Examples of heavy metals include mercury, cadmium, arsenic, chromium, thallium, and lead. Liver was the target organ for zn, cu, and pb accumulations. Pdf in this study, the influence of ph, temperature and dissolved oxygen on the heavy metals distribution in fish tissue were studied. They enter our bodies mainly from lower down on the food chain through a process called bioaccumulation. Bioaccumulation of heavy metals in fish and prawn at dammam coast, sa, arabian gulf. Bioaccumulation of heavy metals in fish species collected. Health risk assessment of heavy metal intake due to fish.
Bioaccumulation and potential sources of heavy metal contamination in fish species in river ganga basin. In some eutrophic aquatic systems, biodilution can occur. Metals studied were chromium, iron, zinc, lead, and copper. Heavy metal contamination in freshwater fish from the border region between norway and russiaj. Bioaccumulation of heavy metals in fish tilapia zilli and. Lead, cadmium, cobalt, nickel, and mercury can affect the formation of blood cells. Moreover, biochemical and histological changes of the muscles of the same fish species were the results revealed depletion in dissolved oxygen and transparency and increasing in the levels of ammonia, nitrite, nitrate and heavy metals in water and muscles of the samples collected from elrahawy drain. Among the contaminants, heavy metals should be highlighted due to the consequences of their bioaccumulation in aquatic ecosystems nadmitov et al. The concentrations of heavy metals cu, zn, pb, cd, fe and mn were measured in the liver, gills and muscles of fourteen benthic and pelagic fish species collected from three main landing areas shalateen, hurghada and suez in the egyptian red sea. By using atomic absorption spectrometry we assessed different organs including livers, gills, and muscles. However, intensive study on fishes is a need to determine the bioaccumulation of heavy metals and other toxic pollutants i. Heavy metals, bioaccumulation, tilapia, wadi hanifah.
Bioaccumulation and histopathological alterations of the heavy metals in oreochromis niloticus fish h. Bioaccumulation of metal substances by aquatic organisms. Bioaccumulation of heavy metals in fish tissues of a. However, there is currently no report on the assessment of heavy metals bioaccumulation in tiga dam and their pathological implications in the exposed fish. Oct 06, 2015 similarly, some heavy metals have also been reported in the bones, muscles and gills of tilapia and clarias lazera inhabiting the dam. Oct 20, 2017 rise in the level of heavy metals in the marine environment has caused severe problem to the marine organism and humans bashir et al. Bioaccumulation of mercury, cadmium, zinc, chromium, and lead. Bioaccumulation and potential sources of heavy metal. The levels of the heavy metals varied significantly among fish species and organs. Pdf bioaccumulation of heavy metals in fish sourced from. Bioaccumulation of heavy metals in fish clarias gariepinus organs from selected streams in south western nigeria aladesanmi omolara titilayo and awotoye olusegun olufemi institute of ecology and environmental studies, obafemi awolowo university, ileife, nigeria abstract. Bioaccumulation of some heavy metals in fish samples from. The magnitude of bioaccumulation of heavy metals for bone and muscle of common carp, were higher for iron and lower for zinc.
Bioaccumulation of heavy metals in some tissues of fish in lake. Bioaccumulation of heavy metals in fish species from the. The investigation of bioaccumulation of heavy metals in this species and presence of heavy metals in pond water showed that concentration of heavy metals such as p, s, k, ca, cl, fe, sn were 659. Flesh possessed the lowest concentration of all the metals. Dhaleshwari river, fish species, heavy metals, bioaccumulation, correlation and aquatic biota 1. However, many factors such as the environmental conditions, the contaminant levels, the length of the food chain, and the physiochemical properties of. A few of these elements are poisonous even if present in a low concentration. Contamination profile of heavy metals in marine fish and shellfish. For instance, cd, pb, hg and as are biologically nonessential. Here in concentrations of eight toxic heavy metals such as chromium cr, copper cu, cadmium cd, lead pb, nickel ni, zinc zn, iron fe and manganese mn were determined. Pdf bioaccumulation of heavy metals in fish and prawn at. In general, the target tissues of heavy metals are metabolic active ones which accumulate high levels of metal in fish such as liver and gills, whereas in muscles where the metabolic activity is relatively low accumulates less level of heavy metals. Presentation overview bioaccumulation in aquatic organisms inverse relationship between accumulation factors e.
The present investigation aimed to assess the concentrations of selected heavy metals in water and sediments and their bioaccumulation in tissues of freshwater mussels and their histopathological effects on the digestive gland, gills, and gonads of anodonta cygnea. Aquatic organisms are often subject to bioaccumulation because they absorb contaminants from the water around them faster than their bodies are able to excrete them. An acad bras cienc 2016 88 1 bioaccumulation of heavy metal in a large catfish 141. Pdf in the present study, the bioaccumulation of heavy metals cr, cu, cd, pb content were determined in freshwater edible fishes cyprinus carpio. Heavy metals bioaccumulation in fishes restricts their use as a. Bioaccumulation of heavy metals in fish, squids and crustaceans from the red sea, jeddah coast, saudi arabia abstract fulltext html xml download as pdf size. Pdf bioaccumulation of heavy metals in fish from dobrudja. Pollutants in rivers or lakes are taken up by microorganisms like plankton and are eaten by aquatic organisms such as fish, which in turn are eaten by large birds, animals and humans. The effects of bioaccumulation on the ecosystem sciencing. Therefore the impact of heavy metals was carried out on the fish labeo rohita.
Pdf bioaccumulation of heavy metals in fish hydrocynus. The exposures to heavy metals cause increase or decrease in hematological indices, with decline in protein and glycogen reserves. Bioaccumulation of heavy metals in organs of fresh water. Aug 21, 2011 the main objectives of study were to monitor the metals concentrations, in freshwater fish species, carassius gibelio and esox lucius. The current study was aimed to determine the bioaccumulation heavy metals in fresh water fish clarius bactrachus walking catfish in cutm pond. Heavy meals concentrations in the aquatic organism depict the past as. This effect first appears in blood and affects the fishby alteration of blood c omponents making the fish weak, anemic and vulnerable to diseases.
The accumulation of heavy metals in fish species were analyzed at the end of the experimental period and compared with the experimental fish, which were exposed to the selected heavy metals table 1. Bioaccumulation of heavy metalssome of the substances that make up earths crust are elements, substances that cannot be naturally broken down into simpler substances. Heavy metal bioaccumulation in commercial lethrinidae fish. The exposures to heavy metals cause increase or decrease in hematological indices, with. This present research was conducted to assess the bioaccumulation of toxic heavy metals in fish before and after six months feeding with synthetic feed. Bioaccumulation of heavy metals in fish tilapia zilli and clarias gariepinus organs from river benue, north. The concentrations of heavy metals cu, zn, pb, cd, fe and mn were. Bioaccumulation of heavy metals zn, pb, cd, and cu was determined in the liver, gills, and flesh from benthic and pelagic fish species. Bioaccumulation of heavy metals and their histopathological. Bioaccumulation of heavy metals in t he dead fish samples was tested after aciddigestion of the fish and identif ication via icpms. Mar 10, 2008 the objective of the present study is to determine the bioaccumulation of heavy metals in various organs of the fresh water fish exposed to heavy metal contaminated water system. For the normal metabolism of the fish, the essential metals must be taken up from water, food or sediment canl.
The transfer factors of all metals in fish from water were greater than those from sediments. What are heavy metals, and what does it mean for them to bioaccumulate. Bioaccumulation of heavy metals in organs of fresh water fish. Due to their capability to bioaccumulate heavy metals, edible fishes have gained serious concern and importance as the consumption of wild and aquacultured fish increased elnabris et al. The buildup of heavy metals can cause malfunctions in the liver, kidneys, the circulatory system responsible for the circulation of blood throughout the body, and the movement of nerve signals. The problem in this study are different levels of heavy metals pb and cr on the tissues of fish in the upstream and downstream brantasriver, difference in levels of heavy metals can damage cells of fish in the upstream and 9. The acidic conditions of aquatic environment might cause free divalent ions of many heavy metals to be absorbed by fish gills 2. Bioaccumulation of some heavy metals in tilapia fish relevant. Heavy metals bioaccumulation and histopathological changes. Pdf bioaccumulation of heavy metals in fish, squids and. Zn was the highest accumulating metal in fish, whilst hg was the lowest and was well corroborated with those of water. Bioaccumulation of heavy metals in some tissues of fish in the. Bioaccumulation of heavy metals in some tissues of fish in the red.
Ttfs 1 do exist for several metals in the food chain with predatory gastropods at the top of the food web bmfs 1, when observed, are usually in found in low exposure environments bioaccumulation and potential for effects can be assessed by use of regression models. Bioaccumulation of mercury, cadmium, zinc, chromium, and. Bioaccumulation of heavy metals in fish from the chi river. Mercury, cadmium, lead and tin are the heavymetals most frequently endangering humanhealth. Proceedings of t he 7th asian pacific landfill sy mposium. Biomagnification occurs when substances such as pesticides or heavy metals move up the food chain by working their way into the environment. Bioaccumulation of heavy metals in fishes from taihu lake, china. The values of heavy metals were so far well within the maximum permissible standard value of heavy metals for drinking water and for fish culture as prescribed by various national and international agencies. In the present study, the bioaccumulation of heavy metals cr, cu, cd, pb content were determined in freshwater edible fishes cyprinus carpio linnaeus and pelteobagrus fluvidraco, which were caught from the meiliang bay, taihu lake, a large, shallow and eutrophic lake of china. Toxicity and bioaccumulation studies of heavy metals on a.
May 22, 20 heavy metals heavy metals enter the biosphere, they do notdegrade, and they can not be destroyed. The bioaccumulation of heavy metals varied between species, ages, sex and organs. Toxicity and bioaccumulation studies of heavy metals on a freshwater fish int j oceanogr aquac toxicity and bioaccumulation studies of heavy metals on a freshwater fish ezeonyejiaku cd1, okoye co2 and ezenwelu co3 1department of zoology, nnamdi azikiwe university awka, nigeria. In this study, the influence of ph, temperature and dissolved oxygen on the heavy metals distribution in fish tissue were studied. Bioaccumulation of toxic heavy metals in fish after feeding with synthetic feed. Bioaccumulation of heavy metals zn, pb, cd, and cu was determined in the liver, gills, and flesh from benthic and pelagic fish species collected from lake geriyo covering two seasons. Heavy metals bioaccumulation and histopathological changes in.
The bioaccumulation factors of fish tissues were calculated. Bioaccumulation of heavy metals and parasitic fauna in. Bioaccumulation of heavy metals in fish species from the meiliang bay, taihu lake, china article pdf available in toxicology reports 5. To study the bioaccumulation of heavy metals from synodontis clarias s. All enter the food chain through industrialwaste and bioaccumulate in aquatic andmarine environments. Fishes bioaccumulate heavy metals including cadmium, zinc, lead and copper through various organs such as gills, liver, stomach and. Bioaccumulation of trace mercury in trophic levels of. In the present study, some heavy metals cd, cr, cu, fe, ni and pb were seasonally determined in water, sediment and some tissues of cyprinus carpio from avsar dam lake, which is an important water source for irrigation and drinking in turkey. The gill is an important site for the entry of heavy metals heavy metals gills liver kidney flesh cr ni cd pb 0. The bioaccumulation of the heavy metals hm in the samples of the lake was quantified with a bio accumulation factor baf, defined as the ratio of the concentration of a specific heavy metal in the organism muscle and bone of the fish to the concentration of the metal in the lake water54. Bioaccumulation of heavy metals in some tissues of fish in.
Coastal fish such as the smooth toadfish and seabirds such as the atlantic puffin are often monitored for heavy metal bioaccumulation. Fishes are known for their innate potential to bioaccumulate heavy metals in their muscles and. In the present study, the bioaccumulation of heavy metals cr, cu, cd, pb content were determined in freshwater edible fishes cyprinus carpio. Metal mining, gold mining which utilizes mercury, electronic waste and industrial waste can all contribute heavy metals to the environment, endangering animals and humans alike. Bioaccumulation in aquatic organisms inverse relationship between accumulation factors e.
Reports using levels of heavy metals in fish to indicate and assess the contamination of heavy metals in water have been found to be very useful for environmental monitoring rashed, 2001. Bioaccumulation is essentially the buildup of contaminants such as heavy metals or pesticides in living organisms. In this research, the comparison on metals accumulation between all tissues of fish show that bioaccumulation of metals was more in the liver than other tissues. Bioaccumulation of heavy metals in fish species from the meiliang. Therefore, fish living in polluted waters tend to accumulate heavy metals in their tissues. Heavy metals under study in the edible parts of tilapia were within the safety permissible level for human use. The experimental fish was exposed to cr, ni, cd and pb at sublethal concentrations for periods of 32 days. In aquatic system they diffuse radially and fish often being on the top of aquatic food chain are more susceptible to the hazardous effects as compared to terrestrial vertebrates chezhian et al. Some other researchers also reported that fish muscle generally contained the lowest amounts of these metals 2, 28, 29. Studies on bio accumulation of heavy metals in clarius.
The bioaccumulation factor for different heavy metals from water to the two fish species was higher in the bone than flesh of the fish. Bioaccumulation of heavy metals in organs of fresh water fish cyprinus carpiocommon carp. The elements cd, pb, ni and cr were assayed using shimadzu aa 6200 atomic absorption spectrophotometery and. The problem in this study are different levels of heavy metals pb and cr on the tissues of fish. The contamination of the aquatic systems with heavy metals from natural anthropogenic sources has become a global problem which poses threats to ecosystems and natural communities. However, the bioaccumulation of the heavy metals was speciesrelated as the accumulations of the heavy metals analysed in the sampled fishes were of the following trend. Bioaccumulation of heavy metals in freshwater fish species. Suryawanshi department of zoology,yogeshwari mahavidyalaya, ambajogai, dist. The water of the dam and the liver of the fish were analyzed for zinc zn, cadmium cd, lead pb and iron fe concentrations and their bioaccumulation factors. Motahar hossain 1, liton chandra, abm hamidul haque and md. Pdf bioaccumulation of nonessential hazardous heavy.
Heavy metals include cadmium, chromium, cobalt, lead, mercury, nickel and tin, as well as some essential nutrients that are toxic in high doses. Bioaccumulation of heavy metals in fish barbodes sp. This trend is a decrease in a contaminant with an increase in trophic level and is due to higher concentrations of algae and bacteria to dilute the. Pdf bioaccumulation of heavy metals in fish species from the. Pdf bioaccumulation of heavy metals in fish species from. The tilapia zilli gills contained the highest concentration 52. We examined and compared heavy metals bioaccumulation in cyprinus carpio and labeo rohita netted from sardaryab, a tributary of river kabul. Bioaccumulation of heavy metals in fish, squids and. Bioaccumulation of heavy metals in water, sediments, and. The potential of locally occurring fish and crab species as bioindicators of copper. Bioaccumulation of toxic metals in fish oils capsules 3 absorption spectroscopy gfaas or refers to the determination of heavy metals in fish species 19, 20.
The increasing amounts of heavy metals entering aquatic environments can result in high accumulation levels of these contaminants in fish and their consumers. Heavy metal levels in water, sediment and fish samples were analyzed by inductively coupled. Bioaccumulation of heavy metals in fish sourced from environmentally stressed axis of river niger. Bioaccumulation of some heavy metals in tilapia fish. The concentrations of heavy metals in organs of fish show that the aquatic environment is polluted 3. The science of the total environment, 201 1997, pp. Water, sediments, and freshwater mussel samples were collected at four sites, that is, reference and polluted sites, along the. Researcharticle bioaccumulation of heavy metals in some tissues of fish in lake geriyo, adamawa state, nigeria a. Bioaccumulation of heavy metals in fishes of hashenge lake. Why is heavy metals bioaccumulation dangerous for your health. This led to the conclusion that fish bioaccumulation with these metals was from water. Bioaccumulation of mercury, cadmium, zinc, chromium. Bioaccumulation of heavy metals in fish species collected from former tin mining catchment ashraf, m. Bioaccumulation of heavy metals by clarias gariepinus journal of.
Contamination of freshwater fish with toxic heavy metals and metalloids is a major environmental issue in terms of public health. Eldahshan department ofveterinary hygiene and environmental pollution, faculty of veterinarymedicine, cairo university, egypt. Heavy metals pollution is thus targeting the major protein source in the form of fish. Determination of selected heavy metals and iron concentration in two common fish species in densu river at weija district in grater accra region of ghana. Methods a total of 50 specimens of each fish species n 100 were examined. Bioaccumulation and biomagnification denote the processes and pathways of heavy metal pollutants from one trophic level to others in the food. Pdf bioaccumulation of heavy metals in organs of fresh. Bioaccumulation of heavy metals in muscle tissue of fishes.
Bioaccumulation, toxicity, heavy metals, cadmium, zinc, lead, copper, freshwater fish introduction heavy metal according to dianne and william 1999 embraces any metal exposure to which is clinically undesirable and which constitute a potential hazard. Bioaccumulation and histopathological alterations of the. It affected predatory birds, including fish eating bald eagles, by thinning their egg shells, leading to a drop in their populations. Bioaccumulation of heavy metals in fish, squids and crustaceans from the red sea, jeddah coast, saudi arabia article pdf available in open journal of marine science 54.
River asa, bioaccumulation, heavy metals, clarias gariepinus, ilorin. Heavy metals heavy metals enter the biosphere, they do notdegrade, and they can not be destroyed. The objectives of this study were to quantify the concentration at trace level of total pb, cd, as and hg by means of icpms multielement method, in. The concentrations of heavy metals cu, zn, pb, cd, fe and mn were measured in the liver, gills and muscles of fourteen benthic and pelagic fish species. Analysis of major heavy metals in the available fish. The objective of the present study is to determine the bioaccumulation of heavy metals in various organs of the fresh water fish exposed to heavy metal contaminated water system. Heavy metals are natural elements thatin high dosesare poisonous to humans. Bioaccumulation of heavy metals is dangerous to human health. Bioaccumulation and potential for effects can be assessed by use of regression models.
468 970 1228 1468 1038 597 505 840 745 107 779 1214 770 79 1202 159 919 592 375 918 225 1187 630 1090 325 1181 1416 681 472 141 1450 1442 200 202 938 1352 876 801 1064 1445 355 81 1314 1298 833 399 1149