Efficacy of gamma irradiation against Sitophilus granarius (L.) (Coleoptera: Curculionidae)

Aldryhim, Yousif; Adam, E. E.

doi:10.1016/s0022-474x(99)00007-7

Cited by 55 publications

(19 citation statements)

References 6 publications

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“…Some research demonstrates that, although radiotolerance may increase as an insect develops, old adults may be more susceptible than young adults (e.g., Aldryhim and Adam 1999), indicating that actively reproducing adults should be used in phytosanitary research and not adults past their prime reproductive age.…”

Section: Phytosanitary Irradiation Variablesmentioning

confidence: 99%

Factors Affecting Ionizing Radiation Phytosanitary Treatments, and Implications for Research and Generic Treatments

Hallman¹,

Levang-Brilz²,

Zettler³

et al. 2010

jnl. econ. entom.

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Phytosanitary irradiation (PI) treatments are promising measures to overcome quarantine barriers to trade and are currently used in several countries. Although PI has advantages compared with other treatments one disadvantage bedevils research, approval, and application: organisms may remain alive after importation. Although this does not preclude their use as a phytosanitary treatment, it does leave the treatment without an independent verification of efficacy and places a greater burden for assuring quarantine security on the research supporting the treatment. This article analyses several factors that have been hypothesized to affect PI efficacy: low oxygen, pest stage, host, dose rate, and temperature. Of these factors, the first is known to affect efficacy, whereas host and dose rate probably need more research. The International Plant Protection Convention considered several PI treatments for its international standard on phytosanitary treatments and did not approve some at first because of perceived problems with the research or the presence of live adults after irradiation. Based on these concerns recommendations for research and dealing with the issue of live adults postirradiation are given. Generic PI treatments are suggested.

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Section: Phytosanitary Irradiation Variablesmentioning

confidence: 99%

Factors Affecting Ionizing Radiation Phytosanitary Treatments, and Implications for Research and Generic Treatments

Hallman¹,

Levang-Brilz²,

Zettler³

et al. 2010

jnl. econ. entom.

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“…An effective dose for the mango pulp weevil, Sternochetus frigidus F. is close to 165 Gy (Hallman 2012). Stored-product pest weevil species belonging to the genus Sitophilus require up to 100 Gy for sterility (Franco et al 1997, Aldryhim andAdam 1999). Results from the current study indicate that radiation-induced sterilization of P. callosus adults at 80 Gy supports the development of irradiation as a disinfestation treatment for this species, as well as the Curculionidae as a group, at a dosage as low as 165 Gy.…”

Section: Discussionmentioning

confidence: 99%

The Potential of Irradiation as a Postharvest Disinfestation Treatment Against <I>Phlyctinus callosus</I> (Coleoptera: Curculionidae)

Düvenhage

Johnson

2014

jnl. econ. entom.

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Phlyctinus callosus (Boheman) (Coleoptera: Curculionidae) is a pest of major phytosanitary concern for some of South Africa's biggest export markets such as the United States and Europe because this pest does not occur there. At present, fumigation with methyl bromide is the only postharvest disinfestation treatment against this pest; therefore, sustainable alternatives are needed. One such alternative is irradiation treatment of whole pallets of packed fruit to sterilize insects that may be present within the cartons. Wild adult P. callosus weevils were treated with 5, 10, 20, 40, and 80 Gy of gamma-irradiation and then cross mated to breed with either treated or nontreated adults of the opposite sex. Fecundity and fertility were monitored and recorded. Trials were conducted during the 2009-2010 and 2010-2011 fruit harvesting seasons. The results from both seasons indicated that irradiation did not affect fecundity but fertility was significantly affected, decreasing as irradiation doses increased. Egg hatch was zero for mating crosses that involved females weevils treated with a dose of 80 Gy gamma-irradiation. Probit analysis indicated that in the first season, the estimated LD95 for crosses involving treated males and treated females was 30 Gy, while in the second season it was 49.5 Gy. Respective estimated LD99S were 47.9 and 169.4 Gy. Ultimately, a dose lower than the current generic dose of 400 Gy, approved for irradiation disinfestation treatments, would control P. callosus should they occur in packed export fruit.

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“…Gamma irradiation is one of the effective processing technologies used in rice industry, because of its ability to control the infestation [6,7]. The application of gamma irradiation treatment to control insects that causing deterioration in rice has been reported by several authors [8,9]. However, irradiation has been shown to cause some physiochemical changes in rice grains.…”

Section: Introductionmentioning

confidence: 99%

Effect of Gamma Irradiation on Physicochemical Properties of Brown Rice

Mir

Bosco

Shah

et al. 2015

International Journal of Food Engineering

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Brown rice was exposed to 60 Co source at 0, 2, 4, 6, 8 or 10 kGy doses and the effect of gamma irradiation treatment on physicochemical properties were investigated. L* value of brown rice was decreased with increase of irradiation dose, whereas a* and b* values increased. The results showed the decrease of kernel hardness, amylose content and pasting properties considerably with irradiation treatment. A-type diffraction pattern was observed in non-irradiated and irradiated rice samples and crystallinity was decreased with irradiation dose. Raman spectrometry showed the decrease of Raman band intensity at higher irradiation doses. Thermal properties of rice samples were decreased slightly after irradiation treatment. Pearson's correlation studies revealed that irradiation dose was positively correlated with b* value and negatively correlated with amylose content and pasting properties.

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Efficacy of gamma irradiation against Sitophilus granarius (L.) (Coleoptera: Curculionidae)

Cited by 55 publications

References 6 publications

Factors Affecting Ionizing Radiation Phytosanitary Treatments, and Implications for Research and Generic Treatments

Factors Affecting Ionizing Radiation Phytosanitary Treatments, and Implications for Research and Generic Treatments

The Potential of Irradiation as a Postharvest Disinfestation Treatment Against <I>Phlyctinus callosus</I> (Coleoptera: Curculionidae)

Effect of Gamma Irradiation on Physicochemical Properties of Brown Rice

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