Some aspects of inheritance of tolerance to methyl bromide by Sitophilus granarius (L.)

Upitis, E.; Monro, H. A. U.; Bond, E.J.

doi:10.1016/0022-474x(73)90033-7

Cited by 11 publications

(6 citation statements)

References 4 publications

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“…With methyl bromide the resistance ratios were less than 2.0 (table 4) and the slope (b) was always steep (table 3), indicating 'vigour tolerance' rather than resistance (Hoskins & Gordon, 1956). Selection of adult S. granarius with methyl bromide on 50 occasions in 69 generations, produced resistance in adults of only 4.9 and 4.6 at LDJO and LD,,, respectively (Upitis et al, 1973). For the immature stages of S. granarius, the estimated tolerance ratio was less than 2 at LD^ and LD,, and was lowest for eggs.…”

Section: Discussionmentioning

confidence: 98%

Selection for resistance to phosphine or methyl bromide in Tribolium castaneum (Coleoptera: Tenebrionidae)

Rajendran

1992

Bull. Entomol. Res.

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The build-up of resistance to phosphine and methyl bromide in the developmental stages of Tribolium castaneum (Herbst) after six selections in successive generations was investigated in the laboratory at 25 ± 1°C. Responses of the life stages of the fumigant-selected insects were compared with those of untreated controls with a 24 h exposure and mortality was assessed after 14 days. Phosphine induced the development of resistance irrespective of the life stage chosen for selection. The onset of phosphine resistance was noted after the first selection but the levels of resistance attained in the different stages varied depending on the stage tested, and in each case the degree of expression was different in the four stages of T. castaneum. After selection, phosphine resistance was highest in the pupae followed by eggs, adults and larvae. Resistance to methyl bromide in the methyl bromide treated insects increased only slightly (less than × 2.0). Adults derived from egg, larva, pupa and adult-selected methyl bromide lines showed cross-resistance to phosphine (× 1.8 to 11.5 at LD95), while cross-resistance of adults to methyl bromide was noted only in adult-selected phosphine-resistant insects (× 1.5 at LD95).

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Section: Discussionmentioning

confidence: 98%

Selection for resistance to phosphine or methyl bromide in Tribolium castaneum (Coleoptera: Tenebrionidae)

Rajendran

1992

Bull. Entomol. Res.

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“…Thus, showing a kind of physiological selectivity which takes place due to variations in the mode of action leading to variability in type of toxic materials, its concentrations and its response. Also the role of genetic factor in elucidating difference in responses and reactions should be considered (Upitis et al, 1973;Arnaud et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

Insecticidal Properties of Some Plant Extracts against Rust-Red Flour Beetle, Tribolium castaneum H.

El-Araby

El-Sebae

Farahat

2014

Journal of Applied Plant Protection

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“…So that it is offering a kind of physiological selectivity which occurred due to difference in type of mode of action showing a variability in type of toxic materials, its concentrations and its response. Also the role of genetic factor in elucidating difference in responses and reactions (Upitis et al, 1973;Arnaud et al, 2005) In conclusion, and by focusing on the nature and body composition of the tested insect, Rynolds (1987) reported that the insect cuticle is a layered structure and the functions of the cuticle that are most vulnerable to insecticidal action are mechanical .These properties of the cuticle stiffness, strength, and hardness are largely due to the major part of the cuticle thickness. Cuticle is a composite material, made of proteins, lipids, phenolics and tannins.…”

Section: Discussionmentioning

confidence: 99%

Insecticidal Properties of some Plant Extracts against Granary Weevil, Sitophilus granarius L.

El-Araby

El-Sebae

Farahat

2014

Journal of Applied Plant Protection

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Laboratory experiment was conducted under controlled conditions to test the insecticidal activity of aqueous and organic extract of different solvents (ethanol, acetone and hexane) of three plants collected from north-Sinai (Tree tobacco, Nicotiana glauca G.; Chinaberry, Melia azedarach L. and Lemon, Citrus limon L.) against the adult stage of Granary Weevil, Sitophilus granarius L. The results showed that the aqueous extract of C. limon gave the highest toxicity among the other tested plants with LD50 equal to 0.0013 x 10 5 ppm using ethanol solvent. However, the organic extracts of M. azedarach L. showed the best result with LD50 equal to 0.00056 x 10 5 ppm. On the other hand, both the aqueous and organic extracts of N. glauca gave the highest toxicity with LD50's of 0.0056 x 10 5 ppm and 0.00086 x 10 5 ppm, respectively, with acetone solvent. But by using hexane solvent, aqueous extract of N. glauca was obviously the most superior in toxicity compared to the aqueous extracts of the tested plants with LD50 (0.0017 x 10 5 ppm) and in the organic phase M. azedarach had the best result with LD50 equal to 0.00017 x 10 5 ppm .

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Some aspects of inheritance of tolerance to methyl bromide by Sitophilus granarius (L.)

Cited by 11 publications

References 4 publications

Selection for resistance to phosphine or methyl bromide in Tribolium castaneum (Coleoptera: Tenebrionidae)

Selection for resistance to phosphine or methyl bromide in Tribolium castaneum (Coleoptera: Tenebrionidae)

Insecticidal Properties of Some Plant Extracts against Rust-Red Flour Beetle, Tribolium castaneum H.

Insecticidal Properties of some Plant Extracts against Granary Weevil, Sitophilus granarius L.

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