Aly, S., Mansour, S., Thabet, R. (2018). Pathology and Molecular Diagnosis of White Spot Syndrome Virus (WSSV) among Vannamei Shrimp in Egypt. Suez Canal Veterinary Medical Journal. SCVMJ, 23(2), 127-142. doi: 10.21608/scvmj.2018.60485
Salah Aly; Shimaa Mansour; Randa Thabet. "Pathology and Molecular Diagnosis of White Spot Syndrome Virus (WSSV) among Vannamei Shrimp in Egypt". Suez Canal Veterinary Medical Journal. SCVMJ, 23, 2, 2018, 127-142. doi: 10.21608/scvmj.2018.60485
Aly, S., Mansour, S., Thabet, R. (2018). 'Pathology and Molecular Diagnosis of White Spot Syndrome Virus (WSSV) among Vannamei Shrimp in Egypt', Suez Canal Veterinary Medical Journal. SCVMJ, 23(2), pp. 127-142. doi: 10.21608/scvmj.2018.60485
Aly, S., Mansour, S., Thabet, R. Pathology and Molecular Diagnosis of White Spot Syndrome Virus (WSSV) among Vannamei Shrimp in Egypt. Suez Canal Veterinary Medical Journal. SCVMJ, 2018; 23(2): 127-142. doi: 10.21608/scvmj.2018.60485
Pathology and Molecular Diagnosis of White Spot Syndrome Virus (WSSV) among Vannamei Shrimp in Egypt
1Department of Pathology, Faculty of Veterinary Medicine, Suez Canal University
2Department of Virology, Faculty of Veterinary Medicine, Zagazig University
3Department of Aquaculture Diseases Control, Fish Farming and Technology Institute, Suez Canal University
Abstract
White spot syndrome virus (WSSV) is poorly understood as no available information regarding its possible spread among shrimp cultured in Egypt. Therefore, this work aimed to diagnose WSSV in cultured shrimp by pathological examination and molecular based methods (PCR). A total of 20 shrimp samples were collected from shrimp farms in Egypt. Diseased shrimps exhibited sudden mass mortalities and showed loose cuticle with numerous scattered melanised visible white spots on external surface. Histopathological examination revealed nuclear hypertrophy with eosinophilic (Cowdry A inclusion) to basophilic inclusions in the internal organs (connective tissues). Spheroids were observed in the lymphoid tissues. Cell encapsulation was accompanied by pyknosis and karyorrhexis. PCR results with primers specific for WSSV gave a predicted amplified product at 414 bp fragments using agarose gel electrophoresis. The present findings request more investigations for White spot syndrome virus disease among shrimp in Egyptian farms and recommend the establishment of preventive measures against this virus in Egypt.
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