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Table 1 Percentage mortality of D. maculatus treated larvae with V. amygdalina and T. diversifolia leaves powder

From: 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]

Exposure time (hours)

Plant powders

Mortality percentage (mean ± SE)

Concentration (g)/100 g of smoked catfish

1

3

6

9

12

24

T. diversifolia

27.50 ± 1.25bc

40.00 ± 2.04bc

52.50 ± 2.35b

60.00 ± 3.04bc

82.50 ± 3.35bc

 

V. amygdalina

20.00 ± 2.04b

30.00 ± 2.04b

42.50 ± 2.35b

52.50 ± 2.35b

77.50 ± 3.25b

48

T. diversifolia

37.50 ± 2.25 cd

50.00 ± 2.50 cd

67.50 ± 3.15 cd

77.50 ± 3.25c

90.00 ± 3.04 cd

 

V. amygdalina

30.00 ± 2.04bc

42.50 ± 2.35bc

60.00 ± 3.04c

72.50 ± 3.35c

87.50 ± 3.25 cd

72

T. diversifolia

50.00 ± 3.08ef

67.50 ± 3.25de

80.00 ± 3.04ef

90.00 ± 3.04d

100.00 ± 0.00d

 

V. amygdalina

42.50 ± 2.35de

60.00 ± 3.04d

72.50 ± 3.35de

87.50 ± 3.25d

97.50 ± 2.25d

96

T. diversifolia

62.50 ± 3.35f

82.50 ± 3.35f

92.50 ± 3.35f

100.00 ± 0.00d

100.00 ± 0.00d

 

V. amygdalina

57.50 ± 3.25f

72.50 ± 2.35ef

87.50 ± 3.25f

97.50 ± 2.25d

100.00 ± 0.00d

 

Control

00.00 ± 0.00a

00.00 ± 0.00a

00.00 ± 0.00a

00.00 ± 0.00a

00.00 ± 0.00a

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