| Titles |
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English :
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Biological and histological effects of spinosad on spodoptera littoralis (bois)
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Arabic :
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التأثيرات البيولوجية والنسيجية لمركب السبينوساد على دودة ورق القطن اسبودبتر اليتوراليس.
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| Abstract |
The efficiency of Spinosad was evaluated on larvae of the Egyptian. cotton leaf worm, Spodoptera littoralis (Boisd): (Lepidoptera: Noctuidae). Second instar larvae were more sensitive to Spinosad than 4"' instar larvae, as denoted by the determined LC50 which was 5.73 and 7.83 ppm for 2"° and 4°' instars, respectively. Meanwhile, LC50 was 37.15 and 43.49 ppm for the respectively mentioned instars compared to their control. The duration of treated larvae was lengthened when either instars larvae were treated as compared to their control. Furthermore, percentage of pupation was reduced than the control by 51.03 and 49.5°h when 2n" and 4`" instar larvae were treated with LC50 of Spinosad, respectively. Adult emergence was insignificantly affected as it was less than the control by 5.3 and 4.1 % to the respective mentioned treated larval instars. The number of laid eggs was insignificantly affected; however, percentage hatchability was markedly reduced. The total protein content in larvae treated as 4`" instar showed a gradual increase from 2"° and 6"' days after treatment as it was 34.79- 35.18 mg respectively, compared with 25.8 to 26.5 mg in control. The midgut tissue of 5`" instar larvae treated in the 4`" instar larvae with LC5o of Spinosad showed some alternations and several aberration in some cell organelle such mitochondria, nucleolus, microvilli and golgi apparatus as observed by light and electron microscope.
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| Publication year |
2007
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| Pages |
10497-10510
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| Availability location |
معهد بحوث وقاية النباتات - ش نادى الصيد - الدقى - الجيزة
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| Availability number |
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| Organization Name |
Plant Protection Research Institute (PPRI)
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| City |
المنصورة
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| serial title |
مجلة جامعة المنصورة للعلوم الزراعية
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| ISSN |
1110-0346
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| Author(s) from ARC |
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| External authors (outside ARC) |
فائزة مرعى احمد مرعى
قسم وقاية النبات-كلية الزراعة جامعة عين شمس
لطفى عبد الحميد يوسف
قسم وقاية النبات-كلية الزراعة جامعة عين شمس
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| Agris Categories |
Protection of plants - General aspects
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AGROVOC
TERMS |
Biological control.
Nucleus.
Protein content.
Spodoptera littoralis.
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| Publication Type |
Journal
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