Feathers of white stork<i>Ciconia ciconia</i>chicks in North‐Eastern Greece, as indicators of geographical variation in mercury contamination

Goutner, Vassilis; Furness, Robert W.

doi:10.1080/02772249809358629

Cited by 11 publications

(3 citation statements)

References 33 publications

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“…Marabou storks have a longer fledging period than do fish eagles (165 days for marabou storks [Pomeroy, 1977] and 75 days for fish eagles [Sumba, 1988]) and therefore have a longer period of feather growth and potential accumulation of mercury in the growing feather with age. This pattern was also seen in white stork (Ciconia ciconia) chicks (Goutner and Furness, 1998) and is supported by the positive correlation between feather mercury concentration and body weight in marabou stork nestlings (Fig. 2).…”

Section: Mercurysupporting

confidence: 68%

Mercury and Persistent Organic Pollutant Concentrations in African Fish Eagles, Marabou Storks, and Nile Tilapia in Uganda

Hollamby

Afema-Azikuru²,

Sikarskie

et al. 2004

Journal of Wildlife Diseases

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The purpose of this research was to evaluate persistent organic pollutant (POP) and mercury concentrations in tissues of African fish eagles (Haliaeetus vocifer) and Nile tilapia (Oreochromis niloticus) from Lake Victoria near Entebbe and Lake Mburo, Uganda. Marabou stork (Leptoptilos crumeniferus) nestlings from urban Kampala (40 km from Entebbe) also were sampled for POPs and mercury. Total mercury was measured in the breast feathers of eight nestling and 10 adult African fish eagles from Lake Mburo, 10 nestling and five adult African fish eagles from Lake Victoria near Entebbe, and 20 nestling marabou storks from Kampala from June 2002 through January 2003. Mercury concentrations in all samples were below levels associated with adverse effects in similar species. Mercury concentrations were significantly higher in eagle adults and nestlings from Entebbe than in adults and nestlings from Lake Mburo (PՅ0.05). No significant differences (PՆ0.05) were found in mercury concentrations between sexes or between the entire fish eagle population sampled at Entebbe and marabou stork nestlings sampled at nearby Kampala. Plasma samples from the same birds were analyzed for 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane, aldrin, hexachlorocyclohexane (␣-HCH), dieldrin, endrin, heptachlor and their metabolites, as well as total polychlorinated biphenyls (PCBs). Nile tilapia whole-body cross sections collected from Lake Mburo (nϭ3) and Lake Victoria near Entebbe (nϭ8) also were analyzed for these POPs and mercury. No samples contained POPs or PCBs at the limits of detection except for 4,4Ј-1,1-dichloro-2,2-bis(4-chlorophenyl)ethylene in five adult eagle plasma samples (0.0026Ϯ0.0015 ppm wet weight) and five Nile tilapia samples (0.002Ϯ0.001 ppm wet weight) from Entebbe.

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Section: Mercurysupporting

confidence: 68%

Mercury and Persistent Organic Pollutant Concentrations in African Fish Eagles, Marabou Storks, and Nile Tilapia in Uganda

Hollamby

Afema-Azikuru²,

Sikarskie

et al. 2004

Journal of Wildlife Diseases

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“…Connell et al (2002) suggested that the threshold for adverse effects is 3 to 5 μg g −1 mercury in feathers of ardeids. Goutner and Furness (1998) summarized a variety of studies indicating that toxic effects of mercury may well vary among different bird species. One difficulty is that toxicity depends upon the form, dose, route of exposure, species, age, sex, and physiological condition (Eisler 1987).…”

Section: Resultsmentioning

confidence: 99%

Mercury levels in avian feathers from different trophic levels of eight families collected from the northern region of Iran

Mashroofeh

Bakhtiari

Ghobeishavi

et al. 2015

Environ Monit Assess

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Mercury levels were determined in feathers from 83 birds belonging to 18 species (eight families), all collected from the northern region of Iran. Mercury levels were evaluated in relation to taxonomic affiliation and feeding strategies. Mercury levels in the feathers were between 0.05 ± 0.01 and 1.10 ± 0.15 μg g(-1) dry weight, and there was a significant effect of taxonomic groups (p < 0.05). The highest mercury levels were found in Accipitridae, and mercury was not detected in the family Upupidae. The pattern for mercury levels was Accipitridae > Pelecanidae > Sternidae > Ardeidae > Anatidae > Rallidae > Phasianidae (p < 0.05). Significant differences (p < 0.05) in the mean mercury levels were found among species as a function of feeding method and trophic level. Mercury levels were highest in the carnivorous species and lowest in the herbivorous species. Mercury levels in feathers of birds in this study were generally below the thresholds reported to affect reproduction.

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“…As an apex bird species with opportunistic feeding habits, their diet mostly comprises of various invertebrates (grasshopper, beetles, earthworms, and crustaceans), amphibians, fish, snakes, lizards, small mammals (voles, mice, rats, and shrews), and, occasionally, trash from landfills [ 4 , 5 , 6 , 7 , 8 , 9 ]. White stork nestlings are fed on local food sources, foraged by their parents, making them suitable bioindicators and sentinels of contaminants in a local environment [ 10 , 11 ]. A decline in the breeding population of storks is related to decreasing availability of grasslands and wetlands and increase in anthropogenic activities, especially intensive agriculture [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Non-Destructive Methods: Biomarker Assays in Blood of White Stork (Ciconia ciconia) Nestlings

Bjedov

Mikuška

Lackmann

et al. 2021

Animals

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White stork (Ciconia ciconia) nestlings can provide quantitative information on the quality of the surrounding environment by indicating the presence of pollutants, as they depend on locally foraged food. This study represents the first comparison of biomarkers in two fractions of white stork nestling blood: plasma and S9 (the post-mitochondrial fraction). The aim of this study was to evaluate acetylcholinesterase (AChE), carboxylesterase (CES), glutathione S-transferase (GST), and glutathione reductase (GR), as well as to establish a novel fluorescence-based method for glutathione (GSH) and reactive oxygen species (ROS) detection in plasma and S9. Considering the enzymatic biomarkers, lower variability in plasma was detected only for AChE, as CES, GST, and GR had lower variability in S9. Enzyme activity was higher in plasma for AChE, CES, and GST, while GR had higher activity in S9. Regarding the fluorescence-based method, lower variability was detected in plasma for GSH and ROS, although higher GSH detection was reported in S9, and higher ROS was detected in plasma. The present study indicated valuable differences by successfully establishing protocols for biomarker measurement in plasma and S9 based on variability, enzyme activity, and fluorescence. For a better understanding of the environmental effects on nestlings’ physiological condition, biomarkers can be measured in plasma and S9.

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Feathers of white storkCiconia ciconiachicks in North‐Eastern Greece, as indicators of geographical variation in mercury contamination

Cited by 11 publications

References 33 publications

Mercury and Persistent Organic Pollutant Concentrations in African Fish Eagles, Marabou Storks, and Nile Tilapia in Uganda

Mercury and Persistent Organic Pollutant Concentrations in African Fish Eagles, Marabou Storks, and Nile Tilapia in Uganda

Mercury levels in avian feathers from different trophic levels of eight families collected from the northern region of Iran

Application of Non-Destructive Methods: Biomarker Assays in Blood of White Stork (Ciconia ciconia) Nestlings

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