http://hdl.handle.net/1834/1003 Thu, 23 May 2013 23:53:15 GMT 2013-05-23T23:53:15Z http://hdl.handle.net/1834/1061 Title: Light microscope study of Oncorhynchus kisutch muscle development Authors: Rabah, S. Abstract: Study of microscopic structural changes of red and white muscle of coho salmon, Oncorhynchus kisutch, through different developmental stages and through transition from parr to smolt revealed developmental variation in fibre size where white fibres were larger than red ones. The increase in fibre area, characterizing all stages of development, was associated with reduction in both fibre and capillary densities. In large fish the reduction in red muscle capillary density was 10 fold lesser than that of white muscle. Sat, 01 Jan 2005 00:00:00 GMT http://hdl.handle.net/1834/1061 2005-01-01T00:00:00Z http://hdl.handle.net/1834/1149 Title: Seasonal concentrations of some heavy metals in muscle tissues of Siganus rivulatus and Sargus sargus fish from El-mex bay and eastern harbour, Alexandria, Egypt Authors: Khaled, A. Abstract: The concentration of seven heavy metals (Cd, Cu, Fe, Mn, Ni, Pb and Zn) were detected seasonally in muscle tissues of two fish species (Siganus rivulatus, Sargus sargus) collected from El-Mex Bay and Eastern Harbour. In both species, levels of the seven metals were significantly higher in summer compared with other seasons. The concentrations of such metals decreased in the order Fe > Zn > Cu > Ni ≥ Pb > Mn > Cd. The metal pollution index (MPI) for the two species fluctuated between 0.9 and 1.8 in El-Mex and Eastern Harbour. Provisional Tolerable Weekly Intake (PTWI) demonstrates that the concentration of the metals (Cd, Cu and Pb) in the muscle of Siganus rivulatus and Sargus sargus from El-Mex Bay and Eastern Harbour are much lower than the PTWI values and accordingly there is no risk for the human consumption of these fish species. Description: This Journal is published by Ain Shams University Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/1834/1149 2004-01-01T00:00:00Z http://hdl.handle.net/1834/1211 Title: Biochemical effect of aquatic environmental pollution on the fishermen health Authors: Saad, A.A.; El-Sekeily, A.M.; Moafy, N.M.; Youssef, A.I. Abstract: This study is an attempt to describe a human health risk assessment as a function of recreationl activities in relation to environmental pollution of El-Mex bay through studying the Haemoglobin-adducts (Hb-adducts) of three aromatic amines namely benzidine, alpha and beta naphthylamine as biomarker for exposure as well as biochemical effects of these pollutants on fishermen in this area, beside the determination of these substances in the tissues of 2 types of fish at the same area. The sturdy was conducted on 21 control male subjects and 78 volunteers fishermen, all the 99 subjects were chosen to be smokers. Blood glutathione content was significantly decreased in fislrermen compared with controls. On the other hand glutathione-S-transferase, B-glucoronidase, gama-glutamyltransferase and alkaline phosphatase showed significant elevation in their activities in fishermen group compared with tlre control one. The level of the aromatic amine Hb-adducts was also significantly elevated in fishermen group. The presence of a positive correlation between the aromatic amines Hb-adducts and B-glucoronidase activity and negative correlation between the adducts level and blood glutathione content represent a great risk for the health of those fishermen, specially that they are exposed to these pollutants through fishing process and consuming these 2 types of fish in their food that shown to have elevated levels of aromatic amines in their tissues. Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/1834/1211 2004-01-01T00:00:00Z http://hdl.handle.net/1834/1086 Title: Heavy metals concentrations in certain tissues of five commercially important fishes from El-Mex Bay, Alexandria, Egypt Authors: Khaled, A. Abstract: The distribution of eight heavy metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb nd Zn) were detected in muscles, gills, livers and bones of five fish species namely, Sargus sargus, Siganus rivulatus, Mugil cephalus, Caranx crysos and Scomberomorus commerson collected from El-Mex Bay, Alexandria during January 2003. Iron and zinc were most abundant in all fish tissues under investigation. Iron, zinc and copper recorded highest concentration levels in liver while cadmium, cromium and lead recorded their highest values in gills and bones. Provisional Tolerable Weekly Intake (PTWI) demonstrated that the concentration of metals (Cd, Cu, and Pb) in muscles of the five fishes are lower than the PTWI values, and accordingly there is no risk yet for human consumption of flesh of these fishes. Description: The Text pdf contains the arabic abstract Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/1834/1086 2004-01-01T00:00:00Z