Yassir Sulieman -1, Randa E. Eltayeb -1, Theerakamol Pengsakul-2
1. Dept. of Zoology, Faculty of Science and Technology, University of Shendi, Shendi, Sudan,* email@example.com
2. Faculty of Medical Technology, Prince of Songkla University, Hat Yai, Songkhla, Thailand
Schistosomiasis intermediate-hosts, snails, are usually surface dwellers of different type of freshwater
bodies and their geographical distribution and population dynamics may be influenced by many
factors such as temperature, oxygen dissolved in water, flooding and desiccation. In this study, we
interested in temperture, rainfall, light, turbidity, dissolved oxygen and heavy metal ions, calcium and
Keywords: Snails, schistosomes, abiotic factors.