Laboratory evaluation of organophosphorus insecticides against susceptible and malathion-resistant strains of Tribolium castaneum (Herbst) (Coleoptera, Tenebrionidae)

The red flour beetle is a very important primary insect pest of wheat worldwide. The experiments were performed to check the virulence of Beauveria bassiana and Isaria fumosorosea by insect dipping method on the adults and 2nd instar of Tribolium castaneum. Conidia were taken from 15 days old fungi and subsequently four concentrations i.e., 2×108, 3×108, 4×108 and 5×108 spores/ml of both fungi were prepared in 0.05% Tween 80 solution. Minimum 12.5% and maximum 32.5% mortality of adult insects was recorded on 7th day after the treatment at 2×108 and 5×108 spores/ml concentrations of B. bassiana, respectively while on larval stages, minimum 2.5% on 5th day and maximum 80.0% mortality was observed on 7th day post treatment of B. bassiana, respectively. On the other side, minimum 7.5 and maximum 22.5 mortality percentage was noted on 7th day post application of I. fumosorosea, respectively while on immatures minimum 5% on 6th day and highest 70% mortality was noted on 7th day post infection with 2×108 and 5×108 spores/ml of I. fumosorosea, correspondingly. This study showed the effectiveness of insect pathogenic fungi against the important stored grain insect pest and proved to be a positive management strategy.

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Laboratory evaluation of some organophosphorus insecticides against Tribolium confusum Duv. and T. castaneum (Hbst.) (Coleoptera, Tenebrionidae)

Journal of Stored Products Research ◽

10.1016/0022-474x(66)90005-1 ◽

1966 ◽

Vol 1 (3) ◽

pp. 247-253 ◽

Cited By ~ 18

Author(s):

R.W. Lemon

Keyword(s):

Tribolium Confusum ◽

Laboratory Evaluation ◽

Organophosphorus Insecticides ◽

Coleoptera Tenebrionidae

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Efficacy of some indigenous plants and a synthetic insecticide for the control of Tribolium castaneum (herbst.) (coleoptera: tenebrionidae)

International Journal of Bioassays ◽

10.21746/ijbio.2016.01.008 ◽

2016 ◽

Vol 5 (01) ◽

pp. 4742

Author(s):

Mumtaz Akhtar ◽

Naheed Akhtar* ◽

Muhammad Arshad ◽

Naima Iram ◽

Muhammad Iqbal ◽

...

Keyword(s):

Tribolium Castaneum ◽

Eucalyptus Camaldulensis ◽

Ethanol Extract ◽

Cumulative Effects ◽

Piper Nigrum ◽

Paper Test ◽

Indigenous Plants ◽

Synthetic Insecticide ◽

Insecticidal Action ◽

Coleoptera Tenebrionidae

Research studies were carried out to evaluate insecticidal action of two plant products and a synthetic insecticide on a major stored-product insect, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). The plant species studied were, Piper nigrum and Eucalyptus camaldulensis, whereas methoprene used as synthetic insecticide. Two formulations viz., powder and ethanol extract of each plant and four concentrations (5ppm, 10ppm, 15ppm and 20 ppm) of methoprene were tested. Repellency was tested using the filter paper test whereas mortality, weight loss protection and anti-feedant potential of all treatments was evaluated by using whole maize grains. Our results were highly significant as compared to control however; P. nigrum was more effective as compared to E. camaldulensis. The investigation of cumulative effects of botanical and synthetic insecticide and isolation of active ingredients of botanicals are further issues to be investigated for their inclusion in. I. P. M programs.

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