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 6 Percentage mortality of D. maculatus adults treated with T. diversifolia and V. amygdalina leaf extracts

Exposure time (hours)	Plant extracts	Mortality percentage (mean ± SE)
		Concentration (%)/100 g of smoked catfish
		1	3	6	9	12
24	T. diversifolia	47.50 ± 2.25^b	60.00 ± 3.04^bc	77.50 ± 3.25^b	90.00 ± 3.04^b	100.00 ± 0.00^b
	V. amygdalina	42.50 ± 2.35^b	57.50 ± 3.25^b	72.50 ± 3.25^b	87.50 ± 3.25^b	92.50 ± 2.35^b
48	T. diversifolia	60.00 ± 3.04^cd	77.50 ± 3.25^de	92.50 ± 3.25^c	100.00 ± 0.00^b	100.00 ± 0.00^b
	V. amygdalina	52.50 ± 3.35^bc	70.00 ± 2.04^cd	90.00 ± 3.04^c	97.50 ± 2.25^b	100.00 ± 0.00^b
72	T. diversifolia	72.50 ± 3.35^d	82.50 ± 3.35^e	100.00 ± 0.00^c	100.00 ± 0.00^b	100.00 ± 0.00^b
	V. amygdalina	67.50 ± 3.25^d	80.00 ± 3.04^de	97.50 ± 3.25^c	100.00 ± 0.00^b	100.00 ± 0.00^b
96	T. diversifolia	87.50 ± 3.25^e	97.50 ± 2.25^f	100.00 ± 0.00^c	100.00 ± 0.00^b	100.00 ± 0.00^b
	V. amygdalina	82.50 ± 3.35^e	87.50 ± 3.25^ef	100.00 ± 0.00^c	100.00 ± 0.00^b	100.00 ± 0.00^b
	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