Vet World Vol.13 December-2020 Article-22
Research Article
Veterinary World, 13(12): 2759-2764
https://doi.org/10.14202/vetworld.2020.2759-2764
Isolation, molecular identification, and pathological lesions of Saprolegnia spp. isolated from common carp, Cyprinus carpio in floating cages in Mosul, Iraq
2. Department of Pathology and poultry diseases, College of Veterinary Medicine, Mosul, Iraq.
3. Department of Internal and Preventive Medicine, College of Veterinary Medicine, Mosul, Iraq.
Background and Aim: Saprolegniasis is a fungal disease that infects freshwater fish. The condition is characterized by a cotton-like appearance in the gills and body. This study aimed to isolate Saprolegnia from common carp, Cyprinus carpio, raised in a floating cage in Wana district, Mosul, Iraq.
Materials and Methods: Samples were collected from 15 infected fish and examined microbiologically, molecularly, and histopathologically. Saprolegnia DNA was extracted which was amplified using universal primers give a 540 bp DNA fragment, and gill and muscle tissue were also examined for histopathological changes.
Results: Isolated colonies of Saprolegnia were characterized by a circular, white cottony appearance with long hair. Lactophenol staining demonstrated hyphae as branched non-septate, transparent masses. The genomic DNA of isolates was consistent with Saprolegnia spp. The infected tissue samples showed variable pathology in gills. Severe hemorrhage and edema were observed in primary gill filaments with hyperplasia in epithelial cells and infusion in secondary gill filaments. Hyphae of Saprolegnia were seen between necrotic and edematous myofiber with inflammatory cells infiltration.
Conclusion: Saprolegnia can cause economic impacts through lethal infection of fish. Clinical signs of Saprolegnia infection were confirmed molecularly and microscopically, and these findings were supported by histopathological lesions in gill and muscle tissues. Keywords: common carp, fungal isolation, histopathological changes, molecular identification, Saprolegnia.
Keywords: common carp, fungal isolation, histopathological changes, molecular identification, Saprolegnia.
How to cite this article: Ali FF, AL-Taee SK, AL-Jumaa ZM (2020) Isolation, molecular identification, and pathological lesions of Saprolegnia spp. isolated from common carp, Cyprinus carpio in floating cages in Mosul, Iraq, Veterinary World, 13(12): 2759-2764.
Received: 19-07-2020 Accepted: 05-11-2020 Published online: 24-12-2020
Corresponding author: Fawwaz Fadhil Ali E-mail: fawwaz@ntu.edu.iq
DOI: 10.14202/vetworld.2020.2759-2764
Copyright: Ali, et al. This article is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http:// creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.