Terrestrial Isopoda Species In Al-jadiriyah District / Baghdad / Iraq

Abstract

The study included current diagnosis of four species of terrestrial isopoda , a Porcellio spinicornis , Porcellio scaber , Procellionides pruinosus and Armadillidium vulgare in the Jadiriyah in Baghdad, samples were collected monthly at the rate of ten replicates using the quadrate side length of 25 cm for the period from November 2007 to November 2008. Current study showed that the population density ranged species P. spinicornis , P. scaber , Procellionides pruinosus and A. vulgare between 891 individual / m 2 through May 2008, 148 individual / m 2 during January 2008 and between 781 individual / m 2 in October 2008 and 220 individual / m 2 in January 2008 and the 783 individual / m 2 during September 2008 and 176 individual / m 2 during August 2008 and the 880 individual / m 2 in May 2008 and 251 individual / m 2 in January 2008, respectively. In about a year, showed rates of four types of density varies considerably during the months of study, and those rates were high during the spring and autumn and low during the winter and summer