Laboratory and Field Evaluation of an Indoxacarb Gel Bait Against Two Cockroach Species (Dictyoptera: Blattellidae, Blattidae) in Lagos, Nigeria
2014
Anikwe, Joseph Chuks | Adetoro, Fouad Abidemi | Anogwih, Joy Anuri | Makanjuola, Winifred Ayinke | Kemabonta, Kehinde Abike | Akinwande, Kayode Lawrence
Indoxacarb gel bait was evaluated for its efficacy in the laboratory and field against American cockroaches, Periplaneta americana (L.), and German cockroaches, Blattella germanica (L.). Advion 0.6% indoxacarb gel bait was toxic to both P. americana and B. germanica. There were no significant differences in the LT₅₀ (h) values for treatment levels of 0.25 g, 0.5 g, and 1.0 g gel applied against P. americana, whereas gel applied at 0.5 g to B. germanica had a significantly greater LT₅₀ (h) in the laboratory than the gel treatments on P. americana. The LT₅₀ for both cockroach species ranged from 40.65 to 145.60 h. There was no control mortality in the laboratory bioassays. In the field, 55 houses were treated with 0.5 g of 6–8 spots of indoxacarb gel bait per kitchen of two or three bedroom bungalows from three Local Government Areas of Lagos State, comprising Sumiere (22), Alimosho (12), and Shomolu (21). Mean reduction in cockroach populations varied from location to location based on the level of infestations. Percentage reductions in the indoxacarb gel-treated units ranged from 3.5% at 1 d after treatment to 99.8% at 14 d at Sumiere, while reductions ranged from 8.9% at 1 d after treatment to 99.7% at 14 d at Shomolu; a similar trend was observed for Alimosho. Indoxacarb gel bait was highly effective in the control of cockroaches.
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