© Benaki Phytopathological Institute
Katsarou
et al.
104
Table 2.
Residual toxicity of three insecticides to larvae (first and third instars) and adults of
Propylaea quatuordecimpunctata
in a 24-h exposure bioassay. Mortality was assessed for lar-
vae 1 day after exposure to insecticides, upon pupation and adult emergence and for adults
1, 10 and 20 days after exposure to insecticides.
Insecticides
% Mean mortality ± SE
1-day residues
8-day residues
First instar larvae
1 day
Pupation
Adult emergence
1 day
Pupation Adult emergence
Imidacloprid 100 ± 0 a* 100 ± 0 a
100 ± 0 a
95.0 ± 5.0 a 95.0 ± 5.0 a 95.0 ± 5.0 a
Thiacloprid 100 ± 0 a 100 ± 0 a
100± 0 a
100 ± 0 a 100 ± 0 a
100 ± 0 a
Methomyl
100 ± 0 a 100 ± 0 a
100 ± 0 a
100 ± 0 a 100 ± 0 a
100 ± 0 a
Control
9.0 ± 5.6 b 13.0 ± 8.3 b 18.0 ± 4.6 b 9.0 ± 5.6 b 13.0 ± 8.3 b 18.0 ± 4.6 b
Third instar larvae
1 day
Pupation
Adult emergence
1 day
Pupation Adult emergence
Imidacloprid 75.0 ± 19.3 a 90 ± 10 a
90 ± 10 a
71.8 ± 18.1 a 88.7 ± 6.6 a 88.7 ± 6.6 a
Thiacloprid 79.2 ± 16.3 a 100 ± 0 a
100 ± 0 a
95.0 ± 5.0 a 95.0 ± 5.0 a 95.0 ± 5.0 a
Methomyl
95.8 ± 4.2 a 90 ± 4 a
100 ± 0 a
100 ± 0 a 100 ± 0 a
100 ± 0 a
Control
5.0 ± 5.0 b 5.0 ± 5.0 b 16.5 ± 9.2 b 5.0 ± 5.0 b 5.0 ± 5.0 b 16.5 ± 9.2 b
Adults
1 day
Pupation
Adult emergence
1 day
Pupation Adult emergence
Imidacloprid 70 ± 20 b 90 ± 4 a
90 ± 4 a
60.7 ± 18.7 a 96.4 ± 3.5 a 96.4 ± 3.5 a
Thiacloprid 60 ± 20 b 100 ± 0 a
100 ± 0 a
82.2 ± 11.6 a 96.8 ± 3.1 a
100 ± 0 a
Methomyl
100 ± 0 a 100 ± 0 a
100 ± 0 a
100 ± 0 a 100 ± 0 a
100 ± 0 a
Control
0.0 ± 0.0 c 15.0 ± 6.1 b 15.0 ± 6.1 b 0.0 ± 0.0 b 15.0 ± 6.1 b 15.0 ± 6.1 b
* Values within each column and developmental stage followed by the same letter do not differ significantly (Mann-
Whitney U test, P≥0.05).
Table 3.
Residual toxicity of three insecticides to larvae (first and third instars) and adults of
Oenopia conglobata
in a 24-h exposure bioassay. Mortality was assessed for larvae 1 day af-
ter exposure to insecticides, upon pupation and adult emergence and for adults 1, 10 and 20
days after exposure to insecticides.
Insecticides
% Mean mortality ± SE
1-day residues
8-day residues
First instar larvae
1 day
Pupation Adult emergence
1 day
Pupation Adult emergence
Imidacloprid 96.7 ± 3.3 a 100 ± 0 a
100 ± 0 a
100 ± 0 a 100 ± 0a
100 ± 0a
Thiacloprid 100 ± 0 a
100 ± 0 a
100 ± 0 a
71.6 ± 13.3 a 100 ± 0a
100 ± 0a
Methomyl
100 ± 0 a 100 ± 0 a
100 ± 0 a
91.1 ± 12.2 a 100 ± 0a
100 ± 0a
Control
0 ± 0 b
0 ± 0 b
9.0 ± 5.5 b
0 ± 0 b
0 ± 0 b
9.0 ± 5.5 b
Third instar larvae
1 day
Pupation Adult emergence
1 day
Pupation Adult emergence
Imidacloprid 93.3 ± 6.6 ab 100 ± 0 a
100 ± 0 a
70.8 ±23.9 a 87.5 ± 12.5 a 87.5 ± 12.5 a
Thiacloprid 70 ± 15.2 b 95.0 ± 7.6 a
100 ± 0 a
93.7 ± 6.2 a 100 ± 0 a
100 ± 0 a
Methomyl
100 ± 0 a 100 ± 0 a
100 ± 0 a
75.0 ± 14.4 a 87.5 ± 7.2 a
100 ± 0 a
Control
0 ± 0 c
0 ± 0 c
9.5 ± 6.2 b
0 ± 0 b
0 ± 0 b
9.5 ± 6.2 b
Adults
1 day
10 days
20 days
1 day
10 days
20 days
Imidacloprid 100 ± 0 a 100 ± 0 a
100 ± 0 a
65.0 ± 11.9 a 89.5 ± 6.2 a 89.5 ± 6.2 a
Thiacloprid 96.7 ± 3.3 a 100 ± 0 a
100 ± 0 a
80.3 ± 6.9 a 100 ± 0 a
100 ± 0 a
Methomyl
100 ± 0 a 100 ± 0 a
100 ± 0 a
81.2 ± 11.8 a 87.5 ± 12.5 a 87.5 ± 12.5 a
Control
5.0 ± 5.0 b 10.6 ± 6.0 b 10.6 ± 6.0 b 5.0 ± 5.0 b 10.6 ± 6.0 b 10.6 ± 6.0 b
* Values within each column and developmental stage followed by the same letter do not differ significantly (Mann-
Whitney U test, P≥0.05)
1...,47,48,49,50,51,52,53,54,55,56 58,59,60,61,62,63,64,65