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 4 Percentage mortality of D. maculatus larvae treated with V. amygdalina and T. diversifolia extracts

Exposure time (hours)	Plant extracts	Mortality percentage (mean ± SE)
		Concentration (%)/100 g of smoked catfish
		1	3	6	9	12
24	T. diversifolia	50.00 ± 3.04^bc	62.50 ± 3.35^bc	80.00 ± 3.04^bc	92.50 ± 3.35^b	100.00 ± 0.00^b
	V. amygdalina	40.00 ± 2.04^b	60.00 ± 3.04^b	77.50 ± 3.25^b	90.00 ± 3.04^b	97.50 ± 2.25^b
48	T. diversifolia	62.50 ± 3.35^cd	80.00 ± 3.04^cd	90.00 ± 3.04^c	100.00 ± 0.00^b	100.00 ± 0.00^b
	V. amygdalina	57.50 ± 3.25^c	72.50 ± 2.35^bc	87.50 ± 3.25^c	100.00 ± 0.00^b	100.00 ± 0.00^b
72	T. diversifolia	77.50 ± 3.25^ef	87.50 ± 3.25^de	100.00 ± 0.00^d	100.00 ± 0.00^b	100.00 ± 0.00^b
	V. amygdalina	70.00 ± 3.04^de	82.50 ± 3.35^d	92.50 ± 3.35^cd	100.00 ± 0.00^b	100.00 ± 0.00^b
96	T. diversifolia	90.00 ± 3.04^f	100.00 ± 0.00^e	100.00 ± 0.00^d	100.00 ± 0.00^b	100.00 ± 0.00^b
	V. amygdalina	87.50 ± 3.25^f	90.00 ± 3.04^e	100.00 ± 0.00^d	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)