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Journal of Entomology
Year: 2016  |  Volume: 13  |  Issue: 3  |  Page No.: 55 - 71

Impact of Cement Dust on the Testis of Tachyderma hispida (Forskal, 1775) (Coleoptra: Tenebrionidae), Inhabiting Mariout Region (Alexandria, Egypt)

Dalia Abel-Moneim Kheirallah, Zeinab Ahmed El-Moaty and Doha Ahmed El-Gendy    

Abstract: The present study aimed to evaluate the possible hazards resulting from cement dust factory established in Mariout region West of Alexandria on Mediterranean coast. Two uncultivated sites were chosen for sampling the coleopterous insect Trachyderma hispida. The first site is situated at Burg El-Arab city, which is the reference site and the second site was at El-Hammam city which is situated in the vicinity of a cement factory and considered as the polluted site. The study was planned to monitor the bioaccumulation of metal (copper (Cu), lead (Pb) cobalt (Co) zinc (Zn) cadmium (Cd) chromium (Cr)) in soil, leaf litter and soft tissues of T. hispida from the selected sites which revealed a significant increase in metals concentration in the polluted site (El-Hammam city) than in the less polluted site (Burg El-Arab city). Many alterations of the general architecture of the testis were pronounced. Determination of histopathological features revealed disruption and damage for the normal cellular organization. Shrunk of seminiferous follicles, rupture of cyst walls, decreased number of cysts per follicles and decreased number of sperms per cysts were observed. Ultrastructural changes in testes of insects illustrate spermatogenesis disruptions and implied numerous abnormalities in the nucleus and cytoplasm. So, T. hispida can serve as biomonitoring of trace metals in polluted air, which leads to identification of hazardous exposures before adverse effects appear as potential risk to humans.

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