Enany, M., Eidaroos, N., Eltamimy, N. (2019). Microbial Causes of Summer Mortality in Farmed Fish in Egypt. test, 24(1), 45-56. doi: 10.21608/scvmj.2019.59198
Mohamed Enany; Nada Eidaroos; N. Eltamimy. "Microbial Causes of Summer Mortality in Farmed Fish in Egypt". test, 24, 1, 2019, 45-56. doi: 10.21608/scvmj.2019.59198
Enany, M., Eidaroos, N., Eltamimy, N. (2019). 'Microbial Causes of Summer Mortality in Farmed Fish in Egypt', test, 24(1), pp. 45-56. doi: 10.21608/scvmj.2019.59198
Enany, M., Eidaroos, N., Eltamimy, N. Microbial Causes of Summer Mortality in Farmed Fish in Egypt. test, 2019; 24(1): 45-56. doi: 10.21608/scvmj.2019.59198

Microbial Causes of Summer Mortality in Farmed Fish in Egypt

Suez Canal Veterinary Medical Journal. SCVMJ
Article 5, Volume 24, Issue 1, June 2019, Pages 45-56    PDF (391.24 K)
Document Type: Original Article
DOI: 10.21608/scvmj.2019.59198
Authors
Mohamed Enany1; Nada Eidaroos2; N. Eltamimy3
1Bacteriology, Immunology and Mycology Department Faculty of Veterinary Medicine, Suez Canal University
2Bacteriology, Immunology and Mycology Department Faculty of Veterinary Medicine, Suez Canal University.
3Central laboratory for Aquaculture Research. Abbassa, Abou Hammad, Sharkia
Abstract
Bacterial diseases are responsible for sever mortalities and morbidities in cultured Nile tilapia in Egypt in various fresh water fish farms and the increase of water temperature in summer has a significant effect on mortalities. A total number of 100 clinically diseased Nile Tilapia (Orechromis niloticus) were collected alive randomly from Abbassa, Elsharkia (Central Laboratory for Aquaculture Research) Egypt, to identify the bacterial pathogens affect that fish. Samples were isolated from liver, kidney, spleen, eye, ulcer and brain.  The isolated fish pathogens were identified as Aeromonas hydrophila,  Ps.fluorescense,  Ps.putida and V.cholera by their morphological characteristics, biochemical tests, Antibiotic sensitivity test and polymerase chain reaction test as a confirmatory results. The results of Anmicrobial sensitivity of the isolated strains revealed that tetracycline  (TE30), oxytetracycline (T30), nalidixic acid (NA30), norfloxacin (NOR10) and sulpha-Trimethoprim (SXT25) were the drugs of choice against Aeromonas hydrophila, tetracycline (TE30),oxytetracycline (T30), tobramicin (TOB10) and kanamycin (K30) were the drugs of choice against Pseudomonas flurocence, streptomycin (S10), tobramicin (TOB10), and kanamycin (K30) were the drugs of choice against Pseudomonas putida While oxytetracycline (T30) and nalidixic acid (NA30) were the drugs of choice against Vibrio cholera. The results of Polymerase Chain Reaction (PCR) confirmed the antibiotic sensitivity test results and also confirmed the incidence of Aeromonas hydrophila, Pseudomonas flurocence and Vibrio cholera in the infected fish.
Keywords
Microbial Causes; Summer Mortality; Farmed Fish
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