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Table 1 Mortality of Temnorhynchus baal larvae after exposure to different populations of Heterorhabditis indica and numbers of emerging nematode-infective juveniles using 2 different types of soil as substrates (mean of four replicates (cups) each has four insects. The control has the grubs without nematodes)

From: Comparison of virulence, reproductive potential, and persistence among local Heterorhabditis indica populations for the control of Temnorhynchus baal (Reiche & Saulcy) (Coleoptera: Scarabaeidae) in Egypt

H. indica population code Soil type Mortalities of T. baal larvae (5 days post-treatment) Number of emerging nematode-infective juveniles/grub larva
Days of post-infestation
Mean ± SE Mortality % 10 days (7 April 2018) 18 days (15 April 2018) 26 days (23 April 2018) 30 days (1 May 2018) Total IJs rate/larva
20 Sandy 4 ± 0 100 324 39,606 4522 4 44,456
16 Loamy sand 3.75 ± 0.43 93.75 294 36,005 1455 0 37,754
46 Loamy sand 3.75 ± 0.43 93.75 199 33,855 1460 0 35,514
15 Loamy sand 3.75 ± 0.43 93.75 124 35,864 1328 0 37,316
17 Loamy sand 3.75 ± 0.43 93.75 151 38,157 1457 0 39,765
32 Loamy sand 3.75 ± 0.43 93.75 102 30,787 1405 0 32,294
19 Loamy sand 4 ± 0 100 114 30,228 2492 0 32,834
18 Loamy sand 4 ± 0 100 127 32,363 1437 0 33,927
35 Loamy sand 4 ± 0 100 131 31,148 1491 2 32,772
33 Sandy 4 ± 0 100 211 37,455 3640 0 41,306
27 Loamy sand 4 ± 0 100 100 30,515 2462 0 33,077
26 Loamy sand 4 ± 0 100 187 31,356 1487 0 33,030
39 Sandy 4 ± 0 100 174 36,718 7669 17 44,578
37/2 Sandy 4 ± 0 100 155 38,987 2528 0 41,670
31 Sandy 4 ± 0 100 389 41,018 12,575 3 53,985
4//2 Sandy 4 ± 0 100 166 42,757 1573 2 44,498
34 Loamy sand 4 ± 0 100 103 34,036 1438 5 35,582
5 Sandy 4 ± 0 100 129 44,308 3588 7 48,032
44 Sandy 4 ± 0 100 209 43,817 2554 9 46,589
48 Loamy sand 4 ± 0 100 151 36,834 1701 2 38,688
11 Loamy sand 4 ± 0 100 101 39,789 1448 0 41,338
18/2 Sandy 4 ± 0 100 156 44,393 4172 0 48,721
47 Sandy 4 ± 0 100 177 43,688 15,812 0 59,677
60 Sandy 4 ± 0 100 188 42,540 2773 0 45,501
40/2 Loamy sand 4 ± 0 100 114 34,334 2295 0 36,743
41 Loamy sand 4 ± 0 100 107 37,599 1826 0 39,532
40 Loamy sand 4 ± 0 100 122 35,288 1368 0 36,778
21 Sandy 4 ± 0 100 184 43,585 3229 0 46,998
6 //2 Sandy 4 ± 0 100 177 42,715 2856 0 45,748
50 Loamy sand 4 ± 0 100 218 38,150 1560 0 39,928
22 Sandy 4 ± 0 100 139 41,894 2778 7 44,818
43 Loamy sand 4 ± 0 100 190 35,828 2816 2 38,836
25 Sandy 3.75 ± 0.43 93.75 248 41,196 9491 8 50,943
58 Loamy sand 4 ± 0 100 112 38,005 805 0 38,922
7 Loamy sand 4 ± 0 100 110 34,113 1632 11 35,866
38 Loamy sand 4 ± 0 100 97 37,989 1470 9 39,565
29 Loamy sand 4 ± 0 100 162 33,661 1534 0 35,357
6 Loamy sand 4 ± 0 100 137 34,702 1519 0 36,358
Control 1 Loamy sand 0.25 ± 0.43 6.25 0 0 0 0 0
Control 2 Sandy 0.5 ± 0.5 12.5 0 0 0 0 0