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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
المؤلفون المشاركون
Balabel, Tariq Mahmud Musa
Abd al-Qadir, Marwah F.
المصدر
Alexandria Journal of Veterinary Sciences
العدد
المجلد 53، العدد 2 (30 إبريل/نيسان 2017)، ص ص. 107-113، 7ص.
الناشر
جامعة الإسكندرية كلية الطب البيطري
تاريخ النشر
2017-04-30
دولة النشر
مصر
عدد الصفحات
7
التخصصات الرئيسية
الملخص EN
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 aeruginosa, 40 (15.6%) Vibrio anguillarum, 20 (7.8%) Edwardsiella tarda, 12 (4.7%) Edwardsiella ictulari, 10 (3.9%) Pseudomonas fluorescens, 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.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Abd al-Qadir, Marwah F.& Balabel, Tariq Mahmud Musa. 2017. 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،Vol. 53, no. 2, pp.107-113.
https://search.emarefa.net/detail/BIM-1332552
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Abd al-Qadir, Marwah F.& Balabel, Tariq Mahmud Musa. 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 Vol. 53, no. 2 (Apr. 2017), pp.107-113.
https://search.emarefa.net/detail/BIM-1332552
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Abd al-Qadir, Marwah F.& Balabel, Tariq Mahmud Musa. 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. 2017. Vol. 53, no. 2, pp.107-113.
https://search.emarefa.net/detail/BIM-1332552
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 112-113
رقم السجل
BIM-1332552
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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