Life table parameters of the cotton leafworm, spodoptera littoralis (boisd.)(lepidoptera:noctuidae) on different host plants [electronic resource].

Includes references.

Present work is carried out to study the effect of different hot plants on life table parameters of the cotton leafworm Spodoptera littoralis (Boisd.) under laboratory conditions. In this study, development rate. age-specific survival and age and age-specific fecundity for cotton leafworm larvae reared on six host plants: (turnip, bean , corn , castor bean , cowpea and siris ) under laboratory conditions were studied for two successive generations. Results obtained revealed that the cotton leafworm larvae survived on four host plants. but on the fifth host (cowpea). most moths died during first two days after emergence, in the same time on the sixth host (siris), young larvae failed to survive. The remaining four host plants could be arranged according to their suitability for insect development in the following descending order castor bean, bean, corn and turnip. The lowest percentage of natural mortality values occurred 6.01, 5.9, 5.54 and 0.61% when the larvae fed on castor bean leaves for AM, RM, IM and MSR% mortality respectively.

Summary in Arabic.

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