Journal of Crop Protection
Journal of Crop Protection
JCP
Agriculture
http://jcp.modares.ac.ir
1
admin
2251-9041
2251-905X
en
jalali
1393
9
1
gregorian
2014
12
1
3
4
online
1
fulltext
en
Impact of pyriproxyfen and methoxyfenozide on hemocytes of the Mediterranean flour moth, Ephestia kuehniella (Lepidoptera: Pyralidae)
The Mediterranean flour moth, <em>Ephestia kuehniella</em> Zeller, is one of the major pests in stored products worldwide. Several problems assossiated with the use of conventional insecticides have strongly demonstrated the need for applying alternative safe compounds such as insect growth regulators (IGRs). In the present study, growth regulating activity and hematological effects of pyriproxifen and methoxyfenozide were evaluated on <em>E. kuehniella </em>larvae. Effects of the insecticides were evaluated under laboratory conditions set at 26 ± 1 °C and 75% RH. Findings indicated that inhibition dose for fifty percent of population (ID<sub>50</sub>) was equal to 0.16 µg/mg larvae for pyriproxifen and 0.4 µg/mg larvae for methoxyfenozide, showing the considerable growth regulating effect on two-day-old fifth instar larvae. Then, influence of estimated doses were investigated on the insect hemocytes including total hemocyte count (THC) and differential hemocyte count (DHC). THC and the proportion of plasmatocytes were decreased as pyriproxifen doses increased, while, the granulocytes level was increased. In contrast, application of sublethal doses of methoxyfenozide caused a conciderable increase in THC and the plasmatocytes density, while, number of granulocytes was decreased. Since the total number of hemocytes and the proportion of plasmatocytes are very crucial in immune responses of insects, pyriproxifen could be used as an immunosuppressive pesticide in integrated control of <em>E. kuehniella</em>.
IGRS,Total hemocyte count,Differential hemocyte count,Plasmatocyte,Granulocyte
449
458
http://jcp.modares.ac.ir/browse.php?a_code=A-3-1000-9297&slc_lang=en&sid=3
Vahid
Ghasemi
Vahid
Ghasemi
100319475328460042991
100319475328460042991
No
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
Saeid
Moharramipour
Saeid
Moharramipour
100319475328460042990
100319475328460042990
Yes
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
Jalal
Jalali Sendi
Jalal
Jalali Sendi
100319475328460042191
100319475328460042191
No
Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran.
Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran.