Studies on epizootic microsporidiosis in wild dusky grouper(Epinephelus guaza) from Mediterranean sea at Matrouh Governorate, Egypt
Marzouk1, M., Anter, O., Ali, M., Mahmaud, M., Kenawy, A. (2010). Studies on epizootic microsporidiosis in wild dusky grouper(Epinephelus guaza) from Mediterranean sea at Matrouh Governorate, Egypt. EKB Journal Management System, 14(1), 1-12. doi: 10.21608/ejabf.2010.2048
Mohamed Marzouk1; Olfat Anter; Mohamed Ali; Mahmoud Mahmaud; Amany Kenawy. "Studies on epizootic microsporidiosis in wild dusky grouper(Epinephelus guaza) from Mediterranean sea at Matrouh Governorate, Egypt". EKB Journal Management System, 14, 1, 2010, 1-12. doi: 10.21608/ejabf.2010.2048
Marzouk1, M., Anter, O., Ali, M., Mahmaud, M., Kenawy, A. (2010). 'Studies on epizootic microsporidiosis in wild dusky grouper(Epinephelus guaza) from Mediterranean sea at Matrouh Governorate, Egypt', EKB Journal Management System, 14(1), pp. 1-12. doi: 10.21608/ejabf.2010.2048
Marzouk1, M., Anter, O., Ali, M., Mahmaud, M., Kenawy, A. Studies on epizootic microsporidiosis in wild dusky grouper(Epinephelus guaza) from Mediterranean sea at Matrouh Governorate, Egypt. EKB Journal Management System, 2010; 14(1): 1-12. doi: 10.21608/ejabf.2010.2048

Studies on epizootic microsporidiosis in wild dusky grouper(Epinephelus guaza) from Mediterranean sea at Matrouh Governorate, Egypt

Egyptian Journal of Aquatic Biology and Fisheries
Article 1, Volume 14, Issue 1, January 2010, Page 1-12  XML PDF (245.67 K)
Document Type: Original Article
DOI: 10.21608/ejabf.2010.2048
View on SCiNiTO View on SCiNiTO
Authors
Mohamed Marzouk11; Olfat Anter1; Mohamed Ali1; Mahmoud Mahmaud1; Amany Kenawy2
1Faculty of Veterinary Medicine, Cairo University
2National Reasearch Center, Dokki, Gizza, Egypt
Abstract
This study was carried out on 476 wild marine Dusky Grouper (Epinephelus guaza), captured from the West North shore of Mediterranean Sea at Matrouh Governorate from Sept. 2005 to Sept. 2006. The total prevalence of microsporidia among wild Epinephelus guaza fish was found to be 301 (63.23 %). The investigated fish, revealed the presence of cyst-like nodules ( xenomas, 2-4 mm. in diameter) in the gill arches. Each gill arch was infected with (1-5)
xenomas and up to 30 nodules per fish. The recovered spores of Glugea anomala appeared as thick walled, uni-nucleated, pear-oval in shape with large vacuole. They measured (3-4 μm) in width and (5-6 μm) in length. The highest
prevalence (82.9%) was recorded in summer, while the lowest one (30.33%) was recorded in winter. Presently, the highest infection rate (88.8%) with Glugea anomala was recorded among fish with 200-250g body weight, while
the lowest one (43.3%) was recorded among fish of 100-150g body weight. The main histopathological alteration in gills was destruction of gill filaments with degenerative changes and infiltration of mononuclear leukocytes. The water
parameters revealed the highest pH (7.3), chloride value (240 mg/L) and the total hardness (290 mg/L) in summer, while the lowest pH (5.7) and the total hardness (217mg/L) were recorded in winter, but the lowest chloride value (122
mg/L) was recorded in autumn.
Keywords
Dusky grouper; Epinephelus guaza; epizootic microsporidiosis; Mediterranean Sea; Matrouh; Egypt
Statistics
Article View: 364
PDF Download: 556