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Register a new userIsolation and Antibiotic Susceptibility of Aeromonas spp. From Freshwater Fish Farm and Farmed Carp (Dam of 16 Tishreen, Lattakia)
عزل أنواع من الأيروموناس و اختبار تحسسها للصادات الحيوية من ماء و أسماك الكارب في مزرعة سمكية مائية عذبة (سد 16 تشرين- اللاذقية)
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جمعت 30 عينة ماء و 45 عينة أسماك مصابة (نوع كارب أو شبوط) من مزرعة سمكية مائية عذبة (سد 16 تشرين- اللاذقية) و حللت جرثومياً. أظهر الفحص العياني للأسماك المصابة وجود آفات جلديـة نزفية مع بقع بلون بني أو أحمر على كامل جلدها. عزل ما مجموعه 64 سلالة للأيروموناس. توزعـت عزلات الأيروموناس كما يأتي: النـوع hydrophila Aeromonas) 34 ,53 ،(%النـوع caviae. A تعد، إجمالاً%). 8 ,5) الأيروموناس من محددة غير و أنواع %) 14 ,9) A. sobria النوع%)، 25 ,16) أفراد الأيروموناس عوامل ممرضة انتهازية تسبب التهاب معدة و أمعاء و عدوات أخرى في البشر. أجريت اختبارات التحسس للصادات الحيوية على كل السلالات المعزولة مـن أنـواع الأيرومونـاس باسـتخدام عشرين صاداً حيوياً بوساطة طريقة الانتشار من القرص.
A total of 30 water samples and 45 infected fish (carp, Cyprinus carpio) were collected from freshwater fish farm (Dam of 16 Tishreen-Lattakia) and analysed bacteriological. Macroscopic examinations of infected fish had showed the presence of haemorrhagic skin lesions with brown or red spots throughout their skin. A total of 64 Aeromonas strains were isolated. The Aeromonas isolates were distributed as follows: Aeromonas hydrophila (34, 53%), A. caviae (16, 25%), A. sobria (9, 14%) and (5, 8%) of unidentified aeromonads. Collectively, Aeromonas spp. are considered as opportunistic causative agents of human gastroenteritis and other infections. Antibiotic susceptibility tests were carried on all strains of isolated Aeromonas spp. using twenty different antibiotics by agar disk diffusion method.
References used
Abraham, T. J., Manley, R., Palaniappan, R. and Devendran, K. (1997). Pathogenicity and antibiotic sensitivity of luminous Vibrio harveyi isolated from diseased penaeid shrimp. J. Aquac. Trop. 12 (1), 1 -8
Amir, S., Amy, S. R., Margaret, K., Janelle, B., Shawn, Mc., Polly, W. and Robert, L. (2008). Aquaculture practices and potential human health risks: current knowledge and future priorities. Environment international, 34(8):1215-26
Ascencio, F., Martinez-Arias, W., Romero, M. J. and Wadstrom, T. (1998). Analysis of the interaction of Aeromonas caviae, A. hydrophila and A. sobria with mucins. FEMS Immunology and Medical Microbiology. 20, 219-229
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This study aimed at evaluating the productivity of common carp (Cyprinus carpio L.)
farmed in the floating-cages in the 16 Tishreen Dam between 1995 and 2004. The results
showed that the feed amount was about (5000 tons) in 1998, while it was about
(370 tons)
in 1995. The proportion of protein reached 33.71% in 2000 and 28% in 1996. The number
of carp fingerlings was 283000 in 4440 and 200550 in 1999. The fingerlings intensity in
the cage was 115.387 fingerlings / m³ in 1995 and 90.355 fingerlings / m³ in 2003. The
results also showed that the studied farm was not profitable in 1995 and 1998 because of
fish over-wintering, while it was in the remaining years. These results indicate that the
studied farm has successfully overcomed many of the problems and it was gainful in many
years. However, the main aim of the studied farm is providing the local market by
freshwater fish and offering many job opportunities.
The study included 132 Free – living fish in Lake of 16 Tishreen Dam,
collected randomly during the period from 22/11/2011 until 22/10/2012, on
average once a month, for detecting the infection of parasitic copepoda, and
determine the distribution rate, and their effect on the fish productivity.
The study included 144 Free – living fish from the Lake of 16 Tishreen Dam, collected randomly during the period from 12/2011 until 11/2012, on monthly basis to detect the infection with Epistylis sp. and determine its distribution rate.
Fish sam
ples were: Cyprinus carpio L., Varicorhinus damascinus, Garra rufus, Tilapia zilli, and Liza abu. Tilapia zilli was the most prevalent in the lake of 16 Tishreen Dam.
The study revealed fish infection with Epistylis sp. on free – living fish in the Lake, with a total infection rate 22.22 % , mainly on Tilapia zillii (29.70 %) and then on mullet (2%);No infection with Epistylis sp. Was recorded on the other fish species. The infection with this ecto Epistylis sp. was recorded for the first time in Syria in our study.
The infection with Epistylis sp. was located on the skin, fins and gills. The highest infection rate was on the fins ( 42.34 %) , followed by skin (37.46 %) , and then by gills (1.87 %) .
The infection with Epistylis sp. had the highest rate in summer ; i.e. during high temperature , low concentration of dissolved oxygen , and slightly high value of BOD.
The study showed that, the water of 16 Tishreen Dam is relatively clean.
The research aims to determine the water Quality Index for the Lake of 16 Tishreen Dam. To achieve
this aim, we have carried out different periodical physic-chemical and bacterial measurements on the lake
water. The samples were taken at five sites
along the lake for a period of one complete year. The indicators
that have been measured are: Temperature, Turbidity, PH, EC, DO, BOD5, NO3, NO2, NH4 ,PO4, F.C.
Measurement results were represented diagrammatically, and compared with the Syrian Specification
Standards for portable Water. The lake was classed according to these Indices: Malays quality index,
Canadian Indices (NSFWQI), (NEWWQI). The Lake was Classed according to these indices as following:
from third grade at all locations (Malays Index), from second grade at the middle lake and from a third grade
to all other locations (NSFWQI), and from second grade at all locations (NEWWQI). According to this
indices the water is not good for drinking and needs treatment. The Productivity of the lake was determined.
The Lake is Eutrophic according to TN,TP in the middle but Hypertrophic according to TN,TP in all other
locations.
The aim behind this study was to isolate and characterize fungi from fermented olive
mill wastewater to determine the superior one that can resist high organic load and total
phenol of fresh Olive Mill Wastewater (OMW).
Two different media Czapak
Dox Agar (CzA) and Potato Dextrose Agar (PDA) were
used for identification of fungi by studying macroscopic and microscopic characteristics.
However, Aspergilluss sclerotiorum, Paecilomyces sniveus and Mucor nircinelloides had
had been identified .
After testing the isolates on fresh olive mill wastewater solid mediums OMWA1
(50%OMW), OMWA2 (75%OMW) and OMWA3 (100%OMW).
Whereas P. niveus proves that was the superior one, which can resist high
concentration of fresh olive mill wastewater.
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