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Abstract

On the insect fauna and their diseases in several old mills in Kosova County, Yugoslavia.

Abstract

In the course of regular surveys carried out in 11 old mills in the mountain area of Kosova County, Yugoslavia, the author found 8 stored-product insects, the population densities of which were influenced by 6 predators, 5 parasites and 12 pathogens; the pests included Ephestia kuehniella Zell., Tribolium castaneum (Hbst.), T. confusum Duv., Tenebrio molitor L., Tenebroides mauritanicus (L.), Sitophilus granarius (L.) (Calandra granaria), S. oryzae (L.) (C. oryzae) and Rhyzopertha dominica (F.). The pathogens Mattesia dispora, Farinocystis tribolii and Adelina tribolii are described in detail with regard to their morphology and disease symptoms produced in their hosts. It was thought to be of special interest that these studies on the host-parasite relationships were made in localities where chemical insecticides had never been used, so that the density-regulating factors acted under more or less natural conditions.<new para>ADDITIONAL ABSTRACT:<new para>In the course of regular surveys carried out in 11 old mills in the mountain area of Kosova County, Yugoslavia, the author found 8 stored-product insects, the population densities of which were influenced by 6 predators, 5 parasites and 12 pathogens. The pathogens Mattesia dispora, Farinocystis tribolii and Adelina tribolii are described in detail with regard to their morphology and disease symptoms produced in their hosts. These studies on the host-parasite relationships were made in localities where chemical insecticides had never been used, so that the density-regulating factors acted under more or less natural conditions.