Effect of Temperature and Host Density on Some Characteristics of The Ectoparasitoid Bracon brevecornis (Walker) (Hymenoptera: Braconidae)

Document Type : Original Article


1 Economic Entomology & Agricultural Zoology Dept., Faculty of Agriculture, Menoufia University, Menoufia, Egypt

2 Economic Entomology and Agriculture Zoology Department, Faculty of Agriculture, Menoufia University


The present work was carried out to study the effect of exposure to different temperatures of 15, 20,25,30 and 35˚C and different host densities of 2, 4, 6, 8 and 10 larvae of the host on some biological aspect of Bracon brevicornis (Walker) (Hymenoptera: Braconidae)adult femaleswhen reared on Ephestia kuehniella full-grown larvae. Results indicated that exposure to different temperatures had a significant effect on pre-oviposition, oviposition, post-oviposition and longevity periods of an adult female, As the shortening of these periods was observed with a high temperature and vice versa. Also, a significant effect of temperatures on parasitism % and eggs laid / female were found. The obtained results showed an insignificant effect of host densities on biological aspects of an adult female of B. brevicornis, except in the case of Parasitism % and eggs laid /female.