| Titles |
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Arabic :
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Egyptian cotton leafworm Spodoptera littoralis development on artificial diet in relation to heat units requirements
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Arabic :
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تطور دودة ورق القطن المصرية على البيئة الصناعية وعلاقتها بالوحدات الحرارية المتراكمة
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| Abstract |
The present work was carried out under four constant temperatures (i.e. 20, 25, 30 and 35°C) when the Egyptian cotton leafworm Spodoptera littoralis (Boisd.) larvae, where fed on artificial diet. The time required for embryogensis, larval duration, pupal duration and adult longevity decreased as the temperatures increased from 20 to 35°C.The lower thresholds of development (to) were 11.86, 7.69, 12.34 and 10.66 °C for egg, larvae, pupae and pre-oviposition periods, respectively. The average of accumulated heat units required for development as 53.2, 314.7, 155.8 and 27.5 degree-days for egg, larvae, pupae and pre-oviposition period, respectively. The lower threshold of development (to) for S. littoralis when fed on artificial diet to complete the generation was 10.3 °C. The average accumulated heat units required for the generation was 537.2 degree-days .The kind of food had non-significant on heat units requirements
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| Publication year |
2005
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| Pages |
199-209
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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 |
المجلة المصرية للبحوث الزراعية
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| ISSN |
1110-6336
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| Author(s) from ARC |
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| Agris Categories |
Pests of plants
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AGROVOC
TERMS |
Developmental stages.
Spodoptera littoralis.
Temperature.
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| Publication Type |
Journal
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