The Pathogenicity of Bacillus thuringiensis ssp. kurstaki to γ-Irradiated Cadra cautella (Walker) (Lepidoptera: Phycitidae)

Faruki, Saiful Islam; Khan, Ataur Rahman

doi:10.1006/jipa.2000.4998

Cited by 6 publications

(4 citation statements)

References 23 publications

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“…It is known that insect weight plays an important role in the incidence of mating, longevity and consequently in fecundity (Phelan and Barker, 1986;Makee and Saour, 2000); therefore, the above described reduction in the fecundity of F 1 progeny of irradiated and nonirradiated parents could be related to the decrease in pupal weight (Table 3). Similar results were reported in Ephestia cautella Walker (Faruki and Khan, 2001) and a susceptible strain of Colorado potato beetle Leptinotarsa decemlineata Say (Whalon et al, 1993).…”

Section: Discussionsupporting

confidence: 84%

“…The combination of B. thuringiensis and irradiation would be more efficient for the control of E. cautella than their separate use (Faruki and Khan, 2001). In the present study, B. thuringiensis and IST independently reduced the reproductive rate of P. operculella.…”

Section: Discussionmentioning

confidence: 46%

“…The percentage hatchability of eggs laid by F 1 progeny of nonirradiated parents was reduced at high B. thuringiensis concentration (Table 5), as observed in E. cautella (Faruki and Khan, 2001). The percentage hatchability of eggs laid by F 1 progeny of irradiated parents was markedly lower than that of nonirradiated parents and did not change regardless of the B. thuringiensis concentration.…”

Section: Discussionmentioning

confidence: 62%

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Effect of inherited sterility and Bacillus thuringiensis on mortality and reproduction of Phthorimaea opercullela Zeller (Lepidoptera: Gelechiidae)

Makee

Tlas

Amer

et al. 2007

Appl. Entomol. Zool.

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The effect of a commercial formulation of Bacillus thuringiensis (Dipel ® 2X) upon F 1 progeny of irradiated and nonirradiated Phthorimaea operculella male parents was investigated. F 1 progeny of irradiated parents was more susceptible to B. thuringiensis than that of nonirradiated parents. A combination of irradiation and B. thuringiensis led to higher mortality in F 1 progeny of P. operculella. The LC 50 was 0.406 g/100 ml for F 1 progeny of nonirradiated parents, but 0.199 g/100 ml for those of irradiated parents. There was a great reduction in the pupal weight, fecundity and egg hatchability of F 1 progeny of irradiated parents compared to nonirradiated parents. Such reduction was increased by applying a higher concentration of B. thuringiensis. A combination of the inherited sterility technique and B. thuringiensis application gave a good control result against P. operculella.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 46%

Section: Discussionmentioning

confidence: 62%

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Effect of inherited sterility and Bacillus thuringiensis on mortality and reproduction of Phthorimaea opercullela Zeller (Lepidoptera: Gelechiidae)

Makee

Tlas

Amer

et al. 2007

Appl. Entomol. Zool.

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“…Spodoptera litura larvae from irradiated parents were 4.2 times more susceptible to the insecticide thiodicarb than larvae from untreated parents [123]. The biopesticide Bacillus thuringiensis and irradiation showed additive and synergistic effects in studies with tropical warehouse moth Cadra cautella [124].…”

Section: Combination With Pesticidesmentioning

confidence: 96%

Combination irradiation treatments for food safety and phytosanitary uses

Follett¹

2015

Stewart Postharvest Review

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Abbreviations Irradiation for food safety and preservation Several food preservation systems such as heating, refrigeration and addition of antimicrobial compounds can be used to reduce the risk of food poisoning. Current trends towards improvement in safety, quality and convenience of foods, and saving energy in food processing and distribution are increasing interest in developing new combinations of methods for food preservation. Combination of irradiation treatment with other preservative agents seems to be of potential importance in enhancing the effectiveness and reducing the energy or dose Purpose of the review: Combination of irradiation treatment with other preservation techniques is of potential importance in enhancing the effectiveness and reducing the energy or dose requirement for destroying food borne illness and spoilage organisms while retaining or improving product quality. Phytosanitary irradiation to control quarantine pests, particularly insects, in traded fresh commodities may also benefit from combination with other disinfestation techniques to enhance effectiveness, and to reduce costs, treatment time, and product damage. Main findings: Combined preservation treatments can be beneficial to eliminate pathogenic bacteria due to the synergistic or additive effect of the treatments. It also permits less extreme use of a single treatment which may protect the sensory quality of the foods. Combination with modified atmosphere packaging (MAP), refrigeration, freezing or heating has great potential for improving the quality and the safety of fresh and processed foods. Irradiation and heat treatments reduce the numbers of pathogenic bacteria and the level of normal flora, while MAP and cold suppresses the growth of the survivors during subsequent storage. The use of natural antimicrobials at concentrations that do not affect the sensory qualities can increase the relative sensitivity of bacteria by >4-fold and can reduce the radiation dose necessary to eliminate pathogens. Natural antimicrobials are normally not stable over time; microencapsulation and the use of edible coatings can improve stability of antimicrobial formulations and prolong their bioactivity. Phytosanitary irradiation doses to control insects (50 to 400 Gy) are relatively low compared to doses for food safety and sterilization applications. Lowering doses further could save money on treatment costs by reducing treatment time, increasing the capacity of irradiation facilities, and reducing any problems with commodity quality. Combining irradiation with other insect disinfestation modalities such as cold, heat, fumigation, modified atmospheres, and chemical insecticides is a possible means to reduce the radiation dose, and the duration, level, or concentration of the companion treatment while meeting the technical objectives of the quarantine treatment. Irradiation in combination with cold is particularly promising, as it may be a means to reduce the duration and therefore costs of current cold treatment protocols. Irradiation may al...

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2017

Irradiation for Quality Improvement, Microbial Safety and Phytosanitation of Fresh Produce

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The Pathogenicity of Bacillus thuringiensis ssp. kurstaki to γ-Irradiated Cadra cautella (Walker) (Lepidoptera: Phycitidae)

Cited by 6 publications

References 23 publications

Effect of inherited sterility and Bacillus thuringiensis on mortality and reproduction of Phthorimaea opercullela Zeller (Lepidoptera: Gelechiidae)

Effect of inherited sterility and Bacillus thuringiensis on mortality and reproduction of Phthorimaea opercullela Zeller (Lepidoptera: Gelechiidae)

Combination irradiation treatments for food safety and phytosanitary uses

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