n African Entomology - Feeding behaviour of the potential predators of the house flies, L. and (L.) (Diptera : Muscidae)




Laboratory experiments on the feeding preferences of the potential predators of L. and (L.) indicated that (Gravenhorst) consumed all immature stages of while (Erichson), (Paykull), (Gravenhorst), (Panzer) and (Scopoli) fed on the eggs and first instar larvae of . The predators could be important in the natural control of house flies. Predation rates at a range of predator densities varied considerably within and between species. Predation rates of decreased with an increase in predator density. Adult starved for nine days consumed significantly more immatures than those fed for nine days. Starvation and feeding treatments had no effect on the predation rate of . The high numbers of eggs and young larvae consumed by and indicate that these two species have considerable potential for the biological control through augmentative releases against house flies breeding in poultry manure.


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