Effectiveness of wheat-applied contact insecticides against Sitophilus granarius (L.) originating from different populations

Kljajić, Petar; Peric, I.

doi:10.1016/j.jspr.2007.03.001

Cited by 30 publications

(15 citation statements)

References 11 publications

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“…Huang and Subramanyam (2005) had earlier found 100% efficacy of pirimiphos-methyl (EC) after exposing adults of S. oryzae, T. castaneum and rusty grain beetle Cryptolestes ferrugineus (Stephens) (Coleoptera: Laemophloeidae) for seven days to wheat grain treated with a rate of 4 mg/ kg, while the same level of efficacy against larvae of P. interpunctella was found after 21 days of exposure. Kljajić and Perić (2007) had found that pirimiphos-methyl (EC) required a rate of 0.47 mg/kg in wheat grain to reach 95% mortality of S. granarius adults after two days of exposure.…”

Section: Discussionmentioning

confidence: 99%

Residual efficacy of cypermethrin and pirimiphos-methyl against Sitophilus granarius (L.) and Plodia interpunctella (Hübner) on concrete surface

2014

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SummaRyResidual activity of EC formulations of two insecticides, cypermethrin (combined with the synergist piperonyl butoxide) and pirimiphos-methyl, against Sitophilus granarius (L.) adults and Plodia interpunctella (Hübner) larvae was investigated on concrete surface. The experiment was run indoors at 16-24ºC temperature and 30-60% r.h. by applying water solutions of products based on cypermethrin (48 mg AI/m 2 ) and pirimiphos-methyl (750 mg AI/m 2 ) to concrete surface. Insect mortality was estimated after 2, 7 and 14 days of insect exposure to treated concrete and 7 days of recovery on untreated coarse wheat meal at 24-26ºC and 55-65% r.h in the laboratory.High efficacy of cypermethrin against S. granarius adults (87-100%) and P. interpunctella larvae (84-100%) was detected after 14 days of exposure to all deposits on concrete surface. Pirimiphos-methyl achieved maximum efficacy (100%) in all treatments of S. granarius adults and P. interpunctella larvae after 2 and 14 days of exposure, regardless of deposit age. After 7 days of recovery, the efficacy of both insecticides mostly increased, especially of cypermethrin, up to around 50% after two days of exposure, up to 24-45% after seven days of exposure and up to 15% after 14 days of exposure. The results show that the EC formulations of cypermethrin and especially of pirimiphos-methyl were highly effective in controlling S. granarius adults and P. interpunctella larvae over a period of 60 days following application to concrete surface.

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Section: Discussionmentioning

confidence: 99%

Residual efficacy of cypermethrin and pirimiphos-methyl against Sitophilus granarius (L.) and Plodia interpunctella (Hübner) on concrete surface

2014

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“…Geographical variation in susceptibility of beetles in stored products to insecticides is commonly reported (Athanassiou et al 2008;Huang et al 2004;Kljajić and Perić 2007). Huang et al (2004) demonstrated higher susceptibility of laboratory strains (that have never been previously exposed to insecticides) of Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae), Cryptolestes ferrugineus (Stephens) (Coleoptera: Cucujidae) and T. castaneum to spinosad compared with the field strain of each insect and attributed it to low genetic diversity due to inbreeding of laboratory strains.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of Clausena anisata and Plectranthus glandulosus leaf powder against Prostephanus truncatus (Coleoptera: Bostrichidae) and two strains of Sitophilus zeamais (Coleoptera: Curculionidae) on maize

2010

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Powdered leaves of Clausena anisata andPlectranthus glandulosus were evaluated on Cameroonian and German strains of Sitophilus zeamais and Prostephanus truncatus for their insecticidal activities, the effects on progeny production, grain damage and population increase by admixing powders and maize grains. The two powders caused significant mortality of the three insects with P. glandulosus being far more effective than C. anisata. P. truncatus was less susceptible to P. glandulosus powder compared with the two strains of S. zeamais. The German strain (LD 50 = 2.75 g/100 g grain) of S. zeamais was less susceptible to P. glandulosus powder than the Cameroonian strain (LD 50 = 1.86 g/100 g grain). P. glandulosus unlike C. anisata powder, considerably reduced grain damage, progeny production and population increase. This study shows that there is a great potential for the powder of P. glandulosus as a promising grain protectant for integration within the subsistence farming systems of sub-saharan Africa.

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“…One of the factors that affect the response of an organism to insecticide is its geographical origin [29,30]. Foreign weevils reared on novel food were larger in size and exhibited higher tolerance to DDVP than their Nigeria counterpart.…”

Section: Discussionmentioning

confidence: 99%

Impact of a Local Nigerian Rice Variety and Wheat on the Tolerance of Geographical Strains of <i>Sitophilus oryzae</i> to Dichlorvos

Gbaye¹

2019

AJE

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Rice weevil, Sitophilus oryzae, a cosmopolitan pest of stored cereals (including wheat and rice) is moved around inadvertently through global cereal trade. In this study, we consider the effect of strain origin and host food on the tolerance of S. oryzae to dichlorvos, a common insecticide used to protect stored grains in Nigeria. Three geographical strains of S. oryzae (Nigeria, Trinidad and Morocco) were bred separately on Ofada rice (a Nigerian local rice variety) and wheat and then exposed to dichlorvos. The data were analyzed using analysis of variance and General Linear Model, probit analysis was used to estimate LC 50 and LC 95 values. The strain by food combinations varied significantly in their tolerance to dichlorvos. Overall, the Nigerian strain was the least tolerant. Nonetheless, for all strains novel host food influenced their tolerance positively; wheat in the case of the Nigerian strain and Ofada rice for the exotic strains. The results were discussed in terms of varying body size among the strains and physiological effect when insects find themselves in novel environments. The risk posed to local Nigerian rice varieties is considered through the import of exotic strains of S. oryzae, especially when entering the country on wheat.

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Effectiveness of wheat-applied contact insecticides against Sitophilus granarius (L.) originating from different populations

Cited by 30 publications

References 11 publications

Residual efficacy of cypermethrin and pirimiphos-methyl against Sitophilus granarius (L.) and Plodia interpunctella (Hübner) on concrete surface

Residual efficacy of cypermethrin and pirimiphos-methyl against Sitophilus granarius (L.) and Plodia interpunctella (Hübner) on concrete surface

Efficacy of Clausena anisata and Plectranthus glandulosus leaf powder against Prostephanus truncatus (Coleoptera: Bostrichidae) and two strains of Sitophilus zeamais (Coleoptera: Curculionidae) on maize

Impact of a Local Nigerian Rice Variety and Wheat on the Tolerance of Geographical Strains of <i>Sitophilus oryzae</i> to Dichlorvos

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Effectiveness of wheat-applied contact insecticides against Sitophilus granarius (L.) originating from different populations

Cited by 30 publications

References 11 publications

Residual efficacy of cypermethrin and pirimiphos-methyl against Sitophilus granarius (L.) and Plodia interpunctella (Hübner) on concrete surface

Residual efficacy of cypermethrin and pirimiphos-methyl against Sitophilus granarius (L.) and Plodia interpunctella (Hübner) on concrete surface

Efficacy of Clausena anisata and Plectranthus glandulosus leaf powder against Prostephanus truncatus (Coleoptera: Bostrichidae) and two strains of Sitophilus zeamais (Coleoptera: Curculionidae) on maize

Impact of a Local Nigerian Rice Variety and Wheat on the Tolerance of Geographical Strains of &lt;i&gt;Sitophilus oryzae&lt;/i&gt; to Dichlorvos

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Impact of a Local Nigerian Rice Variety and Wheat on the Tolerance of Geographical Strains of <i>Sitophilus oryzae</i> to Dichlorvos