دراسة بعض الصفات البيولوجية للمفترس Cryptolaemus montrouzieri (Mulsant)‎ المدخل على بق الحمضيات الدقيقي Planococcus citri (Risso)‎ في سورية و تحديد كفاءته الافتراسية مخبريا

Abstract EN

Cryptolacmus montrouzieri (Mulsant) introduced to control Planococcus citri (Risso) was reared in Lattakia Center lor Rearing and Application of Natural Enemies.

The study investigated the generation duration under laboratory conditions at (i) temperature of 30±2*C and R 11 75±5% and (ii) 25±1*C and R.II.

of 65±5%, with a light duration of 16 hr.

'Hie generation time was 28.8± 1.48 and 33.8*1.3 days, under the above mentioned conditions, respectively.

Under field conditions during the summer months the generation time reached 30.6±2.3 days.

The average longevity of males and females was 67.4±6.38.

70.6±6.7 days, respectively.

Sex ratio was 48.61 ±9.9% males and 51.39*9.9% females.

Hie percentage of adult emergence was 90.19±2.29%.

Predation rate of the males and females of the predator on the third larval stage of the pest was 37 47±3.51 and 32.89±2.33 larvae/day, respectively, whereas, the predation rate of the predator third instar on the first and second nymphal instars of the pest, was 57 47±4.86 and 30.87±3.76 nymphs/day, respectively.