Genetic differentiation can be promoted allopatrically by geographic isolation of populations due to limited dispersal ability and diversification over time or sympatrically through, for example, host-race formation. In crop pests, the trading of crops across the world can lead to intermixing of genetically distinct pest populations. However, our understanding of the importance of allopatric an...

Inbreeding generally reduces male mating activity such that inbred males are less successful in male-male competition. Inbred males can also have smaller accessory glands, transfer less sperm and produce sperm that are less motile, less viable or have a greater frequency of abnormalities, all of which can reduce the fertilization success and fitness of inbred males relative to outbred males. Ho...

Twenty-two cowpea genotypes, comprising eighteen elite lines from the CSIR-Savanna Agricultural Research Institute, and three improved cultivars from the International Institute of Tropical Agriculture were evaluated for their susceptibility to infestation and damage by the storage beetle, Callosobruchus maculatus F. The assessment of their relative susceptibilities was based on oviposition, me...

Baklagil tohum böcekleri maş fasulyesinde önemli ekonomik zarara neden olmaktadır. Bu zararlıya karşı mücadele yapılmaması üründe %100’e varan oranlarda kayıplara Çalışmada da fasulyesi [Vigna radiata (L.) Wilczek] tohumları farklı sayıdaki Callosobruchus maculatus F. (Coleoptera: Chrysomelidae) erginleri ile sürelerde aynı ortamda tutulmuş ve erginlerin beslenme miktarları belirlenmiştir. Daha...

The study investigated the effectiveness of Prosopis africana and Ficus mucoso ethanolic leave extract in control Callosobruchus maculatus infesting cowpea. Treatments were applied at different concentrations (10 %, 30 % , 50 0 %) on Five pairs newly emerged adult C. introduced into each treatment. two botanicals evaluated insecticidal effects it has insect data recorded mortality, oviposition ...

Treating seeds of leguminous crops against bruchuses 20 days before sowing with insecticide dressing agents at the rate consumption Avalanche 70% d. 4 heg / t and Cruiser Extra Cotton 362 c.t., 3 l /t end growing season preserves up to 45-50% yield.