The importance of exogenous contamination on heavy metal levels in bird feathers. A field experiment with free-living great tits, Parus major

2004 ◽  
Vol 6 (4) ◽  
pp. 356 ◽  
Author(s):  
Jaspers Veerle ◽  
Dauwe Tom ◽  
Pinxten Rianne ◽  
Bervoets Lieven ◽  
Blust Ronny ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Field Experiment ◽  
Parus Major ◽  
Free Living ◽  
Metal Levels

Accumulation of heavy metals by intestinal helminths in fish: an overview and perspective

Parasitology ◽  
2003 ◽  
Vol 126 (7) ◽  
pp. S53-S60 ◽  
Author(s):  
B. SURES
Keyword(s):  
Heavy Metal ◽  
Metal Accumulation ◽  
Heavy Metal Contamination ◽  
Intestinal Parasites ◽  
Intestinal Lumen ◽  
Intestinal Helminths ◽  
Intermediate Hosts ◽  
Free Living ◽  
Metal Levels ◽  
Host Tissues

Intestinal helminths of fish are of increasing interest as potential bioindicators for heavy metal contamination in aquatic habitats. Among these parasites cestodes and acanthocephalans in particular have an enormous heavy metal accumulation capacity exceeding that of established free living sentinels. Metal concentrations several thousand times higher in acanthocephalans than in host tissues were described from field and laboratory studies. Whereas larval stages inside their intermediate hosts are not able to take up high quantities of metals, young worms begin to take up metals immediately after infection of the final host. After four to five weeks of exposure, the parasites reach a steady-state concentration orders of magnitude higher than the ambient water level. Thus, acanthocephalans are not only very effective in taking up metals, but they can also respond very rapidly to changes in environmental exposure. The mechanism which enable acanthocephalans to take up metals from the intestinal lumen of the host appears to be based on the presence of bile acids, which form organo-metallic complexes that are easily absorbed by the worms due to their lipophilicity. Investigations of the environmental conditions affecting metal uptake have shown that the parasites are more consistent and reliable indicators for metal pollution than the host tissues as metal levels of the latter are much more dependent on the water chemistry. Thus, after some years of research on the uptake of metals by acanthocephalans and on the factors affecting metal accumulation in intestinal parasites it should be asked if acanthocephalans meet the criteria commonly accepted for sentinels. If parasites can be considered as promising sentinels, we need reasons for the establishment of ‘new’ indicators. Therefore, this review summarises the present knowledge about parasites as bioindicators and compares the accumulation properties of parasites and established free living indicators. Finally, this review presents possible answers to the question why it could be advantageous to have new and even more sensitive indicators for environmental monitoring purposes.

scholarly journals The Analysis of Heavy Metal Concentrations in Eggs of Collared Flycatchers, Ficedula Albicollis (Passeriformes, Muscicapidae), and Tits, Parus Major, Parus Caeruleus (Passeriformes, Paridae), in Different Areas of North-Eastern Ukraine

2016 ◽  
Vol 50 (3) ◽  
pp. 259-266 ◽  
Author(s):  
A. B. Chaplygina ◽  
D. I. Yuzyk
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Parus Major ◽  
Normal Growth ◽  
Parus Caeruleus ◽  
Ficedula Albicollis ◽  
Metal Concentrations ◽  
Forest Park ◽  
Heavy Metal Concentrations ◽  
Metal Levels

Abstract Collared flycatchers (Ficedula albicollis Temminck, 1815), have more opportunities to accumulate heavy metals due to migration but they are more resistant to contamination in contrast to tits, (Parus major Linnaeus, 1758, Parus caeruleus Linnaeus, 1758). This research aimed to detect concentrations of some trace elements in eggs of the collared flycatcher, great tit and blue tit in different areas. There were found differences in heavy metal concentrations in the eggs among species and study areas. For collared flycatchers there were not established consistent patterns of changes in element concentrations among areas. The highest heavy metal levels were found in tits in samples of egg contents from a forest park (Pb - 3.1410 ± 0.3249, Cu - 19.3290 ± 1.4840, Zn - 66.9612 ± 17.6665, Fe - 249.5513 ± 40.2800, Mn - 6.9032 ± 0.2946, Ca - 8298.3570 ± 0.1080, Sr - 17.6032 ± 0.7512, Ni - 0.5177 ± 0.0220). The lowest concentrations were found in egg contents of tits in Hetmanskyi National Nature Park (Cu - 4.3492 ± 0.2079, Fe - 44.6647 ± 0.2627, Mn - 1.3194 ± 0.2374, Ca - 998.7001 ± 0.0006, Ni - 0.2443 ± 0.0439, Cr - 0.1466 ± 0.0424). The results indicate that heavy metals accumulated differently in shells and contents of eggs of collared flycatchers and tits in each of the study area. Some of microelements (zinc, mercury, iron, manganese, selenium and iodine) in small amounts are required for normal growth and development of birds. Heavy metal concentrations in egg shells and egg contents of all species did not exceed permissible levels.

Chemical and Biological Changes in Nelson Lake, Ontario Following Experimental Elevation of Lake pH

1977 ◽  
Vol 12 (1) ◽  
pp. 213-232 ◽  
Author(s):  
N.D. Yan ◽  
W.A. Scheider ◽  
P.J. Dillon
Keyword(s):  
Heavy Metal ◽  
Lake Ontario ◽  
Background Concentrations ◽  
Precambrian Shield ◽  
Metal Levels ◽  
Zooplankton Communities ◽  
Shield Lakes

Abstract Intensive studies of Nelson Lake, a Sudbury area lake of intermediate pH ~5.7), were begun in 1975. The chemistry of the lake was typical of that of most PreCambrian Shield lakes except that low alkalinities and high sulphate concentrations were observed along with elevated heavy metal levels. After raising the pH of Nelson Lake to 6.4 by addition of Ca(OH)2 and CaCO3, the metals were reduced to background concentrations. Phytoplankton and Zooplankton communities, which at pH of 5.7 were typical of PreCambrian lakes, were not affected by the experimental elevation of lake pH.

Oxidative Stress and Heavy Metal Levels of Pholiota limonella Mushroom Collected from Different Regions

2018 ◽  
Vol 12 (2) ◽  
pp. 169-172 ◽  
Author(s):  
Mustafa Sevindik ◽  
Hasan Akgul ◽  
Celal Bal ◽  
Deniz Altuntas ◽  
Ali Imran Korkmaz ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Heavy Metal ◽  
Metal Levels

scholarly journals Heavy metal levels in cattle egrets (Bubulcus ibis) foraging in some abattoirs in Lagos State metropolis

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Elijah Abakpa Adegbe ◽  
Oluwaseyi Oluwabukola Babajide ◽  
Lois Riyo Maina ◽  
Shola Elijah Adeniji
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Accumulation ◽  
Heavy Metal Contamination ◽  
Heavy Metal Accumulation ◽  
Bubulcus Ibis ◽  
Significant Difference ◽  
Metal Levels ◽  
Lagos State ◽  
The Mean

Abstract Background Heavy metal accumulation in the ecosystem constitutes a potential toxic effect which is hazardous to human health. Increasing environmental pollution has necessitated the use of cattle egrets to evaluate the levels of heavy metal contamination, to establish their use in biomonitoring of heavy metals and to provide data for monitoring pollution in the environment. Results The present study assessed the utilization of Bubulcus ibis in monitoring pollution in five abattoirs, namely Agege, Bariga, Kara, Itire and Idi-Araba, all situated in Lagos State. The concentration of five (5) heavy metals, cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) was determined in the liver, muscle and feather of Bubulcus ibis using the atomic absorption spectrophotometer. The trend of metal accumulation was in the order: Zn > Cu > Pb > Cd > Ni for all the sampled tissues. The mean tissue concentrations of the metals were significantly different (p < 0.05) among the sites. The highest levels of metal concentration were reported in the liver in all the locations. Mean concentration of Cd in Kara (0.003 ± 0.00058) was significantly (p < 0.05) higher than those found at Agege (0.0013 ± 0.00058) and Idi-Araba (0.001 ± 0.001). A significant difference (p < 0.05) was also observed between the mean concentrations of Cu in Bariga (0.01 ± 0.001) and Idi-Araba (0.003 ± 0.001). Conclusion All the studied heavy metals were present in the liver, muscle and feathers of the cattle egrets. The contamination levels were ascertained from the study which indicated that cattle egrets are useful in biomonitoring studies and the generated data will serve as baseline data which could be compared with data from other locations for monitoring heavy metal pollution.

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