Effect of different constant temperature and photoperiods on some biological aspects of chrysoperla carnes (stephens) (neuroptera:chrysopidae) reared on cowpea aphid, aphiscraccivora koch [electronic resource].

Includes references.

Two experiments were carried out to evaluate the effect of three constant temperatures (20, 25 and 30°C) and the influence of three photoperiods (14110.12/12 and 10114 h. UD) on the larval, pupal duration period and predation capacity of Chrysoperla camea reared on Aphis can::civora. In the 1" experiment the obtained resu~s showed that increasing of temperature resu~ed in decreasing in both larval and pupal durations period and reducing in the total numbers of consumed preys (A. carccivora). Results obtained in the 2nd experiment proved that the long larval duration was at long photoperiod 14/10 h. UD). To the contrary, the highest numberd of consumed prey by C. cameuwas achieved under short day (10/14 h. UD).

Summary in Arabic.

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