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

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