Journal of Crop Protection
Journal of Crop Protection
JCP
Agriculture
http://jcp.modares.ac.ir
1
admin
2251-9041
2251-905X
en
jalali
1393
6
1
gregorian
2014
9
1
3
3
online
1
fulltext
en
Developmental and biochemical effects of hexaflumuron and spirodiclofen on the ladybird beetle, Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae)
The ladybird beetle, <em>Hippodamia variegata</em> (Goeze) (Coleoptera: Coccinellidae) is one of the most important natural enemies of the common pistachio psylla, <em>Agonoscena pistaciae</em> Burckhardt and Lauterer (Hemiptera: Psyllidae). The effects of hexaflumuron and spirodiclofen were investigated on development and carbohydrates and total lipid contents of 4<sup>th</sup> instar larvae of <em>H. variegata</em>. The insecticides had significant effects on the mortality of eggs, but no significant effects on mortality of larvae or pupae. Hexaflumuron significantly increased the length of development of eggs (2.89 days) and first instar larvae (3.28 days), but had no significant effects on other instars or pupae. Spirodiclofen had no significant effects on developmental stages of <em>H. variegata</em>. Glycogen content was significantly reduced by spirodiclofen (17.42 mg/g fresh body weight) and hexaflumuron (16.07 mg/g fresh body weight). Trehalose content in hexaflumuron (1.89 mg/g fresh body weight) and spirodiclofen-treated larvae (2.02 mg/g fresh body weight) was significantly lower than control (8.01 mg/g fresh body weight). Glucose content in spirodiclofen-treated larvae (0.96 mg/g fresh body weight) was significantly higher than in hexaflumuron-treated larvae (0.24 mg/g fresh body weight) and control (0.15 mg/g fresh body weight). Significant reduction in the amount of lipid was observed in spirodiclofen-treated larvae (5.29 mg/g fresh body weight), but not in hexaflumuron-treated larvae (7.11 mg/g fresh body weight). These results suggest that substantial physiological events in the life of larvae are affected in response to the action of the tested insecticides.
Carbohydrates,Spirodiclofen,Hexaflumuron,Hippodamia variegata
335
344
http://jcp.modares.ac.ir/browse.php?a_code=A-3-1000-4448&slc_lang=en&sid=3
Najmeh
Alimohammadi
Najmeh
Alimohammadi
100319475328460050866
100319475328460050866
No
Department of Plant Protection, Vali-e-Asr University, Rafsanjan, Iran.
Department of Plant Protection, Vali-e-Asr University, Rafsanjan, Iran.
Mohamad
Samih
Mohamad
Samih
100319475328460050864
100319475328460050864
No
Department of Plant Protection, Vali-e-Asr University, Rafsanjan, Iran.
Department of Plant Protection, Vali-e-Asr University, Rafsanjan, Iran.
Hamzeh
Izadi
Hamzeh
Izadi
100319475328460050869
100319475328460050869
Yes
Department of Plant Protection, Vali-e-Asr University, Rafsanjan, Iran.
Department of Plant Protection, Vali-e-Asr University, Rafsanjan, Iran.
Shahnaz
Shahidi Noghabi
Shahnaz
Shahidi Noghabi
100319475328460050870
100319475328460050870
No
Department of Plant Protection, Vali-e-Asr University, Rafsanjan, Iran.
Department of Plant Protection, Vali-e-Asr University, Rafsanjan, Iran.