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Table 6 Percentage mortality of D. maculatus adults treated with T. diversifolia and V. amygdalina leaf 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 47.50 ± 2.25b 60.00 ± 3.04bc 77.50 ± 3.25b 90.00 ± 3.04b 100.00 ± 0.00b
  V. amygdalina 42.50 ± 2.35b 57.50 ± 3.25b 72.50 ± 3.25b 87.50 ± 3.25b 92.50 ± 2.35b
48 T. diversifolia 60.00 ± 3.04 cd 77.50 ± 3.25de 92.50 ± 3.25c 100.00 ± 0.00b 100.00 ± 0.00b
  V. amygdalina 52.50 ± 3.35bc 70.00 ± 2.04 cd 90.00 ± 3.04c 97.50 ± 2.25b 100.00 ± 0.00b
72 T. diversifolia 72.50 ± 3.35d 82.50 ± 3.35e 100.00 ± 0.00c 100.00 ± 0.00b 100.00 ± 0.00b
  V. amygdalina 67.50 ± 3.25d 80.00 ± 3.04de 97.50 ± 3.25c 100.00 ± 0.00b 100.00 ± 0.00b
96 T. diversifolia 87.50 ± 3.25e 97.50 ± 2.25f 100.00 ± 0.00c 100.00 ± 0.00b 100.00 ± 0.00b
  V. amygdalina 82.50 ± 3.35e 87.50 ± 3.25ef 100.00 ± 0.00c 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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