| Titles |
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English :
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Effect of two neem commercial products and mint oil on some biological aspects of the egg parasitoid, Trichogramma evanescens west. (Hymenoptera: Trichogrammatidae) when reared on Pectinophora gossypiella (Saunders) eggs
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| Abstract |
Two natural products named NeemAzal T/S 1% and Neemix 4.5% (commercial products of Neem plant, Azadirachta indica), and Mint oil (a commercial product from Spearmint plant, Mintha sativd) were evaluated in the laboratory for their effects on the hatchability percentage of Pectinophora gossypiella eggs, and were tested for oviposition deterrence, feeding deterrence, toxicity, sterility effects against the egg parasitoid, Trichogramma evanescens. Mint oil was more effective against pink bollworm eggs, as it caused mortality of eggs estimated by 83.14%, followed by Neemix (72.32%), where as, NeemAzal was the less effective one (65.91%). Where as, the effect on the parasitoid was significantly different, as the less effective one on the pest was the harmful one on the parasitoid. No sterility effect was observed when the parasitoid was fed on sucrose solution mixed with the tested products, where as the number of parasitized eggs decreased from 226.8 eggs/5 females to 118, 126 and 143 eggs/5 females when the parasitoid fed on sucrose solution mixed with NeemAzal, Neemix and mint oil, respectively. The sensitivity of the parasitoid to these products varied considerably under both choice and no-choice conditions. The pretreatment of host eggs showed no adverse effects on the development of the parasitoid, however, pretreatment of the host egg with NeemAzal and Neemix decreased fecundity of emerged females to 41 and 43.2 individuals/female, respectively. In feeding toxicity, females were affected more than males, but in contact toxicity, males were affected more than females except for the treatment with NeemAzal, as it caused 48% mortality to females.
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| Publication year |
2006
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| Pages |
33-45
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| Availability location |
معهد بحوث وقاية النباتات
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| Availability number |
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| Organization Name |
Plant Protection Research Institute (PPRI)
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| City |
القاهرة
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| serial title |
مجله الجمعية المصرية لعلم الحشرات
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| ISSN |
1110-0885
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| Author(s) from ARC |
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| Agris Categories |
Pests of plants
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AGROVOC
TERMS |
Azadirachta indica.
Azadirachtin.
Pectinophora gossypiella.
Trichogramma evanescens.
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| Publication Type |
Journal
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