Prevalence and Histopathological Studies of Trichodina spp. Infecting Oreochromis niloticus in Behera Governorate, Egypt
Khallaf, M., El-Bahrawy, A., Awad, A., Elkhatam, A. (2020). Prevalence and Histopathological Studies of Trichodina spp. Infecting Oreochromis niloticus in Behera Governorate, Egypt. EKB Journal Management System, 2(1), 1-7. doi: 10.21608/jcvr.2020.90213
Mohamed Abdalla Khallaf; Amanallah El-Bahrawy; Abeer Awad; Ahmed Elkhatam. "Prevalence and Histopathological Studies of Trichodina spp. Infecting Oreochromis niloticus in Behera Governorate, Egypt". EKB Journal Management System, 2, 1, 2020, 1-7. doi: 10.21608/jcvr.2020.90213
Khallaf, M., El-Bahrawy, A., Awad, A., Elkhatam, A. (2020). 'Prevalence and Histopathological Studies of Trichodina spp. Infecting Oreochromis niloticus in Behera Governorate, Egypt', EKB Journal Management System, 2(1), pp. 1-7. doi: 10.21608/jcvr.2020.90213
Khallaf, M., El-Bahrawy, A., Awad, A., Elkhatam, A. Prevalence and Histopathological Studies of Trichodina spp. Infecting Oreochromis niloticus in Behera Governorate, Egypt. EKB Journal Management System, 2020; 2(1): 1-7. doi: 10.21608/jcvr.2020.90213

Prevalence and Histopathological Studies of Trichodina spp. Infecting Oreochromis niloticus in Behera Governorate, Egypt

Journal of Current Veterinary Research
Article 1, Volume 2, Issue 1, April 2020, Page 1-7  XML PDF (641.87 K)
Document Type: Original Article
DOI: 10.21608/jcvr.2020.90213
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Authors
Mohamed Abdalla Khallaf email orcid 1; Amanallah El-Bahrawy2; Abeer Awad3; Ahmed Elkhatam4
1Department of Aquatic Animals Medicine and Management, Faculty of Veterinary Medicine, University of Sadat City, Sadat City 32511, Egypt
2Department of Veterinary Pathology, Faculty of Veterinary Medicine, University of Sadat City, Sadat City 32511, Egypt
3Department of Aquatic Animals Medicine and Management, Faculty of Veterinary Medicine, University of Sadat City, Sadat City 32511, Egypt
4Department of Parasitology, Faculty of Veterinary Medicine, University of Sadat City, Sadat City 32511, Egypt
Abstract
Trichodinids are commensal ectoparasitic protozoa, having direct life cycle and may become pathogenic hindering with respiration and feeding of fishes. The study aimed to determine the seasonal dynamics of Trichodina spp. infecting Oreochromis niloticus and their Histopathological effects. Microscopic examination of gills of 747 Tilapia at different localities of Behera province, Egypt was carried out all over one year extended from January to December 2019. The Histopathological examination of infected gills was performed. The results showed that, the prevalence of Trichodina spp. was 4.36%. The locality and weights of examined fish had no significance on the occurrence of Trichodina spp. The infection rate was affected significantly by the season. The highest infection was recorded in autumn whereas the lowest infection was in summer. Moreover, the measurements and morphological description of recovered Trichodina spp. were reported. Trichodina spp. appeared as multiple ring-shaped structures attached to the supporting gill structure and surrounded by few inflammatory cells and there was congestion, fusion, thickening and distortion of gills secondary lamellae.

Keywords
Histopathology; Oreochromis niloticus; Prevalence; Trichodina
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