levels of contaminants in fish are of particular interest because of the potential risk to humans consuming them. this paper examines the levels of cadmium, lead, zinc and copper in liver and muscle tissue of esox lucius and in sediments from the anzali international wetland in iran. the wetland is a nursery and feeding habitat for fish species both from the lagoon and the caspian sea, which ar...

Abstract Fish is generally appreciated as one of the healthiest and cheapest source of protein and it has amino acid compositions that are higher in cysteine than most other sources of protein. Heavy metals are natural trace components of the aquatic environment but their levels have increased due to industrial wastes, geochemical structure, agricultural and mining activities. All these sources...

The Sinos River, in southern Brazil, is polluted by industrial discharges and untreated urban wastes. Fish genotoxicity biomarkers are valuable parameters for environmental risk assessment. In this study, we used the comet assay to detect genotoxicity due to multiple sources of pollution in the peripheral blood of a native fish species (Hyphessobrycon luetkenii). In addition, we analysed possib...

This study was conducted to assess the effect of the water quality of El-Rahawy drain at El-Rahawy village, Egypt, on the African catfish Clarias gariepinus blood, biochemical parameters and histology of digestive tract, testis and ovaries. In addition to that, samples of water and C. gariepinus fish were collected from the River Nile at Delta Barrage in front of El-Kanater El-Khayria City as r...

BACKGROUND Farwa is an Island in Libya receives petrochemical wastes generated from General Company of Chemical Industries (GCCI) since more than 40 years. AIM The present work aimed to determine the concentrations of mercury (Hg(+2)) in fish, marine plants and sediment collected from Farwa lagoon to evaluate effect of industrial wastewater from GCCI on the marine environment. METHODS Hundr...

Rapid industrialization along with advanced agricultural activities led to the contamination in aquatic environment with heavy metals. Heavy metals ultimately pass into human body through having aquatic animals like fish, prawn and crab. In this study, accumulation of heavy metals (zinc, copper, iron, cadmium and lead) in various organs of four commonly consumed fish (Euthynnus affinis...

Introduction: Fish innards contain 14.01% protein, 20% lipid, 4.75% ash, and 60.62% water. are formulated into granules for practicality in their application as animal feed. 
 Aim: This research on the proximate analysis of feed composed raw material from fish wastes used a descriptive quantitative method. Results: The result indicated that water content measured using thermogravimetric me...

Levels of contaminants in fish are of particular interest because of the potential risk to humans consuming them. This paper examines the levels of cadmium, lead, zinc and copper in liver and muscle tissue of Esox lucius and in sediments from the Anzali international wetland in Iran. The wetland is a nursery and feeding habitat for fish species both from the lagoon and the Caspian Sea, which ar...

During the last few years, considerable efforts have been devoted to the tracing of halogenated hydrocarbons, particularly DDT and PCB, and of mercury in Baltic animals. These investigations have already produced some important generalizations, which may be summarized as follows: (1) The concentrations of halogenated hydrocarbons and mercury in the tissues of Baltic animals are in general highe...