The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613117320130701A survey study on ashtoum El-Gamil park's water concerning phytoplankton populations19217210.21608/ejabf.2013.2172ENMohamed Abd El-KarimHydrobiology Lab., National Institute of Oceanography and Fisheries, Cairo, Egypt;Abdelhamid AbdelhamidDept. of Animal Production, Faculty of Agriculture, Mansoura University, Egypt;Eldeweny MabroukDept. of Animal Production, Faculty of Agriculture, Mansoura University, Egypt; andManal BarbaryDept. of Fish Pathology, National Institute for Oceanography and Fisheries, Cairo, EgyptJournal Article20170404Among the 19 water samples collected year round during (2010 – 2011) from<br />Ashtoum El-Gamil Park, 12 samples succeeded to cluster above similarity level of<br />60%. The samples of similarity less than 60% were mainly sampled during summer.<br />Total phytoplankton diversity marginally changed between lake stations. The highest<br />diversity of 3.1 was found at station No. 4 in winter where a minimum diversity of<br />1.14 was found at station No. 1 in spring. The dominant classes in Lake Manzala<br />(Ashtoum El-Gamil Park) were chlorophytes, diatoms and cyanoprokaryotes. The<br />three groups altogether constitute more than 95% and 85% of the total phytoplankton<br />abundance and total number of taxa, respectively. Based on cell number, the<br />chlorophytes ranked the first position of dominance with relative abundance of<br />84.23% and they exclusively dominated the phytoplankton communities year round.<br />Regarding the species composition, chlorophytes dominated the phytoplankton<br />species composition with percentage occurrence of 44% to the total number of<br />recorded species. The phytoplankton abundance showed major peaks during spring at<br />different stations except at station No. 2 where the highest abundance of 28716 cells x<br />105 l-1 was found, whereas the minor peaks were irregularly distributed between other<br />seasons with the least abundance of 704 cells x 105 l-1 which was detected during<br />winter at station No. 4. Generall, the total number of taxa per site showed no obvious<br />pattern of variation. It is concluded that presence and biodiversity of phytoplankton<br />are affected by locations and seasons, and the pollution is under the critical levels.The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613117320130701Bacteriological status of ashtoum El-Gamil protected area1123217310.21608/ejabf.2013.2173ENAbdelhamid Abdelhamid1Dept. of Animal Production, Fac. of Agriculture, Mansoura Univ., Mansoura, EgyptManal El-BarbaryFish Pathology Lab., National Institute for Oceanography and Fisheries, Cairo, Egypt.El-Deweny MabroukDept. of Animal Production, Fac. of Agriculture, Mansoura Univ., Mansoura, EgyptJournal Article20170404Survey study was carried out throughout four seasons from four locations<br />representing the whole protected area "Ashtoum El-Gamil", Port Said governorate,<br />Manzala Lake concerning the bacterial load in water and fish of this park. The<br />bacterial load in water samples increased by increasing water temperature, the range<br />of total count of bacteria was 0.6×106 to 0.2×108 /100 ml of water sample in winter<br />and summer respectively. The following bacterial genera were isolated from water<br />samples: Aeromonas, Bacillus, Proteus, Pseudomonas, Streptococcus, S. epidermidis,<br />S. aureus, Micrococcus, Vibrio and E. coli. The predominant microorganisms isolated<br />from water were E. coli, Bacillus spp., Vibrio spp. and Pseudomonas spp. While the<br />total bacterial counts (TBCs) from fish samples obtained on NA media were higher in<br />summer season in all tested organs than other seasons (spring, winter and autumn);<br />also, the high bacterial load was observed in both of gills and intestine comparing<br />with the liver. TBCs were 0.8×107, 0.52×107 and 0.13×107 cfu / g in gills, intestine<br />and liver, respectively in location No. 3 (bahr kassab) during the summer. The highest<br />TBCs obtained on McCA, MSA, and BHA media were 0.16×107, 0.25×107, and<br />0.3×107 cfu / g of gills in locations No. 1, 1 and 3 during summer, autumn and<br />summer, respectively. The bacterial species isolated also from fish were namely V.<br />cholerae, V. parahaemolyticus, Aeromonas spp., E. coli, Yersinia spp., Proteus,<br />Pseudomonas spp., Micrococcus spp., S. epidermidis, S. aureus and Streptococcus<br />spp. In the pathogenicity test, the most pathogenic bacteria for tilapia fish were<br />Pseudomonas spp., V. cholerae and Aeromonas spp which causing greater than 70,<br />60% and 60% mortality within 96 hr respectively.The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613117320130701Age, growth and reproduction of the lizard fish Saurida undosquamis from the Gulf of Suez, Red Sea, Egypt2534217410.21608/ejabf.2013.2174ENSalah El-EtrebyMarine Science Department, Faculty of Science, Suez Canal UniversityMahmoud SaberMarine Science Department, Faculty of Science, Suez Canal UniversityAzza El-GanainyFisheries Division, National Institute of Oceanography and FisheriesAl-Azab El-bokhtyFisheries Division, National Institute of Oceanography and FisheriesJournal Article20170404The lizard fish Saurida undosquamis represents one of the most commercial fish<br />in the Gulf of Suez. The growth and reproductive biology of the species were studied.<br />The age was determined from otolith readings of the collected specimens from the<br />Attaka Harbor through the period from September 2011 to April 2012. The results<br />show that the life span of the sampled fish was seven years. The estimated von<br />Bertalanffy growth equation was Lt=51.252 (1-e-0.131(t+1.45)), the calculated lengthweight<br />relationship was W= 0.004 L3.107. Seasonally distribution of gonado-somatic<br />index (GSI) values showed that the main peak of GSI was in spring. The results of<br />gonad development stages show that, Saurida undosquamis is a synchronous spawner.<br />The size at which 50% of fishes are mature was 15.0 cm for males and 15.5 cm for<br />females, which indicates that all individuals over one year of age were sexually<br />mature. The results indicated that juvenile individuals are one of the targets of the<br />fishery and the protection of the juveniles is probably the key factor for the<br />sustainability of the resources.The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613117320130701Effect of four different commercial diets on growth perfomance of the cichlid fish, Oreochromis niloticus fingerlings3546217510.21608/ejabf.2013.2175ENHassan Khalaf AllahMarine Biology and Icthiology branch, Zoology Department, Faculty of Science,
Al-Azhar UniversityMohamed Abu-ZaidMarine Biology and Icthiology branch, Zoology Department, Faculty of Science,
Al-Azhar UniversityMohamed Abdel-GhanyGeneral Authority of Fish Resources Development, Cairo.Journal Article20170404The present study deals with the effect of four commercially prepared diets on the length-weight relationship, condition factors, growth performance and feed utilization of the cichlid fish, Oreochromis niloticus fingerling reared in glass aquaria. The major components of diets included proteins, fats and carbohydrates of each feed type. The diets were analyzed for verification of values written on its commercial label. Data showed that, the standard length of the fish fed on the different diets did not vary significantly where it ranges between 6.28 ± 0.9 cm in diet II to 6.66 ± 0.8<br />cm in diet I. The same pattern of change was also noticed in comparing the weight of fishes fed on the four diets. Data indicated that, fish feeding on diet IV demonstrate the lowest weight being on the average of 8.86 ± 1.97 gm, while, fish feeding on diet I showed the highest weight being averaged 10.37 ± 3.2 gm. The growth of fish is nearly isometric in the first three diets and negative allometric in the fourth one. The values of condition factors are slightly differences among different diets. The highest value (3.46) of coefficient of condition (k) was recorded in the fish fed on diet II and<br />the lowest value (3.09) in the fish fed on diet III. The highest average value (1.07) of the relative condition factor (kn) and the lowest (0.90) were recorded in the fish fed on diet III. The lowest value of total weight gain, average daily gain and specific growth rate were detected in the fish fed on diet IV. The value of feed intake of diet I<br />is better than the values obtained from the other feed diets. The best feed conversion ratio (1.87) was recorded in the fish fed on diet II. The lower protein efficiency ratio (0.25) was recorded with diet IV and the higher protein efficiency ratio (0.53) was recorded with diet II.The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613117320130701The impact of agricultural drains on water quality and Phyto- zooplankton communities in fish farms, Egypt.4756217610.21608/ejabf.2013.2176ENAbd El-Halim SaadZoology Department, Faculty of Science, Ain Shams University, Egypt.Ahmed Abd El-GawadCentral Lab for Aquaculture Research, Agricultural Research CenterNiema AliCentral Lab for Aquaculture Research, Agricultural Research CenterNadia BassunyLabor University , Kafr El-Sheikh, Egypt.Journal Article20170404This study was carried out on two fish farms in Kafr El-Sheikh and Sharkia governorates during 2011. The water supply sources of these farms were El-Gharbia and El-Wady drains respectively. The mean values of physico-chemical parameters of water in El-khashaa and Abbassa fish farms were: water temperature (24.66 and 24.95 oC); pH (9.23 and 8.67); transparency (12.12 and 15.24 cm); DO (5.36 and 6.3 mg/l ); total alkalinity (330.9 and 340.3 mg/l) and total hardness (689.5 and 260.0 mg/l), respectively. The major nutrient concentrations (N & P) at the main feeder<br />were much higher than the corresponding values at fish farms. Nitrogen concentrations analysis indicated the highest values of NH3-N over NO3-N in the selected fish ponds (1.94 and 1.22 mg/l respectively). Phytoplankton in the present<br />study were represented by four groups; Chlorophyceae, Cyanophyceae,Bacillariophyceae and Euglenophyceae, where Chlorophyceae dominated other groups. Zooplankton were represented by four groups; Rotifera, Copepoda, Ostracoda<br />and Cladocera. Rotifera and Cladocera were the dominant groups. Results indicated that the drainage water affects physical, chemical and biological characteristics of fish farmsThe Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613117320130701The seaweed (green macroalgae), Ulva sp. as bioindicator of metal pollution in the Mediterranean Coast, Alexandria region, Egypt5768217710.21608/ejabf.2013.2177ENSamir SaeedCentral Lab. for Aquaculture Research, Agricultural Research Center.
Limnology dept.Yasser MoustafaCentral Lab. for Aquaculture Research, Agricultural Research Center.
Limnology dept.Journal Article20170404Changes in heavy metals (Fe, Mn, Zn, Cu, Cd and Pb) concentrations in marine seaweed (green alga) Ulva sp. and seawater collected from the the Mediterranean Coast, Alexandria region, Egypt were investigated during monthly samplings from January to December 2012 to assess the spatial and seasonal variation of these elements as well as the pollutional status at this area. Fe had the highest concentration and Cd found the lowest one. There were statistically positive significant correlations among the levels of some metals in the macroalgae. The mean metals concentration in<br />the Ulva tissue decreased in the order: Fe>Mn>Zn>Cu>Pb>Cd. Only, concentrations, Fe, Zn and Pb, in water showed significant (P<0.05) seasonal changes. Fe, Mn, Zn and Cu showed the greater spatial and temporal differences (P<0.05) in macroalgae tissues. The results showed that the studied area not faced heavy metals pollution. It is<br />also concluded that Ulva sp. play an important role as a bioindicator for heavy metals contamination in seawater. The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613117320130701Changes in the intestinal bacterial profile and serum biochemical parameters of Nile Catfish Clarias lazera after feeding with probiotic.6987217810.21608/ejabf.2013.2178ENEsam RizkallaBiochemistry, Nutritional Deficiency Diseases and Toxicology DeptHala HabashiBacteriological Dept.Ahmed AliFish Diseases Dept., Animal Health Res. Inst., Agri. Res. Cen., Dokki, Giza,
Egypt.Journal Article20170404In this study, the experimental set-up was based on fed Clarias lazera commercial diet with probiotic for 45 days either 1 time/week (W1) all over the experiment or 3 times/week for the 1st two weeks then 1 time/week till the end of the<br />experiment (W3). Bacteriological and biochemical examinations were done on intestinal tract and serum respectively.<br />Bacteriological investigation revealed the presence of Escherichia coli and Klebsiella spp. in all groups and Pseudomonas aeruginosa failed to be isolated from W1 and W3. Bacterial isolates proved to be pathogenic for mice, positive for Congo<br />red binding activity and toxigenic in infant mice. The intestinal total aerobic bacterial count; Enterobactereacae count and coliform count in males and females of both W1 and W3 fish groups were significantly lower than the respective values in control group. Significant low values were detected in W3 group compared to W1 group.<br />Significant sex differences in the three counts were detected in the three groups of fish except the Enterobactereacae count in W3 group. Concentrations of serum ammonia and urea were significantly decreased in both treated groups compared to the control group. Both serum items were significantly lower in W3 group than that in W1 group. Significant sex difference was recorded in serum creatinine of the three groups (females lower than males).<br />The activities of serum alkaline phosphatase; alanine aminotransferase and aspartate aminotransferase enzymes significantly differed according to sex with a general trend that these enzymes were significantly higher in W3 group than that ofW1 group.Serum total protein, albumin, globulin and A/G ratio in fish of W1 group weremore affected by probiotic administration than that in W3 group. These serum protein items in all groups were significantly affected by sex. Serum IgM level in both sexes of W1 group was significantly higher than that in both control and W3 groups.<br />A correlation analysis was conducted to determine the strength of the association between serum biochemical parameters and viable total bacterial count;Enterobactereacae and coliform counts in the guts of fish. Male fish showed<br />similarity of the correlations analysis between the three bacterial counts and the<br />different serum biochemical parameters, while female fish detected some variations<br />according to the type of bacterial count.The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613117320130701Some ecological aspects of the land hermit crab Coenobita scaevola (Coenobitidae) at Wadi El-Gemal protected area, Red Sea89106217910.21608/ejabf.2013.2179ENAbd Al-Kader HassanMarine Biology and Icthiology branch, Zoology Department, Faculty of Science,
Al-Azhar University- CairoMohamed Abu-ZaidMarine Biology and Icthiology branch, Zoology Department, Faculty of Science,
Al-Azhar University- CairoBesar HEgyptian Environmental Affairs Agency- CairoHanafy MHDepartment of Marine Science, Suez Canal University, Ismailia, EgyptJournal Article20170404Gastropod shells can be a limiting factor in allowing hermit crab populations to<br />increase. The impact of this factor on population size of the land crab Coenobita scaevola<br />(Forskäl, 1775) was examined. Extensive and intensive works were conducted on a sandy<br />beach of Wadi El-Gemal island and the protected area coast (35°04’0”E, 24°42’0”N).<br />Activity, spatial and temporal distribution, food foraging, and impact of human tourism<br />activities for this hermit crab were discussed. A total of 365 crab individuals were collected<br />from the sandy beach of Wadi El-Gemal island during August 2007 to July 2008, among<br />these 137 were used for frequency measurements of occupied shells by the land hermit crabs.<br />The hermit crabs were found occupying seventeen species of gastropod shells. A significant<br />regression and correlation were recorded between the shell aperture and chelae. However, our<br />data showing no significant regression values between total body weight of crabs and for<br />each of the shell weight and internal volume. From the other angle, the correlation<br />relationship recorded high significant value for the same relationships. This may reflect that<br />some smaller crabs tend to occupy larger shells than the preferred ones. Moreover, the shell<br />species occupation as a function of chelar hermit crabs size. While the negative results<br />between body weight of crab and both shell internal volume and weight it may be due to the<br />variations behavior of some land hermit crab individuals within population. It is logical that<br />fit the size of chelae with aperture of shell to achieve protection from predators while some<br />members of the population that occupied shell is greater than the size of his body to the<br />unavailability of appropriate shells.The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)Egyptian Journal of Aquatic Biology and Fisheries1110-613117320130701Study on toxicity of Oreochromis niloticus with aflatoxinB1107119218010.21608/ejabf.2013.2180ENSherif H.Dep. Fish diseases, Animal Health Research Institute (AHRI) - kafr El-Shiekh
Branch - Agriculture Research Center (ARC).Abdel-Maksoud A.Dep. Fish diseases, Animal Health Research Institute (AHRI) - Domitta Branch -
Agriculture Research Center (ARC)Shukry M.Dep. Physiology, Faculty of Vet. Med- kafr El-Shiekh Univ.Journal Article20170404The purpose of this study was to determine the effect of aflatoxin B1 (AFB1) on immunity and hematological profile, RBC, WBC, Hb, serum protein, albumin-A, globulin-G, A/G ratio, phygocytic activity, nitro blue tetrazolium reduction and<br />challenge test against Aeromonas hydrophilla of apparently healthy 150 Nile tilapia Oreochromis niloticus weighed 23.42±1.2 gram. After 84 days of exposure to AFB1 100 and 20 μg/kg fish samples were collected then O. niloticus were treated with biological antitoxin for 3 days then samples were taken after stoppage the treatment<br />by 7 days. Immune activities and hematological profile were significantly (P ≤ 0.05) influenced in dose and duration of exposure dependent manner this was reflected in the health and growth performance of O. niloticus. Results indicated that improvements had achieved by lowering the AFB1 compained with biological treatment