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154 results for “Heavy metals”
Heavy metal pollution exposure affects egg coloration but not male provisioning effort in the pied flycatcher Ficedula hypoleuca
<p>Heavy metal pollution is known to negatively affect numerous traits in birds, including foraging, metabolism, immunity, and reproductive success. In this study, our primary aim was to assess the impact of metal pollution exposure on the visual appearance of the pied flycatcher (<em>Ficedula hypoleuca</em>) eggs. Specifically, we focused on blue-green biliverdin-based coloration, a trait expected to function as a signal of female quality to males. In line with the sexually selected egg coloration (SSEC) hypothesis, which posits that males respond to more intensely colored eggs by increasing their provisioning effort, our second objective was to investigate whether metal pollution exposure affects this specific signaling mechanism and subsequent male behavior. Our results showed that although coloration did not correlate with female quality or male provisioning effort, egg blue-green coloration decreased in polluted areas compared to non-polluted control areas. Our analysis of reflectance data revealed that this difference was due to an increased ultraviolet reflectance of eggs from polluted areas, likely caused by changes in eggshell microstructure (e.g. porosity). We therefore propose that metal pollution exposure may compromise crucial color signals of bird eggs. Avian visual modeling indicated that eggs laid by different flycatcher females are generally very similar, making discrimination by males challenging and perhaps impossible especially in dark cavities. Overall, our results suggest that the SSEC hypothesis may lack adaptive relevance for the pied flycatcher in Northern Europe, even in environments influenced by anthropogenic activities.</p>
Figure 4 in Bioaccumulation of heavy metals in the tissues of Schizothorax plagiostomus at River Swat
Figure 4. Concentration of heavy metals in muscles of Schizothorax plagiostomus
Figure 6 in Bioaccumulation of heavy metals in the tissues of Schizothorax plagiostomus at River Swat
Figure 6. Concentration of Nickel (ppm) in the muscles and gills of S. plagiostomus.
Figure 5 in Bioaccumulation of heavy metals in the tissues of Schizothorax plagiostomus at River Swat
Figure 5. Concentration of heavy metals in gills of Schizothorax plagiostomus
Figure 1 in Heavy metal (cadmium, lead, and chromium) contamination in farmed fish: a potential risk for consumers' health
Figure 1. Map of the study area.
Figure 2 in Heavy metal accumulation as a threat to the endangered Egyptian vulture (Neophron percnopterus L.) in Turkey
Figure 2. Distribution of As values for calamus and vane (Z= –2.49, P = 0.01).
Figure 1 in Heavy metal accumulation as a threat to the endangered Egyptian vulture (Neophron percnopterus L.) in Turkey
Figure 1. Study area and the sampled nests.
Figure. Location of the Beyşehir and Eğirdir lakes in Türkiye. in Health risk assessments of heavy metal concentrations via consumption of an invasive species, Carassius gibelio, from two large freshwater lakes of Türkiye
Figure. Location of the Beyşehir and Eğirdir lakes in Türkiye.
Distribution of heavy metals in coastal sediments under the influence of multiple factors: A case study from the south coast of an industrialized harbor city (Tangshan, China)
<p><span>This research investigated the spatial distribution of heavy metals, including mercury (Hg), cadmium (Cd), copper (Cu), arsenic (As), nickel (Ni), lead (Pb), chromium (Cr), and zinc (Zn), in surface sediments from the coastal area near to an industrial harbor (the Tangshan Harbor, China) with 161 sediment samples. The results showed that the distribution patterns of Cr, Cu, Zn, Ni, and Pb were similar to each other, high in the northwest, southeast, and southwest regions of the study area and low in the northeast region, which corresponded well with components of sedimental sizes. The uncontaminated specimen proportions for Hg, Cd, Cu, As, Ni, Pb, Cr, and Zn were 6.8%, 4.3%, 31.1%, 28.6%, 42.9%, 64.6%, 44.7%, and 50.3%, respectively. Based on principal component analysis (PCA) and positive matrix factorization (PMF), four distinct sources of pollution were quantitatively attributed, including agricultural activities (22.08%), fossil fuel consumption (24.14%), steel production (29.78%), and natural sources (24.00%). Hg (80.29%), Cd (82.31%) and As (65.33%) in the region's coastal sediments were predominantly contributed by fossil fuel, steel production and agricultural</span> <span>sources, respectively. Cr (40.00%), Cu (43.63%), Ni (47.54%), and Zn (38.98%) were primarily of natural lithogenic origin, while Pb mainly came from the mixed sources of agricultural activities (36.63%), fossil fuel (36.86%), and steel production (34.35%). Multiple factors played important roles in the selective transportation of sedimentary heavy metals, especially sediment properties, and hydrodynamic sorting processes in the study area.</span></p>
Heavy metals in human milk
<p>In this study, the concentrations of six heavy metals in human milk samples collected four weeks after delivery in one of the two largest e-waste recycling areas in China, that is, Taizhou, Zhejiang Province, were measured.</p>
Associations between sensitivity to antibiotics, disinfectants, and heavy metals in natural, clinical and laboratory isolates of Escherichia coli
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Heavy metal pollution exposure affects egg coloration but not male provisioning effort in the pied flycatcher Ficedula hypoleuca
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Digital research data from: Evaluation of a pH- and time-dependent model for the sorption of heavy metal cations by poultry litter-derived biochar
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Experimental data on the effects of heavy metal compounds on the development, survival, and bioaccumulation patterns in <em>Calliphora vicina</em> larvae
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Data from: Urban heavy metal contamination limits bumble bee colony growth
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Data for: Can heavy metal pollution induce soil bacterial community resistance to antibiotics in boreal forests?
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Heavy metal pollution enhances pathogen resistance of an invasive plant species over its native congener
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Data from: The rainfall effect onto solidification and stabilization of heavy metal-polluted sediments
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Distribution of heavy metals in coastal sediments under the influence of multiple factors: A case study from the south coast of an industrialized harbor city (Tangshan, China)
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Soil microbe-induced plant volatiles can alert neighboring plants for tolerating heavy metal stress
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International Brain Laboratory public data
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OpenNeuro
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