Determination of Sterile-Insect Competitiveness

Fried, Maurice

doi:10.1093/jee/64.4.869

Cited by 185 publications

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“…but in fact there was no significant difference between dose rates at eighter of the 2 doses. The competitiveness values were calculated as proposed by Fried ( 1971). Males irradiated with 9 krad were significantly less competitive than males irradiated with 7 krad.…”

Section: Resultsmentioning

confidence: 99%

STERILIZATION OF DACUS CUCUMIS FRENCH (DIPTERA: TEPHRITIDAE) BY GAMMA RADIATION. II. EFFECT OF DOSE RATE ON STERILITY AND COMPETITIVENESS OF ADULT MALES

Hooper

1975

Australian Journal of Entomology

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Newly emerged adult males ofDacus cucumis were irradiated with 1 , 3 and 5 krad of gamma radiation at dose rates of 9.51. 4.38, 2.98 and 0.87 krad/min. There was no significant effect of dose rate on sterility or longevity. When males were irradiated with 7 or 9 krad at rates of either 9.51 or 0.87 krad/min there was no significant effect of dose rate on competitiveness of the males. A dose of 9 krad gave significantly less competitive males than did a dose of 7 krad.

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Section: Resultsmentioning

confidence: 99%

STERILIZATION OF DACUS CUCUMIS FRENCH (DIPTERA: TEPHRITIDAE) BY GAMMA RADIATION. II. EFFECT OF DOSE RATE ON STERILITY AND COMPETITIVENESS OF ADULT MALES

Hooper

1975

Australian Journal of Entomology

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“…The value of 1 indicates an equivalent level of competitiveness between the irradiated and the wild males; values close to 0 indicate overwhelmingly superior competitiveness of the wild male (Fried 1971). The C value of litchi stem-borer males irradiated with 250 Gy using different TM:UM mating ratios in laboratory cages fluctuated between 0.53 and 0.62, whereas the mean C value of males irradiated with 250 Gy in field cages was 0.48.…”

Section: Fig 1 Fecundity Of P Generationmentioning

confidence: 99%

Mating Competitiveness of Male <I>Anopheles arabiensis</I> Mosquitoes Irradiated with a Partially or Fully Sterilizing Dose in Small and Large Laboratory Cages

Helinski

Knols

2008

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“…We did not use a dose of 90 Gy because this dose of gamma radiation significantly affected quality of insects during preliminary bioassay. In the mating trials percent egg hatch (observed egg hatch -EH o ) was evaluated as above and for the trials (iii) and (iv) expected egg hatch (EH e ) was calculated using an equation by Fried (1971) The total competitiveness value (CV ) for treated males was calculated according to Fried's equation (Fried 1971): plastic tubes (dead flies and non-emerged pupae) were evaluated. The flight ability was based on a number of flies escaping from the black tube.…”

Section: Emergence Of Adults and Sex Ratio Determinationmentioning

confidence: 99%

Effect of gamma radiation on the male sterility and other quality parameters of peach fruit fly, Bactrocera zonata (Saunders) (Diptera: Tephritidae)

Mahmoud¹,

Barta²

2011

Hort. Sci. (Prague)

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Mahmoud M.F., Barta M., 2011. Effect of gamma radiation on the male sterility and other quality parameters of peach fruit fly, Bactrocera zonata (Saunders) (Diptera: Tephritidae). Hort. Sci. (Prague), 38: 54-62.Bactrocera zonata, a serious pest of fruits in many parts of the world, has recently been recorded in Northern Africa. Even though it has not been introduced to the European continent yet, a strong emphasis is being placed on developing effective measures to suppress this pest and to prevent it from establishing in neighbouring European countries. The sterile insect technique is widely used in integrated programmes against tephritid fruit flies and, in this paper, quality parameters of irradiated B. zonata were evaluated for possible use of sterile insect technique within the management of this pest. Pupae were irradiated ( 60 Co) 48 h before adult emergence (in an air atmosphere) with doses of 10, 30, 50, 70 or 90 Gy. While adult emergence and egg hatch decreased with increasing dose, no significant differences in female fecundity were found among doses. Exposure of pupae to 90 Gy resulted in a total sterility of eggs laid by non-treated females crossed with treated males. Only insignificant difference in the radiation effect on female fecundity was found. Moderate effects on sex ratio and size were recorded, as they decreased gradually by increasing doses. No considerable effect on flying capability was observed, but generally, the percentage of fliers decreased with increasing radiation doses. Fried's competitiveness values of treated males (30 and 70 Gy) suggest that irradiated males compete successfully with non-irradiated ones.

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Determination of Sterile-Insect Competitiveness

Cited by 185 publications

References 0 publications

STERILIZATION OF DACUS CUCUMIS FRENCH (DIPTERA: TEPHRITIDAE) BY GAMMA RADIATION. II. EFFECT OF DOSE RATE ON STERILITY AND COMPETITIVENESS OF ADULT MALES

STERILIZATION OF DACUS CUCUMIS FRENCH (DIPTERA: TEPHRITIDAE) BY GAMMA RADIATION. II. EFFECT OF DOSE RATE ON STERILITY AND COMPETITIVENESS OF ADULT MALES

Mating Competitiveness of Male <I>Anopheles arabiensis</I> Mosquitoes Irradiated with a Partially or Fully Sterilizing Dose in Small and Large Laboratory Cages

Effect of gamma radiation on the male sterility and other quality parameters of peach fruit fly, Bactrocera zonata (Saunders) (Diptera: Tephritidae)

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