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 2 Toxicities of V. amygdalina and T. diversifolia Powders on % Inhibition, weight loss adult emergence of D. maculatus

Conc. (g)	Plant powders	Mean number of surviving larvae ± SE	% adult emergence ± SE	% IR ± SE	% Weight loss ± SE
1	T. diversifolia	7.75 ± 0.05^b	25.00 ± 2.15^b	88.23 ± 3.56^bc	6.50 ± 0.05^b
1	V. amygdalina	9.50 ± 0.03^b	42.50 ± 2.35^c	76.47 ± 3.32^b	8.00 ± 1.08^b
3	T. diversifolia	3.00 ± 0.04^b	0.00 ± 0.00^a	100.00 ± 0.00^c	0.00 ± 0.00^a
3	V. amygdalina	5.50 ± 0.03^b	20.00 ± 2.04^b	94.11 ± 3.79^c	2.50 ± 0.03^b
6	T. diversifolia	1.00 ± 0.04^ab	0.00 ± 0.00^a	100.00 ± 0.00^c	0.00 ± 0.00^a
6	V. amygdalina	3.00 ± 0.04^ab	0.00 ± 0.00^a	100.00 ± 0.00^c	0.00 ± 0.00^a
9	T. diversifolia	0.00 ± 0.00^a	0.00 ± 0.00^a	100.00 ± 0.00^c	0.00 ± 0.00^a
9	V. amygdalina	1.00 ± 0.04a^b	0.00 ± 0.00^a	100.00 ± 0.00^c	0.00 ± 0.00^a
12	T. diversifolia	0.00 ± 0.00^a	0.00 ± 0.00^a	100.00 ± 0.00^c	0.00 ± 0.00^a
12	V. amygdalina	0.00 ± 0.00^a	0.00 ± 0.00^a	100.00 ± 0.00^c	0.00 ± 0.00^a
0.0	Control	20.00 ± 2.04^c	82.50 ± 4.15^d	0.00 ± 0.00^a	65.00 ± 3.40^c

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