Threshold temperatures and thermal requirements of the lesser cotton leafworm Spodoptera Exigua Hb.
Abstract: SUMMARY
The present investigation aimed to study the effect of three constant temperatures (20, 25, and 30°C) on the developmental rates of different stages of the lesser cotton leafworm Spodoptera exigua. The incubation period, larval duration, pupal duration, pre-oviposition period and duration of generation were estimated. The time required for development was decreased as the temperature increased. The threshold temperatures were 13.15°C for egg, 9.64 °C for larvae, 11.07 °C for pupae 9.64°C for pre-oviposition period and 10.67 °C for generation. The average thermal requirements needed for completing the development were 36.0, 196.1, 111.29, 29.06 and 368.3 degree-days for egg, larvae, pupae, pre-oviposition period and generation, respectively.
Publication year 2006
Pages 271-281
Availability location معهد بحوث وقاية النباتات
Availability number
Organization Name
City القاهرة
serial title مجله الجمعية المصرية لعلم الحشرات
ISSN 1110-7162
Author(s) from ARC
Agris Categories Pests of plants
AGROVOC
TERMS		 Growth rate. Spodoptera exigua. Temperature.
Publication Type Journal
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