Previous research showed that exposure to ginger root, Zingiber officinale Roscoe, oil increased the mating success of mass-reared, sterile males of the Mediterranean fruit ßy, Ceratitis capitata (Wiedemann). This work, however, involved the exposure of small groups of males (n 25) in small containers (volume 400 ml). Several sterile male release programs use plastic adult rearing containers (s...

Recent populations of the red sunflower seed weevil, Smicronyx fulvus LeConte (Coleoptera: Curculionidae), have been inconsistent or declining, particularly in North Dakota. Consequently, research on weevil biology, including development of resistant germplasm, has been limited. To determine whether cold storage of diapausing larvae could be improved, nonconstant temperature treatments (fluctua...

Malaria and filariases are prevalent in Sudan and their control depends largely on preventive measures against mosquito vectors. The present work aimed to investigate the larvicidal, adults emergence inhibition and oviposition deterrent effects of aqueous extracts from leaves of Ricinus communis L. against the mosquitoes, Anopheles arabiensis and Culex quinquefasciatus as a biological control m...

Superparasitism (multiple parasites in a single host) is one of the most significant examples density-dependent intraspecific competition among insect parasitoids. In this study, we showed that multiple parasitism by Blissoxenos esakii (Insecta, Strepsiptera) induce earlier adult emergence than solitary (single parasite host). creates conditions wherein strepsipteran larvae must compete for lim...

Auditory neurons in the superior colliculus (SC) respond preferentially to sounds from restricted directions to form a map of auditory space. The development of this representation is shaped by sensory experience, but little is known about the relative contribution of peripheral and central factors to the emergence of adult responses. By recording from the SC of anesthetized ferrets at differen...