E-ISSN 2536-9520 | ISSN 1110-2047
 
2025, Vol: 85
85Current Volume Online First Archive Aims and Scope Abstracting & Indexing Most Accessed Articles Most Downloaded Articles Most Cited Articles

Original Article 


Phenotypic Characterization of Certain Flavobacteria Species Infected Cultured Freshwater Fish

Samy A. Khalil, Amr Fadel, Emadal-ebshahy, Nada H.a. Menesy.


Abstract
One of the most important and distributed bacterial disease in freshwater fish in Egypt is flavobacteriosis disease that caused by the gram-negative bacillus Flavobacterium which infects fish under stressful conditions and causing high mortality. In this study we have attempted to identify the possible infection of three flavobacteria app. (F. columnare, F. covae, and F. davissi) out of 200 cultured African catfish Clarias gariepinus and Nile tilapia tilapia niloticus. The Goal of this study was to isolate and characterize Flavobacteria species phenotypically, biochemically and detect the haemolytic virulence activity, beside evaluation antibiotics resistance activity of this bacterium. Despite, all flavobacteria species cause heamolysis to sheep blood agar that indicate to presence of heamolysine virulence gene but the F.columnare TIL2015 strain show no heamolysis on sheep blood agar. According to antibiotic sensitivity assay Gentamycin 30 μg, was the most effective antibiotic against the all tested Flavobacteria species, however F.columnare strains were sensitive against Doxycycline 30 μg, streptomycin 10 μg, beside gentamycin 30 μg. All isolates were resistant to amoxicillin 30 μg and Cefalexine 30 μg.

Key words: Keywords: Flavobacterium spp, hemolytic activitiy, antibiotic senstivity, and fish


 
ARTICLE TOOLS
Abstract
PDF Fulltext
How to cite this articleHow to cite this article
Citation Tools
Related Records
 Articles by Samy A. Khalil
Articles by Amr Fadel
Articles by EmadAl-Ebshahy
Articles by Nada H.A. Menesy
on Google
on Google Scholar


How to Cite this Article
Pubmed Style

Khalil SA, Fadel A, Emadal-ebshahy , Menesy NH. Phenotypic Characterization of Certain Flavobacteria Species Infected Cultured Freshwater Fish. AJVS. 2023; 79(1): 44-50. doi:10.5455/ajvs.160357

Web Style

Khalil SA, Fadel A, Emadal-ebshahy , Menesy NH. Phenotypic Characterization of Certain Flavobacteria Species Infected Cultured Freshwater Fish. https://www.alexjvs.com/?mno=160357 [Access: May 05, 2025]. doi:10.5455/ajvs.160357

AMA (American Medical Association) Style

Khalil SA, Fadel A, Emadal-ebshahy , Menesy NH. Phenotypic Characterization of Certain Flavobacteria Species Infected Cultured Freshwater Fish. AJVS. 2023; 79(1): 44-50. doi:10.5455/ajvs.160357


Vancouver/ICMJE Style

Khalil SA, Fadel A, Emadal-ebshahy , Menesy NH. Phenotypic Characterization of Certain Flavobacteria Species Infected Cultured Freshwater Fish. AJVS. (2023), [cited May 05, 2025]; 79(1): 44-50. doi:10.5455/ajvs.160357


Harvard Style

Khalil, S. A., Fadel, . A., Emadal-ebshahy, . & Menesy, . N. H. (2023) Phenotypic Characterization of Certain Flavobacteria Species Infected Cultured Freshwater Fish. AJVS, 79 (1), 44-50. doi:10.5455/ajvs.160357


Turabian Style

Khalil, Samy A., Amr Fadel, Emadal-ebshahy, and Nada H.a. Menesy. 2023. Phenotypic Characterization of Certain Flavobacteria Species Infected Cultured Freshwater Fish. Alexandria Journal of Veterinary Sciences, 79 (1), 44-50. doi:10.5455/ajvs.160357


Chicago Style

Khalil, Samy A., Amr Fadel, Emadal-ebshahy, and Nada H.a. Menesy. "Phenotypic Characterization of Certain Flavobacteria Species Infected Cultured Freshwater Fish." Alexandria Journal of Veterinary Sciences 79 (2023), 44-50. doi:10.5455/ajvs.160357


MLA (The Modern Language Association) Style

Khalil, Samy A., Amr Fadel, Emadal-ebshahy, and Nada H.a. Menesy. "Phenotypic Characterization of Certain Flavobacteria Species Infected Cultured Freshwater Fish." Alexandria Journal of Veterinary Sciences 79.1 (2023), 44-50. Print. doi:10.5455/ajvs.160357


APA (American Psychological Association) Style

Khalil, S. A., Fadel, . A., Emadal-ebshahy, . & Menesy, . N. H. (2023) Phenotypic Characterization of Certain Flavobacteria Species Infected Cultured Freshwater Fish. Alexandria Journal of Veterinary Sciences, 79 (1), 44-50. doi:10.5455/ajvs.160357




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
    P.O.: 21944
    Abees 10th district, Alexandria
    Egypt.

    email: ajvs@alexu.edu.eg
    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