Heavy metals and hydrocarbon concentrations in water, sediments and tissue of Cyclope neritea from two sites in Suez Canal, Egypt and histopathological effects (original) (raw)
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Egyptian Journal of Aquatic Biology and Fisheries
The quality of water in Lake Burullus was investigated to evaluate its effect on certain biochemical and histological aspects on Biomphalaria alexandrina snail and Oreochromis niloticus fish. The examined lake water quality criteria showed high levels of total dissolved solids (TDS), conductivity (EC), and levels of Pb and Fe. Sites that adjacent to point of discharging of waste waters showed higher levels of heavy metals and the least levels in dissolved oxygen (DO). The results showed that most of the examined biochemical parameters indicated affected liver (high levels in AST, ALP & TP and alteration in glucose & urea levels). Samples of Bahr Tera site in El-Hamoul center and Shakhloba site in Sidi-Salem were the most affected, while samples of Prempal site in Mottobus center were the least. Snails' histopathological examination showed degeneration, edema, hyper trophy and vaculation in head-foot muscles, degeneration and necrotic changes in the digestive gland, irregular shape in mature ova and reduction in sperm number in hermaphrodite gland. As well, fish histopathological investigation illustrated by necrotic change in most examined organs, the common features were: fiber splitting in muscles, cognation of blood vessels of gill filaments, vacuolar degeneration in liver and atrophy in glomeruli and epithelial cells of renal tubules in kidney. It was concluded that Lake Burullus water quality in wastewater discharge areas, adversely affects B. alexandrina snails and O. niloticus fish, and both can be used as bio-indicators for the presence of pollutants in their habitats.
Egyptian Academic Journal of Biological Sciences, B. Zoology, 2019
The dominant molluscan speciesPatella caerulea was selected as a trace metals bio indicator. During winter and summer 2016, its specimens were scraped from El-Mex Bay. Concentrations of heavy metals in the water, sediments andPatella caerulea (shells and soft tissues) were determined. Cadmium (Cd), lead (Pb), copper (Cu), iron (Fe), nickel (Ni), manganese (Mn) and zinc (Zn) concentrations (conc.) during summer were higher than winter except for shells which had Cd conc. in summer lower than winter, water showed Cu conc. in winter more than summer, Fe appeared higher conc. in water and Patellacaerulea during winter more than summer, Mn had higher conc. in water and sediments than summer, Ni had higher conc. in water and soft tissues during winter than summer and Zn in water during summer is lower than winter. The bioaccumulation factors (BAFs) ofCd, Pb, Cu, Fe inPatellacaerulea shells were more than soft tissues, also they were more in winter than summer except that of Cu in winter w...
Bioaccumulation of heavy metals in freshwater snails in relation to lining of water courses in Egypt
Journal of Bioscience and Applied Research, 2016
The present study was aimed to determine the heavy metal concentrations in whole body of fresh water snails in relation to lining of water courses in two governorates (Behaira (Nubaria) and Giza) Through four successive seasons from Septemper 2013, to October 2014. The obtained results indicated that the electrical conductivity (EC) and iron metal (Fe) showed the highest values and generally the physicochemical measurements indicated that no significant difference between the two tested habitats, however, the conductivity of water in lined water bodies was lower than those of unlined ones. The present study recorded 14 species of snails belonging to class Gastropoda; these species belonged to Pulmonate and Prosobranch snails. The density of all recorded Pulmonate snails in lined sites were lower than those in unlined ones. On the other hand, the abundance of Prosobranch snails was higher in numbers in the lined sites than those in the unlined. In Nubaria the most abundant snails were Melanoides tuberculata and Theodoxus niloticus and exhibited their maximum percentages in the lined (82.15%) and unlined (72.34%) sites during summer, respectively. While, in Giza Governorate Physa acuta snails had the highest percentages among collected snails approximately at all seasons, and exhibited its maximum percentages during spring in lined (90.22%) and unlined sites (85.38%). Correlations between physicochemical parameters and the collected snails, revealed that there were different negative or positive correlations depending on the sites of investigation. The bioconcentration factor of heavy metals in snail's soft tissues at the investigated in lined and unlined sites compared to the content of the metals (Cd, Cu, Fe, Pb and Zinc) in the water showed high variation in BCF values depending on the type of metal and the snail. Generally P. acuta (7626.95μg.g-1 DW for Fe) and H. duryi (8787.10 μg.g-1 DW for Cu) were the highest snails of accumulated metal contents in the tested sites of the two surveyed governorates, respectively.
Journal of Marine Systems, 2004
Concentrations of Cd, Pb, Cu and Zn were determined in water, sediments, gastropod (Bulla umpulla) and green algae (Ulva lactuca) collected from five stations in the western side of the northern part of the Gulf of Suez during the period February 1993 -January 1994. Sediments recorded the highest concentrations of Cd (2.26 -4.40 Ag/g) and Pb (13.90 -28.34 Ag/g), While the highest concentrations of the essential metals Cu and Zn were found in B. umpulla (28.19 -72.04 and 60.24 -108.74 Ag/g, respectively). Water and sediments showed similar spatial distribution patterns for the highest mean values of the different metals. Highest values of the studied metals were found at stations influenced by various pollution sources such as harbours, and sewage and industrial drains. In contrast, the lowest concentrations were observed faraway from any pollution source. Calculations of concentration factors (C.F.) for gastropod and algae showed highest C.F. of Cd (4312.5 -8705.9) and Pb (2103.3 -8317.9) in algae, and highest C.F. of Cu (5288.9 -42376.5) and Zn (3686.7 -9631.5) in gastropod. D
2021
A comprehensive environmental assessment of the Arabian Gulf Coast in the State of Kuwait was carried out by assessing levels of heavy, toxic and rare mineral pollutants in coastal sediments, beach sand, shells and sea water collected from the coastline. By Using (Inductively coupled plasma Mass spectrometry) ICP-MS technique, we analyzed (Al, Mn, Mg, Na, K, Ca, Zn, Ba, Sr, Co, Cu, Cd, Pb, Ag, Ni, Fe). The results of potential environmental risks indicated that the study area was heavily enriched with (Al, Mn, Mg, Na, K, Ca), moderately enriched with (Zn, Ba, Sr, Co), and low levels of (Cu, Cd, Pb, Ag, Ni, Fe). However, in general, these pollutant levels were not exceed the EPA and the Canadian ISQG values and still lower than some standardized reference values all over the world. Furthermore, the bioaccumulation index indicated that gastropod shells and pelecypod shells had greater ability to concentrate Fe, Na, K and Al, which may be attributable to the shape of them. Regarding th...
Clinical Biochemistry, 2011
This study aims to identify and determine species diversity and richness of the Gastropods of the intertidal zone of Bushehr seaport coastal area and assess the ecological status of this area using Welch index. Sampling was carried out at 6 stations in Bushehr seaport in the winter and summer seasons during 2013-2014. Bed sediment sampling was done three times in each station and Gastropod samples were collected using Quadrate (25×25 cm), and were then preserved using 4 % buffered formalin. The preserved samples were transported to the laboratory and were identified and counted by using valid identification keys. Furthermore, physicochemical properties of water including temperature, pH, dissolved oxygen (DO) and salinity were also measured in each station. According to the results obtained from this study, there were totally 14 species identified from 12 families belonging to 7 orders. The most abundantly identified species in the studied stations belonged to Planaxis sulctus, Cerithidea cingulate, and Anachis misera. In this study species diversity was determined by using Shannon-Weiner index, dominant species were investigated using Simpson index and species richness was calculated using Margalef index. The results of Shannon and Margalef indexes showed significant differences between the sampled stations and seasons (p˂0.05). Moreover, the results of Simpson index showed no significant differences between the sampled stations and seasons (p<0.05). Results of Welch index showed that based on the mentioned indexes in the sampled stations the status of the water quality was classified as average and rather low/weak pollution.
Marine molluscs as biomonitors for heavy metal levels in the Gulf of Suez, Red Sea
Journal of Marine Systems, 2006
Levels of the heavy metals Copper (Cu), Zinc (Zn), Lead (Pb), Cadmium (Cd), Chromium (Cr), Nickel (Ni), Iron (Fe) and Manganese (Mn) were determined in coastal water, sediments and soft tissues of the gastropod limpet, Patella caerulea, and the bivalve, Barbatus barbatus, from seven different stations in the western coast of the Gulf of Suez. The concentrations of heavy metals in water ranged between 3.
Gastropod shells as pollution indicators, Red Sea coast, Egypt
Thirty samples of gastropod shells belonging to Nerita albicilla and Canarium (Gibberulus) gibbosus from 15 stations along the Egyptian Red Sea coast were selected for chemical analysis. The analysis indicated that Nerita is a geochemical marker for a sizeable group of trace elements including; Cu, Pb, Zn, Ag, Th, Ba, Tl, S, Sc and Se, while Canarium is a good accumulator of the elements, Mo, U, Au and K. Both species have the same selectivity for Ni, Mn, Fe, As, Sr and P. The differences in sensitivity between the two species are attributed to the mode of life and incorporation of the elements within the crystal lattice of calcium carbonates composing the shells. On basis of the obtained data, the study area can be subdivided into three zones namely; almost pristine, moderately polluted zone and markedly polluted. Pollution is mostly attributed to anthropogenic sources.
2012
East Hammar marsh in south of Iraq has enormous environmental importance. It represents habitats for biodiversity of different organism as mollusca (snails). Determination of concentration and distribution of cadmium(Cd), copper(Cu), lead(Pb) and zinc(Zn) in water (as dissolved and particulate matter), sediments and three species of freshwater snails Bellamya bengalensis, Lymnaea auricularia and Melanoides tuberculata were carried out during September 2007 to September 2008 in four selected stations of East Hammar marsh. Some environmental parameters of the marsh were measurements included water temperature, pH, dissolved oxygen, salinity, as well as total organic carbon in sediments. Flame atomic absorption spectrophotometers in addition to other suitable tools were used throughout this study. Total concentrations in the snail were higher than water and sediment whereas B. bengalensis recorded the highest values in contrast with L. auricularia and M. tuberculata. Seasonal variation...