دور النسبة الجنسية في إنتاجية الطفيل Bracon brevicornis ( Wesm.)

Abstract

The larvae parasite Bracon brevicornis( Wesm.)Were reared at the laboratory on the Ephestia kuehniella (Zell.) during 2008 .The sex ratio ( male: female) at the were : (2:4 ) ,( 4 :2 ) ,(1:2 ) and (1:1) .The ------ has been dun at the 25 C, humidity 60 % at 8 hour light/ day.The result showed significant differences on the average population for male and female productive ,the maximum of pupation average of the male was 11.29 individual at the sex ratio (4:2) and maximum 2 individual at the sex ratio (1 :1) while the maximum of population average of the female was 22.50 individual and the less was 3.25 individual at the sex ratio (2 :2) and ( 2:1) respectively.Also, the average productivity of the parasitoid male and female by considering the sex ratio (1:1) at 20 C , 22C,35C and 45 C and relive humidity 60% at 8 hour light / day .