1. Parasitology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
2. Department of Veterinary Hygiene and Management; Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
3. Department of Aquatic Animal Medicine and Management, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
4. Department of Zoology and Agricultural Nematology, Faculty of Agriculture, Cairo University, Giza, Egypt
5. Department of Microbiology, College of Veterinary Medicine, King Faisal University, Al-Ahsa, Saudi Arabia