Induced tolerance of stored‐product beetles to methyl bromide

Monro, H. A. U.; Musgrave, A.; Upitis, E.

doi:10.1111/j.1744-7348.1961.tb03626.x

Cited by 18 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Adults of methyl bromide-tolerant lines, particularly those derived from eggs and larvae, showed crossresistance to phosphine (table 5) whereas phosphineselected adults (except those selected as adults) did not show any clear cross-resistance to methyl bromide. Laboratory selected methyl bromide-resistant adults of S. granarius (x 5.5) were found to be cross-resistant to some fumigants, including phosphine (x 5.9 at LD^,) (Monro et al, 1961). Depending on the selection line, there were variations in cross-tolerance of methyl bromide-selected and phosphine-selected pupae of T. castaneum, to phosphine and methyl bromide, respectively (Anon., 1981).…”

Section: Stage Of Selectionmentioning

confidence: 99%

“…and Sitophilus spp. to develop resistance to fumigants as well as to enriched carbon dioxide atmospheres was reviewed by Champ (1985), and demonstrated in a number of laboratory selection investigations from those by Monro et al (1961) to others by Navarro et al (1985). These studies showed that the resistant insects were cross-resistant to other fumigants, and in some cases also to contact insecticides (Monro et al, 1972;Attia, 1984).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Rajendran

1992

Bull. Entomol. Res.

View full text Add to dashboard Cite

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).

show abstract

Section: Stage Of Selectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Rajendran

1992

Bull. Entomol. Res.

View full text Add to dashboard Cite

show abstract

“…The dosage in milligrams per liter is lower for quart than for pint Mason jars and is comparable t o the LDbO of 3.5 mg/l obtained for the GGA strain by Monro et al (1961). The larger fumigant dosages required in quart Mason jars had smaller percentage errors and therefore quart Mason jars were used in all subsequent experiments.…”

Section: Factors Which Infeuence Resultsmentioning

confidence: 96%

“…strain and the DDTtolerant strain); from the Research Branch Laboratory in London, Ontario (GGA strain, London Wild Normal strain, and London Wild Resistant strain (see Monro et al 1961)); and a local strain (Mac. strain) was collected a t Macdonald College.…”

Section: Collecting Rearing and Handling Of Experimental Insectsmentioning

confidence: 99%

Small Chamber Tests of Ethylene Dibromide and Ethylene Dichloride on Adult Grain-Infesting Coleoptera

Ellis¹,

Morrison²

1967

Can. J. Zool.

View full text Add to dashboard Cite

Six strains of adult Sitophilus ~ru~narircs and one each of Tr'rQnEbm confusum and OryeaephiLus sarinam.enszs were fumigated with ethylene dihromide and ethylene dichloride ro evaluate a small chamber fumigation technique as a means of cs~blishing stisccptihility levels. The influence of external factors, including the etiect ai i n m t diet before and after fumigation, on the cornparative mortalities was also investigated. 'l'he suitahility of this technique lor detecting and comparing sttsfcpti bility dincrcnces was indicated.The I.Di0 values of a strain fumigated on different days varied as much as 400/G, whereas t h e ratios o l a standard and trrt strain fumigated on the same day varied less than 6% on different days.The natural mortality of S. granarius fed 10% sugar solution was less than that of those fed wheat grains. Sugar solution fed before exposure made the weevils more susceptible but when it was fed during the postexposure period it increased the observed LDso by 60%.

show abstract

Depression of the minimum concentration of methyl bromide effective against diapausing warehouse moth larvae at 15°c by prior exposure at a moderate concentration

Bell

1982

Pestic. Sci.

View full text Add to dashboard Cite

Warehouse moth (Ephestia elutella) larvae in diapause were exposed at 15°C to methyl bromide at 8 mg litre−1 for 14.5 h and then immediately exposed at a lower concentration. The exposure at 8 mg litre−1 killed 44–69% of the larvae treated. Subsequent concentrations down to 1.1 mg litre−1 obeyed Haber's rule (concentration × time= k, a constant for mortality), but a higher concentration‐time product (ct) was required for over 90% kill at 0.8 mg litre−1. Only concentrations down to 1.9 mg litre−1 obey Haber's rule if there is no prior exposure at a higher concentration. Although minimum effective concentrations are lower at 15°C than at 25°C, exposure at a higher concentration depresses the subsequent level to a similar extent at each temperature. The contribution to the efficacy of a treatment, of low concentrations persisting at the end of fumigation, is thus likely to be even greater at moderate to low temperatures than at 25°C. The implications for the development of resistance to methyl bromide are discussed.

show abstract

Induced tolerance of stored‐product beetles to methyl bromide

Cited by 18 publications

References 5 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)

Small Chamber Tests of Ethylene Dibromide and Ethylene Dichloride on Adult Grain-Infesting Coleoptera

Depression of the minimum concentration of methyl bromide effective against diapausing warehouse moth larvae at 15°c by prior exposure at a moderate concentration

Contact Info

Product

Resources

About