gy of X and 124.9 Gy of gamma radiation induced 99% sterility in C. capitata males. Irradiated A. fraterculus were 99% sterile at about 40-60 Gy for both radiation treatments. Standard quality control parameters were not significantly affected by the two types of radiation. There were no significant differences between X and gamma radiation regarding mating indices. The RBE did not differ significantly between the tested X and gamma radiation, and X-rays are as biologically effective for SIT purposes as gamma rays are. This work confirms the suitability of this new generation of X-ray irradiators for pest control programs in UN Member States. (author)}
place = {Brazil}
year = {2009}
month = {Jul}
}