Contamination with Aerobic Bacteria Accompanying to Seeds of Triticum Aestivum.L that are Stored and Infected with Different Numerical Levels of Rusty Flour Beetle Insect Tribolium. Castaneum (Herbest) Coleoptera: Tenebrionidae

Abstract

         When studying stored grain (Triticum  aestivum) healthy and injured  with numerical levels 5,10,20 apair of whole bugs of an insect Tribolium. castaneum(Herbest) and for two generations it is found that there is aspecific contamination of the following an aerobic  bacterial speciesEscherichia.coli, Pro.mirabili , Klebsiella.pneumonia,Staphloccocus aureaus , S. epidermids , P. aerugenosathis level of quantitative contamination of the above bacterial species differed according to the numerical level of the initial infecation with the insect, where the highest rate tocontamination at the infection level 20 pairs where it was(1225*10³) colony/ g  and lower him at level 5 pair ,where it was (392*10³) colony/ g.

Injured wheat seeds surpassed healthy ones in terms of numbers as it reached the total population of bacterial colonies isolated in the infected wheat (1885)*10³colony/ g , while the total number of colonies on healthy grains (615)*10³ colony/ g .

And the highest rate of bacterial contamination was at the exit of the second generation ,as the rates were (392,883,1225)*10³ colony / g ,for level 5,10,20 pairs of insects respectively.