Varietal effects of cowpea, Vigna unguiculata, on tolerance to malathion in Callosobruchus maculatus (Coleoptera: Bruchidae)

Gbaye, Olajire A.; Holloway, Graham J.

doi:10.1016/j.jspr.2011.06.003

Cited by 41 publications

(22 citation statements)

References 38 publications

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“…Callosobruchus spp. can cause damage of legume seeds up to cent per cent during storage (Gbaye and Holloway, 2011). Damage caused by bruchid during storage may count 5.00-10.00 and 20.00-30.00 per cent in the temperate and tropical countries, respectively (Kiradoo and Srivastava, 2010).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of different solvent extracts of sweet flag rhizome, Acorus calamus (L.) on pulse beetle, Callosobruchus maculatus (F.)

Saranya

Nelson

Paramasivam

et al. 2019

IJARe

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Investigation was conducted to test the insecticidal activity of sweet flag rhizome (Acorus calamus L.) extracts on Callosobruchus maculatus (F.) on cow pea in storage during 2016-2017 at the Department of Agricultural Entomology, Agricultural College and Research Institute, Coimbatore. Sweet flag (SF) extracts obtained by different extraction methods (soxhlet and mechanical shaker extraction) using various solvents viz., hexane, ethyl acetate and ethanol exhibited varied levels of insecticidal action on Callosobruchus maculatus (F.). Pulse beetle on cow pea seeds, there was a positive correlation between the concentration of the sweet flag extracts and the insecticidal action. The LC50 value of hexane, ethyl acetate and ethanol extract of SF obtained in soxhlet extraction for C. maculatus was 0.042, 0.230 and 0.069 per cent at 48 hours, respectively. The LC50 value of hexane, ethyl acetate and ethanol extract of SF obtained in mechanical shaker extraction for C. maculatus was 0.009, 0.275 and 0.069 per cent at 48 hours, respectively. Hexane extract of SF obtained from both extraction methods (soxhlet and mechanical shaker) showed cent per cent mortality at 0.09 and 0.1 per cent on 5th day after treatment (DAT). For ethyl acetate and ethanol extracts of SF obtained from both extraction methods (soxhlet and mechanical shaker), caused more than 80 per cent mortality was observed on 6th DAT at 0.09 and 0.1 per cent on pulse beetle respectively. On 90 DAT, hexane extract of SF obtained from both extraction methods and of ethyl acetate extract of SF obtained from mechanical shaker extraction, there was no progeny development of C. maculatus at 0.05, 0.07, 0.09 and 0.1per cent concentrations. Cent per cent mortality and there is no progeny development C. maculatus in 0.09 and 0.1 per cent of hexane extract of SF (both extraction methods) and ethyl acetate extract of SF (mechanical shaker extraction) treated cowpea seeds upto 90 days when compared to untreated control.

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Section: Introductionmentioning

confidence: 99%

Evaluation of different solvent extracts of sweet flag rhizome, Acorus calamus (L.) on pulse beetle, Callosobruchus maculatus (F.)

Saranya

Nelson

Paramasivam

et al. 2019

IJARe

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“…Seed physical characteristics, such as color, texture, size and hardness, are associated with the resistance of some varieties of cowpea to C. maculatus, as indicated by decreased oviposition (Gbaye & Holloway, 2011). However, most studies have only recorded the type of resistance and not investigated its causes (Costa & Boiça Júnior, 2004;Carvalho et al, 2011;Marsaro Junior & Vilarinho, 2011).…”

Section: Resultsmentioning

confidence: 99%

Characterization of cowpea genotype resistance to Callosobruchus maculatus

Castro

Baldin

Cruz

et al. 2013

Pesq. agropec. bras.

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-The objective of this work was to characterize the resistance of 50 cowpea (Vigna unguiculata) genotypes to Callosobruchus maculatus. A completely randomized design with five replicates per treatment (genotype) was used. No-choice tests were performed using the 50 cowpea genotypes to evaluate the preference for oviposition and the development of the weevil. The genotypes IT85 F-2687, MN05-841 B-49, MNC99-508-1, MNC99-510-8, TVu 1593, Canapuzinho-1-2, and Sanzi Sambili show non-preference-type resistance (oviposition and feeding). IT81 D-1045 Ereto and IT81 D-1045 Enramador exhibit antibiosis against C. maculatus and descend from resistant genitors, which grants them potential to be used in future crossings to obtain cowpea varieties with higher levels of resistance.

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“…Similarly, increasing temperature from 23 to 30 °C for 24 h resulted in a significantly higher mortality of the cowpea weevil, Callosobruchus maculates (Fabr.) (Coleoptera: Bruchidae) along the gradient of increasing malathion concentrations (Gbaye & Holloway, ; Gbaye et al ., ). In the Colorado potato beetle, 4 different pyrethroid insecticides showed decreases in toxicity when the beetles were maintained between 14 and 30 °C, but increases between 30 and 35 °C (Grafius, ).…”

Section: Discussionmentioning

confidence: 99%

Heat‐induced mortality and expression of heat shock proteins in Colorado potato beetles treated with imidacloprid

et al. 2015

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The Colorado potato beetle is an important pest of solanaceous plants in the Northern Hemisphere. Better understanding of its physiological responses to temperature stress and their interactions with still-prevalent chemical control has important implications for the management of this insect. We measured mortality and expression of the Hsp70 heat shock proteins in the Colorado potato beetle larvae exposed to sublethal concentration of the commonly used insecticide imidacloprid, and to supraoptimal temperatures. Both turned out to be significant stress factors, although induction of Hsp70 by imidacloprid observed in the present study was low compared to its induction by the heat. The two factors also interacted with each other. At an extreme temperature of 43 °C, exposure to a sublethal dose of imidacloprid resulted in a significant rise in larval mortality, which was not observed at an optimal temperature of 25 °C. Heat-stressed larvae also failed to respond to imidacloprid by producing more Hsp70. These findings suggest that when field rates of insecticides become insufficient for killing the exposed beetles under optimal temperature conditions due to the evolution of resistance in beetle populations, they may still reduce the probability of resistant beetles surviving the heat shock created by using propane flamers as a rescue treatment.

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Varietal effects of cowpea, Vigna unguiculata, on tolerance to malathion in Callosobruchus maculatus (Coleoptera: Bruchidae)

Cited by 41 publications

References 38 publications

Evaluation of different solvent extracts of sweet flag rhizome, Acorus calamus (L.) on pulse beetle, Callosobruchus maculatus (F.)

Evaluation of different solvent extracts of sweet flag rhizome, Acorus calamus (L.) on pulse beetle, Callosobruchus maculatus (F.)

Characterization of cowpea genotype resistance to Callosobruchus maculatus

Heat‐induced mortality and expression of heat shock proteins in Colorado potato beetles treated with imidacloprid

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