Evaluation of the synergistic effect of gamma irradiated Steinernema scapterisci and soil depth in controlling Bactrocera zonata Saunders (Diptera: Tephritidae)

Sayed, R. M.; Zahran, N. F.; Hamza, Ali F.

doi:10.1016/j.jrras.2017.10.003

Cited by 3 publications

(2 citation statements)

References 13 publications

(8 reference statements)

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“…Salem et al (2014) concluded that gamma irradiated (2Gy) S. carpocapsae may attribute as a major control method of G. mellonella. Sayed and Shairra (2017) and Sayed et al (2018) stated that 2Gy irradiated S. carpocapsae was more pathogenic than non-irradiated one against S. littoralis larvae. In addition, Sayed et al (2018) suggested that 2 Gy irradiated S. scapterisci can serve as a bio-control method for controlling B. zonata.…”

Section: Resultsmentioning

confidence: 99%

“…Sayed and Shairra (2017) and Sayed et al (2018) stated that 2Gy irradiated S. carpocapsae was more pathogenic than non-irradiated one against S. littoralis larvae. In addition, Sayed et al (2018) suggested that 2 Gy irradiated S. scapterisci can serve as a bio-control method for controlling B. zonata. That increase in the pathogenicity may regard to that low doses of gamma radiation activate the symbiotic bacteria to multiply more which increase their toxins.…”

Section: Resultsmentioning

confidence: 99%

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Control of Culex pipiens (Diptera: Culicidae), the vector of lymphatic filariasis, using irradiated and non-irradiated entomopathogenic nematode, Steinernema scapterisci (Rhabditida: Steinernematidae)

Sayed

Abdalla

Rizk

et al. 2018

Egypt J Biol Pest Control

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The goal of this work was to investigate the effect of gamma irradiated entomopathogenic nematode EPN; Steinernema scapterisci on third and fourth larval instars of Culex pipiens under laboratory conditions and its effect on the elemental composition of the treated larvae. Results showed that normal and irradiated tested nematodes differed in their efficacies against third and fourth larval instars. The mortality rates increased with increasing the nematode concentration and the period after treatment, in most cases the mortality in fourth instar larvae was more than in third instar larvae under the same treatments, and the percentage of mortality in irradiated nematodes was more than that in unirradiated ones. Studying the elemental composition showed that phosphorus (P) was the highest concentration in untreated larvae or those treated with normal S. scapterisci, while calcium (Ca) was the highest concentration in gamma irradiated S. scapterisci. The lowest concentration in untreated larvae was zinc (Zn), while copper (Cu) was the lowest concentration in unirradiated and 2 Gy gamma irradiated S. scapterisci. In conclusion, the gamma irradiation of S. scapterisci enhanced its efficacy against C. pipiens, therefore it could serve as safe control method for C. pipiens.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Control of Culex pipiens (Diptera: Culicidae), the vector of lymphatic filariasis, using irradiated and non-irradiated entomopathogenic nematode, Steinernema scapterisci (Rhabditida: Steinernematidae)

Sayed

Abdalla

Rizk

et al. 2018

Egypt J Biol Pest Control

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Early detection of Bactrocera zonata infestation in peach fruit using remote sensing technique and application of nematodes for its control

Heikal,

Rady,

Merdan

et al. 2024

Kuwait Journal of Science

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Susceptibility of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), larvae to un-irradiated and gamma-irradiated entomopathogenic nematodes

Sayed

Ibrahim

El-Gepaly

2022

Egypt J Biol Pest Control

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Background The fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) is an endemic destructive pest for several cultivars in America and recently in Africa and Asia. Due to the development of pesticide resistance as well as environmental contamination, chemical control of the fall armyworm is ineffective. Alternatively, entomopathogenic nematodes (EPNs) provide a successful biological control tool sustainably. This study was designed to estimate the virulence of 2 isolates (Steinernema carpocapsae (All) and Heterorhabditis bacteriophora (HP88)) on 3rd and 5th larval instars of FAW under laboratory conditions. As well, the effect of gamma radiation (with 2 Gy) on the nematodes’ pathogenicity was studied. Results The results revealed that S. frugiperda larvae were sensitive to the 2 tested nematodes which were more apparent to S. carpocapsae. The mortality rates presented a significant elevation with the increase in un-irradiated and irradiated nematode concentrations. The highest recorded mortality for the 3rd and 5th larval instars was 100% after 3 and 4 days of treatment at concentration (80 IJs/ml) irradiated S. carpocapsae and the recorded death rate for un-irradiated S. carpocapsae was 72.2 and 77.8% for the two treated larval instars, respectively, after 4 days of the treatment with the same concentration. However, H. bacteriophora caused mortality of 88.9 and 61.1% at irradiated concentration (80 IJs/ml) and 66.7 and 50% at un-irradiated concentration (80 IJs/ml) for the 3rd and 5th larval instars, respectively, after 6 days of treatment. Based on the LC50 values, the 3rd instar larvae was more susceptible than the 5th instar larvae. In addition, juveniles’ irradiation increased their virulence. Conclusions Laboratory studies indicated that S. carpocapsae had a high potency among S. frugiperda larvae, especially the irradiated juveniles. Therefore, they have the potential to be developed as a biological control agent for S. frugiperda after further field studies.

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Evaluation of the synergistic effect of gamma irradiated Steinernema scapterisci and soil depth in controlling Bactrocera zonata Saunders (Diptera: Tephritidae)

Cited by 3 publications

References 13 publications

Control of Culex pipiens (Diptera: Culicidae), the vector of lymphatic filariasis, using irradiated and non-irradiated entomopathogenic nematode, Steinernema scapterisci (Rhabditida: Steinernematidae)

Control of Culex pipiens (Diptera: Culicidae), the vector of lymphatic filariasis, using irradiated and non-irradiated entomopathogenic nematode, Steinernema scapterisci (Rhabditida: Steinernematidae)

Early detection of Bactrocera zonata infestation in peach fruit using remote sensing technique and application of nematodes for its control

Susceptibility of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), larvae to un-irradiated and gamma-irradiated entomopathogenic nematodes

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