the flour moth, ephestia kuehniella zeller and indianmeal moth, plodia interpunctella (hubner) are reported as important pests of stored products in many countries throughout the world. in recent years harobracon hebetor (say) wasp has been employed as a biological control agent of the moths' larvae in peanut warehouses as well as in packaged cereal products. in this study the functional r...

background: echinococcus granulosus , a zoonotic cestode parasite, causative agent of hydatid cyst is endemic in many parts of the world including the middle east. study on different aspects of this parasite is very important and valuable. however, working with adult worms which their habitat situated in the small intestine of canids, is dangerous and risky. achieving such risky situa­tion need...

it has been hypothesized that the survival, development, fecundity and population of insects are affected significantly by high temperatures. the diamondback moth, plutella xylostell (l.) (lepidoptera: plutellidae), is a serious and economically important pest of cruciferous crops throughout the word. in this research, the adult longevity and fecundity of p. xylostella were studied in laborator...

Received January 16, 1961 A LTHOUGH the irradiation of Drosophila results in more crossover off spring, it has not been demonstrated that this effect has its origin in meiosis (WHITTINGHILL 1955) rather than in gonia1 exchange. Hence it is appropriate to irradiate specimens or stages which may have only oijgonia rather than the mixture of gonia and gametocytes carried by adults. Previous experi...

rearing methods for bracon hebetor (say) (hym., braconidae) were investigated in the series of laboratory experiments designed to enhance the yield of the mass rearing of this parasitoid for biological control of lepidopteran field and stored product pests. in these experiments, the effects of parasitoid and host densities on fertility and sex ratio of b. hebetor were assessed. in parasitoid de...

beet armyworm (spodoptera exigua (hubner)) (lepidoptera: noctuidae) is the most economically important sugar beet (beta vulgaris) pest worldwide. the main control method of this pest is insecticides use. thus, it is important to develop alternative means of controlling this pest, including host plant resistance using plant lectins. in the current study, the effects of gna (galanthus nivalis agg...