scholarly journals Effects of gamma radiation and Bacillus thuringiensis on F1 progeny of Cydia pomonella

2021 ◽  
Vol 14 (2) ◽  
pp. 99-107
Author(s):  
I. Idris ◽  
K. Hussian
Keyword(s):  
Bacillus Thuringiensis ◽  
Gamma Radiation ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Management Program ◽  
Fruit Crops ◽  
Egg Hatchability ◽  
F1 Progeny ◽  
Two Factors ◽  
Inherited Sterility

Summary The codling moth [Cydia pomonella L. (Lepidoptera: Tortricidae)] is the main pest in most apple orchards in Syria. It causes billions of dollars in loss of fruit crops every year. The present work examined the effects of gamma radiation and Bacillus thuringiensis (BT) on F1 progeny of C. pomonella. The experimental design was based on two factors, namely F1 offspring produced by males irradiated at a dose of 150 Gy, and artificial diet of BT-treated larvae. The first offspring of unirradiated and irradiated C. pomonella males, F1, were from parents treated with a commercial formulation of Bacillus thuringiensis BT (Dipel® 2X). F1 progeny of unirradiated was significantly less susceptible to BT than that of irradiated parents. The results showed high mortality in F1 progeny of C. pomonella when gamma radiation and BT were applied together. The LC50 in F1 progeny was 2.5 ppm for irradiated parents, while it was 13 ppm for unirradiated ones. A significant reduction in the fecundity and egg hatchability of F1 progeny of irradiated parents compared to unirradiated ones was observed. This study demonstrated that for F1 progeny the combination between Inherited Sterility Technique and BT can be useful to achieve an integrated pest management program of codling moth.

scholarly journals Insecticidal Activity ofBacillus thuringiensisStrains Isolated from Soil and Water

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Edyta Konecka ◽  
Jakub Baranek ◽  
Anita Hrycak ◽  
Adam Kaznowski
Keyword(s):  
Bacillus Thuringiensis ◽  
Water Sample ◽  
Insecticidal Activity ◽  
Plant Protection ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Gene Identification ◽  
Potential Utility ◽  
Pcr Method ◽  
Soil And Water

We attempted to search novelBacillus thuringiensisstrains that produce crystals with potential utility in plant protection and with higher activity than strains already used in biopesticide production. SevenB. thuringiensissoil and water isolates were used in the research. We predicted the toxicity of their crystals bycrygene identification employing PCR method. The isolate MPU B63 with interesting, according to us, genes content was used in evaluating its crystal toxicity againstCydia pomonellacaterpillars. The strain MPU B63 was cultured from water sample and hadcry1Ab,cry1B, andcry15genes. The LC50crystals of MPU B63 were compared to LC50of commercial bioinsecticide Foray determined againstC. pomonella(codling moth). The activity of MPU B63 inclusions against codling moth larvae was approximately 24-fold higher than that of Foray. The results are a promising introduction for further study evaluating the potential usefulness of isolate MPU B63 crystals in plant protection.

The Crystal Proteins from Bacillus thuringiensis subsp. thompsoni Display a Synergistic Activity Against the Codling Moth, Cydia pomonella

2000 ◽  
Vol 40 (3) ◽  
pp. 200-204 ◽  
Author(s):  
Cécile Rang ◽  
Lawrence A. Lacey ◽  
Roger Frutos
Keyword(s):  
Bacillus Thuringiensis ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Synergistic Activity ◽  
Crystal Proteins ◽  
Bacillus Thuringiensis Subsp

Activity of Bacillus thuringiensis δ-endotoxins against codling moth (Cydia pomonella L.) larvae

2006 ◽  
Vol 92 (2) ◽  
pp. 96-99 ◽  
Author(s):  
Rumyana Boncheva ◽  
Stefan Dukiandjiev ◽  
Ivan Minkov ◽  
Ruud A. de Maagd ◽  
Samir Naimov
Keyword(s):  
Bacillus Thuringiensis ◽  
Cydia Pomonella ◽  
Codling Moth

Effects of gamma radiation on codling moth, Cydia pomonella (L.), eggs

2004 ◽  
Vol 71 (6) ◽  
pp. 1125-1128 ◽  
Author(s):  
M. Mansour ◽  
F. Mohamad
Keyword(s):  
Gamma Radiation ◽  
Cydia Pomonella ◽  
Codling Moth

The results of field trials of the codling moth pheromone preparations in 2020

2020 ◽  
Author(s):  
S.V. Dmitriyeva ◽  
◽  
I.M. Mityushev
Keyword(s):  
Russian Federation ◽  
Central Region ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Field Trials ◽  
Field Screening ◽  
Tube Type ◽  
The Russian Federation ◽  
Polyethylene Dispenser

This article presents the results of field screening of pheromone preparations of the codling moth, Cydia pomonella L., conducted in 2020 under conditions of the Central Region of the Russian Federation. The new «Tube» type dispensers were tested vs. standard foil-polyethylene dispenser.

Development of Bacillus thuringiensis in Galleria mellonella larvae exposed to gamma radiation

1974 ◽  
Vol 23 (1) ◽  
pp. 76-84 ◽  
Author(s):  
R.H. Jafri ◽  
H. Sabiha
Keyword(s):  
Bacillus Thuringiensis ◽  
Gamma Radiation ◽  
Galleria Mellonella

scholarly journals Will Peri-Urban Cydia pomonella (Lepidoptera: Tortricidae) Challenge Local Eradication?

Insects ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 207 ◽  
Author(s):  
Rachael Horner ◽  
Georgia Paterson ◽  
James T.S. Walker ◽  
George L.W. Perry ◽  
Rodelyn Jaksons ◽  
...  
Keyword(s):  
New Zealand ◽  
Spatial Interpolation ◽  
Spatial Clustering ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Catch Rate ◽  
Trap Catch ◽  
Urban Populations ◽  
Host Trees ◽  
The City

Codling moth, Cydia pomonella (Lepidoptera: Tortricidae), is a phytosanitary pest of New Zealand’s export apples. The sterile insect technique supplements other controls in an eradication attempt at an isolated group of orchards in Hawke’s Bay, New Zealand. There has been no attempt in New Zealand to characterize potential sources of uncontrolled peri-urban populations, which we predicted to be larger than in managed orchards. We installed 200 pheromone traps across Hastings city, which averaged 0.32 moths/trap/week. We also mapped host trees around the pilot eradication orchards and installed 28 traps in rural Ongaonga, which averaged 0.59 moths/trap/week. In Hastings, traps in host trees caught significantly more males than traps in non-host trees, and spatial interpolation showed evidence of spatial clustering. Traps in orchards operating the most stringent codling moth management averaged half the catch rate of Hastings peri-urban traps. Orchards with less rigorous moth control had a 5-fold higher trap catch rate. We conclude that peri-urban populations are significant and ubiquitous, and that special measures to reduce pest prevalence are needed to achieve area-wide suppression and reduce the risk of immigration into export orchards. Because the location of all host trees in Hastings is not known, it could be more cost-effectively assumed that hosts are ubiquitous across the city and the area treated accordingly.

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