Diversity and Richness of Xanthoid Crabs (crustacean: superfamily: Xanthoidea) in Intertidal of Hormuz Island, Persion Gulf

This study was done (in summer 2010 to summer 2011) to investigate the diversity, richness, dominance of Xanthoid crabs in intertidal rocky 2010 Shores of Hormoz Island. Samples of crabs were collected from intertidal zones during the low-tide at 3 stations) environmental parameters determinated such as salinity, PH , Solvable O2, temprature and bed gradint and using Correlation`s test of spirman indicated significant differences (p <0.05) with their relation in the xanthoid crab abundance . Also PAST tool using for Computation ecological indices (Margalef, Shannon - Wiener and Simpson). Cluster analysis of the stations led to the recognition of three abundance clusters with the highest Semblance being in spring and autumn. Correlation between ecological indices (Margalef, Shannon - Wiener and Simpson) and the environmental parameters showed significant correlation between salinity and Simpson index. margalef index has studied in three station and season that showed mohitzist statian and winter had higher Species Richness