1. Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P. O. Box 84428, Riyadh 11671, Saudi Arabia
2. Department of Zoology, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
3. Department of Chemistry, King Abdulaziz University, P. O. Box 80203, Jeddah, Saudi Arabia