Responses of two plant-derived bioinsecticides as protectants of smoke-dried catfish, Clarias gariepinus [Pisces: Clariidae] against hide beetle, Dermestes maculatus (De Geer) [Coleoptera: Dermestidae]

Bulletin of the National Research Centre

Table 3 Percentage mortality of D. maculatus adults treated with V. amygdalina and T. diversifolia leaf powder

Exposure time (hours)	Plant powders	Mortality percentage (mean ± SE)
		Concentration (g)/100 g of smoked catfish
		1	3	6	9	12
24	T. diversifolia	22.50 ± 1.35^bc	37.50 ± 2.25^bc	50.00 ± 3.04^bc	57.50 ± 3.25^bc	80.00 ± 3.04^b
	V. amygdalina	12.50 ± 1.35^b	27.50 ± 2.25^b	40.00 ± 2.04^b	50.00 ± 3.04^b	72.50 ± 3.35^b
48	T. diversifolia	32.50 ± 2.35^cd	47.50 ± 2.25^cd	62.50 ± 3.35^cd	72.50 ± 3.25^c	87.50 ± 3.2^bc
	V. amygdalina	27.50 ± 2.25^c	40.00 ± 2.04^bc	57.50 ± 3.25^c	67.50 ± 3.25^c	82.50 ± 3.35^b
72	T. diversifolia	47.50 ± 3.25^ef	62.50 ± 3.35^de	77.50 ± 3.25^ef	87.50 ± 3.25^d	97.50 ± 2.25^cd
	V. amygdalina	40.00 ± 2.04^de	57.50 ± 3.25^d	70.00 ± 3.04^de	82.50 ± 3.35^d	92.50 ± 3.35^cd
96	T. diversifolia	57.50 ± 3.25^f	80.00 ± 3.04^f	87.50 ± 3.25^f	97.50 ± 2.25^d	100.00 ± 0.00^d
	V. amygdalina	50.00 ± 3.04^f	70.00 ± 3.04^ef	82.50 ± 3.35^f	92.50 ± 3.35^d	97.50 ± 2.25^d
	Control	00.00 ± 0.00^a	00.00 ± 0.00^a	00.00 ± 0.00^a	00.00 ± 0.00^a	00.00 ± 0.00^a

Mean followed by the same letters within the same column are not significantly different (P >0.05)