E-ISSN 2536-9520 | ISSN 1110-2047
 
2024, Vol: 83
83Current Volume Online First Archive Aims and Scope Abstracting & Indexing Most Accessed Articles Most Downloaded Articles Most Cited Articles

Original Article 


Isolation and Molecular Characterization of Some Bacteria Implicated in the Seasonal Summer Mortalities of Farm-raised Oreochromis niloticus at Kafr El-Sheikh and Dakahlia Governorates

Marwa Abd El-Kader, Tarek Mahmoud Mousa-Balabel.


Abstract
In the last years, there were some bacterial outbreaks occurred during the summer season of farm-raised Oreochromis niloticus at Kafr El-Sheikh and Dakahlia Governorates resulting in high fish mortalities and severe economic losses in these farms. So, this study aimed to detect the causes of the summer fish mortalities in these governorates to facilitate the diagnosis methods of study pathogens. Thirty fish farms were surveyed (20 in Kafr El-Sheikh and 10 in Dakahlia). 150 examined diseased fish (five from each farm) were succumbed for bacteriological isolation and biochemical and molecular identification. LD50 experiments were done to detect the infectivity and pathogenicity of some strains of bacterial isolates. The obtained results cleared that O. niloticus summer mortalities were caused by mixed infections with different bacterial species. The isolated bacterial species were 9 types of bacteria; 7 gram negative bacteria; 78 (30.5%) Aeromonas hydrophila, 52 (20.3%) Pseudomonas aeruoginosa, 40 (15.6%) Vibrio anguillarum, 20 (7.8%) Ewardsiella tarda, 12 (4.7%) Ewardsiella ictulari, 10 (3.9%) Pseudomonas flourescence, 7 (2.7%) Flavobacterium columnare and 2 gram positive bacteria; 30 (11.7%) Streptococcus agalactia and 7 (2.8) Enterococcus feacalis which were the most prevalent bacteria affecting fish farms and implicated in the O. niloticus seasonal summer mortalities and LD50 experiments confirmed the pathogenicity of some isolated bacteria. From the obtained results, it could be concluded that, the main cause of summer fish mortalities in studied farms was 81.82% gram negative bacteria and 18.18% was gram positive bacteria.

Key words: Infectivity, LD50, Oreochromis niloticus, summer mortalities.


 
ARTICLE TOOLS
Abstract
How to cite this articleHow to cite this article
Citation Tools
Related Records
 Articles by Marwa Abd El-Kader
Articles by Tarek Mahmoud Mousa-Balabel
on Google
on Google Scholar


How to Cite this Article
Pubmed Style

Marwa Abd El-Kader, Tarek Mahmoud Mousa-Balabel. Isolation and Molecular Characterization of Some Bacteria Implicated in the Seasonal Summer Mortalities of Farm-raised Oreochromis niloticus at Kafr El-Sheikh and Dakahlia Governorates. AJVS. 0; 0(0): -. doi:10.5455/ajvs.265631

Web Style

Marwa Abd El-Kader, Tarek Mahmoud Mousa-Balabel. Isolation and Molecular Characterization of Some Bacteria Implicated in the Seasonal Summer Mortalities of Farm-raised Oreochromis niloticus at Kafr El-Sheikh and Dakahlia Governorates. https://www.alexjvs.com/?mno=265631 [Access: September 12, 2024]. doi:10.5455/ajvs.265631

AMA (American Medical Association) Style

Marwa Abd El-Kader, Tarek Mahmoud Mousa-Balabel. Isolation and Molecular Characterization of Some Bacteria Implicated in the Seasonal Summer Mortalities of Farm-raised Oreochromis niloticus at Kafr El-Sheikh and Dakahlia Governorates. AJVS. 0; 0(0): -. doi:10.5455/ajvs.265631


Vancouver/ICMJE Style

Marwa Abd El-Kader, Tarek Mahmoud Mousa-Balabel. Isolation and Molecular Characterization of Some Bacteria Implicated in the Seasonal Summer Mortalities of Farm-raised Oreochromis niloticus at Kafr El-Sheikh and Dakahlia Governorates. AJVS. (0), [cited September 12, 2024]; 0(0): -. doi:10.5455/ajvs.265631


Harvard Style

Marwa Abd El-Kader, Tarek Mahmoud Mousa-Balabel (0) Isolation and Molecular Characterization of Some Bacteria Implicated in the Seasonal Summer Mortalities of Farm-raised Oreochromis niloticus at Kafr El-Sheikh and Dakahlia Governorates. AJVS, 0 (0), -. doi:10.5455/ajvs.265631


Turabian Style

Marwa Abd El-Kader, Tarek Mahmoud Mousa-Balabel. 0. Isolation and Molecular Characterization of Some Bacteria Implicated in the Seasonal Summer Mortalities of Farm-raised Oreochromis niloticus at Kafr El-Sheikh and Dakahlia Governorates. Alexandria Journal of Veterinary Sciences, 0 (0), -. doi:10.5455/ajvs.265631


Chicago Style

Marwa Abd El-Kader, Tarek Mahmoud Mousa-Balabel. "Isolation and Molecular Characterization of Some Bacteria Implicated in the Seasonal Summer Mortalities of Farm-raised Oreochromis niloticus at Kafr El-Sheikh and Dakahlia Governorates." Alexandria Journal of Veterinary Sciences 0 (0), -. doi:10.5455/ajvs.265631


MLA (The Modern Language Association) Style

Marwa Abd El-Kader, Tarek Mahmoud Mousa-Balabel. "Isolation and Molecular Characterization of Some Bacteria Implicated in the Seasonal Summer Mortalities of Farm-raised Oreochromis niloticus at Kafr El-Sheikh and Dakahlia Governorates." Alexandria Journal of Veterinary Sciences 0.0 (0), -. Print. doi:10.5455/ajvs.265631


APA (American Psychological Association) Style

Marwa Abd El-Kader, Tarek Mahmoud Mousa-Balabel (0) Isolation and Molecular Characterization of Some Bacteria Implicated in the Seasonal Summer Mortalities of Farm-raised Oreochromis niloticus at Kafr El-Sheikh and Dakahlia Governorates. Alexandria Journal of Veterinary Sciences, 0 (0), -. doi:10.5455/ajvs.265631




Most Viewed Articles
Most Accessed Articles

  • Assessment of The Efficiency of Some Chemical Disinfectants Used in poultry Farms Against Coccidiosis
    Hamed Abdel tawab Samaha, Yasser Nasr Haggag, Mohammed Al sayed Nossair, Heba Mohammed Habib
    AJVS. 2013; 39(1): 82-90
    » Abstract

  • Physiological and Oxidative Stress Biomarkers in the Freshwater Nile Tilapia, Oreochromis niloticus L., exposed to sublethal doses of cadmium
    Ahmed M. EL-Gazzar, Khalid E. Ashry, Yasser S. El-Sayed
    AJVS. 2014; 40(1): 29-43
    » Abstract » doi: 10.5455/ajvs.48333

  • Influence of Combined Administration of Turmeric and Black seed on Selected Biochemical Parameters of Diabetic Rats
    Sabry M. El-Bahr, Nabil M. Taha, Mahdy A. Korshom, Abd EL-Wahab A. Mandour, Mohamed A. Lebda
    AJVS. 2014; 41(1): 19-27
    » Abstract » doi: 10.5455/ajvs.154650

  • Molecular Characterization of Listeria Species Isolated from Frozen Fish
    Gaber S. Abdellrazeq, Ayman M. Kamar, Samya M. El-Houshy
    AJVS. 2014; 40(1): 1-15
    » Abstract » doi: 10.5455/ajvs.45443

  • Growth Performance, Blood Parameters, Immune response and Carcass Traits of Broiler Chicks Fed on Graded Levels of Wheat Instead of Corn without or With Enzyme Supplementation
    Mohamed I. El-Katcha, Mosaad A. Soltan, Hany F. El-Kanwy, EL-syaed R. kawarie
    AJVS. 2014; 40(1): 95-111
    » Abstract » doi: 10.5455/ajvs.48232

    •
    Most Downloaded
    Top Downloaded Articles

  • Comparative Study of Cellular and Humoral Immune Response to BHV-1 Vaccines in Cattle and Buffalo Calves
    Fayrouz S. Naim; Samy A. Khalil and Helmy A. Torky
    AJVS. 2016; 51(2): 367-373
    » Abstract

  • Effect of Excess Fluoride on Reproductive Potentials in Farm Animals (Ovine)
    Ghada H. Abdel-Rahman, Hanaa A. El-Hallawany, Dohreig RA.
    AJVS. 2018; 57(2): 41-57
    » Abstract » doi: 10.5455/ajvs.296364

  • Growth Performance, Blood Parameters, Immune response and Carcass Traits of Broiler Chicks Fed on Graded Levels of Wheat Instead of Corn without or With Enzyme Supplementation
    Mohamed I. El-Katcha, Mosaad A. Soltan, Hany F. El-Kanwy, EL-syaed R. kawarie
    AJVS. 2014; 40(1): 95-111
    » Abstract » doi: 10.5455/ajvs.48232

  • Physiological and Oxidative Stress Biomarkers in the Freshwater Nile Tilapia, Oreochromis niloticus L., exposed to sublethal doses of cadmium
    Ahmed M. EL-Gazzar, Khalid E. Ashry, Yasser S. El-Sayed
    AJVS. 2014; 40(1): 29-43
    » Abstract » doi: 10.5455/ajvs.48333

  • Using of Polypropylene Mesh for Hernioplasty in Calves
    Mostafa M. kassam, Mahmoud H. Elkammer, Ahmed S. Korittum, Ali A. Abdel-Wahed
    AJVS. 2014; 40(1): 112-117
    » Abstract » doi: 10.5455/ajvs.47290

    •
    Most Cited Articles
    Most Cited Articles

    About Alexandria Journal of Veterinary Sciences

    The Alexandria Journal of Veterinary Sciences (AJVS) Official Journal of Faculty of Veterinary Medicine, Alexandria University   ISSN: 1110 ... Read more.



    For best results, please use Internet Explorer or Google Chrome.

    Contact Information

    Faculty of Veterinary Medicine, Alexandria University
    Edfina, Behaira, Egypt.
    PO.Box: 22758
    Telefax: +20 45 2963526
    POLICIES & JOURNAL LINKS
    Author Login
    Reviewer Login
    About Publisher
    Advertising Policy
    Author's Rights and Obligations
    Conflict of Interest Policy
    Copyright Information
    Digital Archiving & Preservation Policies
    Editorial Policies
    Peer Review Policy
    Editorial & Peer Review Process
    License Information
    Open Access Policy
    Plagiarism Policy
    Privacy Policy
    Protection of Research Participants (Statement On Human And Animal Rights)
    Publication Ethics and Publication Malpractice Statement
    Corrections, Retractions & Expressions of Concern
    Self-Archiving Policies
    Statement of Informed Consent
    Terms of Use