The Toxicity Ranking of Four Heavy Metals of Industrial Source to Six Resident Animals of a Tropical Estuarine Lagoon

Oyewo, E.O.; Don-Pedro, Kio N.

doi:10.1080/716067226

Cited by 7 publications

(5 citation statements)

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“…It is clear from the present study that DNA damage much attributed with iron than copper. The matter which may alter the documented order of toxicity of metals is that copper is more toxic than iron [41]. Our study proved that this fact may not be true at the subcellular level of toxicity.…”

Section: Discussionmentioning

confidence: 52%

Oxidative stress and DNA damage in relation to transition metals overload in Abu-Qir Bay, Egypt

Aboul-Ela

Saad

El-Sikaily

et al. 2011

Journal of Genetic Engineering and Biotechnology

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The aim of the present study is to evaluate the transition metals overload in Abu-Qir Bay in Egypt, as compared to a less polluted area (reference area) through some biomarkers of oxidative stress. Catalase enzyme activity, malondialdehyde (MDA) concentration and DNA damage (number of apurinic/apyrimidinic sites) were the tested biomarkers. The levels of iron and copper in Mugil cephalus liver tissues were significantly higher in samples from the polluted area as compared to the reference area: Fe: 407 ± 38 vs. 216 ± 21 lg/g wet wt; p = 0.008, Cu: 54 ± 6 vs. 17.7 ± 4 lg/g wet wt; p = 0.0001. This could account for the observed increase in MDA concentration (15.7 ± 5.7 vs. 2.5 ± 0.5 U/g; p = 0.035), and the elevated number of AP sites (13.9 ± 2.6 vs. 0.37 ± 0.2 AP site/1 · 10 5 bp; p = 0.0001). Similarly, the activity of catalase enzyme responsible for the cellular defense was significantly high (58.3 ± 12.2 vs. 28.4 ± 4.0 U/mg; p = 0.032). The present data indicated a clear relationship between the pollution degree of the above marine environment and both biochemical and molecular responses of the piscine system.

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Section: Discussionmentioning

confidence: 52%

Oxidative stress and DNA damage in relation to transition metals overload in Abu-Qir Bay, Egypt

Aboul-Ela

Saad

El-Sikaily

et al. 2011

Journal of Genetic Engineering and Biotechnology

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“…Figure 10 shows the amount of Pb in birds and plants compared to the WHO maximum permissible limit (WHO MPL) and the average of all the recorded values for each. The levels of Pb in birds and plants were all below the WHO maximum permissible limit of 2 ppm [52] and 7 ppm [53], respectively. This possibly suggests that Pb concentration is yet to exceed the threshold level to elicit adverse effects on the well-being of plants, birds, and, in the long run, higher animals (humans) who may consume them, thereby resulting in many negative effects on human bodies such as damaging kidneys, the nervous system, and the reproductive system.…”

Section: Mean Concentration Of Pb In Comparison With Who Maximum Perm...mentioning

confidence: 85%

“…Pb detected in birds was compared to the World Health Organization maximum permissible limit (WHO MPL) of 2 ppm, as described by Pain, et al [52]. Also, the 7 ppm WHO MPL standard for plants, as cited in Oyewo, [53], was used for comparison with the Pb values detected in plants surveyed.…”

Section: Maximum Permissible Limits Of Pb In Birds and Plantsmentioning

confidence: 99%

"Comparative Study on Bioaccumulation of Lead (Pb) in Some Birds and Plant Species in Rapidly Degrading Mining Sites in Three Selected Local Government Areas of Nasarawa State, Central Nigeria"

2023

BJSTR

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Heavy metals are an integral part of nature and play an important role in the lives of living species at trace levels. These become toxic when in excess in the organisms. Therefore, this study investigated the bioaccumulation of lead (Pb) in some birds and plant species in rapidly degrading mining sites in three selected Local Government Areas (LGAs) of Nasarawa State, Central Nigeria, from June 2017 to May 2018. Birds were trapped using mist nets. Ninety (90) tail feathers of birds and forty-eight (48) tree stand leaf samples were collected for quantitative measurements of Pb using the Atomic Absorption Spectrophotometer (AAS). A total of ninety (90) individual birds belonging to thirty five (35) species were trapped. Eighty-nine percent (89%) of the species were passerines while non-passerines were only 11%. The non-passerines accumulated more Pb than the passerines; however, there was no significant variation (t = 2.2312, df = 9.7714, P = 0.05034) between bird groups. Bird species-specific Pb bioaccumulation was highest in Shikra (3.24 ppm). The carnivorous birds had the highest Pb concentration, yet there was no significant difference (P > 0.05) in relation to the other feeding guilds. Pb concentration was not significant (P > 0.05) between birds' age groups and sexes, respectively. The respective differences in mean Pb concentration in bird feathers as well as plant leaves across the surveyed sites significantly varied (P < 0.05). Ficus plant Pb concentration was highest over the other three plant species, although not significant (P > 0.05). The association in bioaccumulation of Pb between plants and birds was negative (t = -1.4223, df = 88, P = 0.1585, r = -0.15). The pooled average Pb bioaccumulation in birds as well as plants, respectively, was negligibly below the World Health Organization threshold (maximum permissible limit), which would have had an adverse effect. In conclusion, in the long term, Pb bioaccumulation might have more severe consequences for non-migratory species from the checklist of birds recorded in this study that carry out their entire life functions within a confined area. Thus, there is an urgent need for continuous bio-monitoring using this non-invasive technique, which will aid regulatory agencies in collaborating with miners and local communities to explore safer mining practices in order to conserve biodiversity in light of the detrimental effects of Pb bioaccumulation.

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“…The concentration of metal transfer efficiencies varies from tissue to the skeleton (Esslemont, 2000). Oyewo and Don-Pedro (2002) reported from Lagos, Nigeria that the heavy metal pollution from industrial effluents and drainage channels, especially Hg as the most toxic to all test species followed by Cu, Mn and Fe and Cypris sp. is the most tolerant species.…”

Section: Ironmentioning

confidence: 97%

Sediment geochemistry with population of recent benthic ostracoda in Palk Bay, southeast coast of India

et al. 2015

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Seasonal observation on trace elements of shallow inner shelf sediments and their correlation with the population of recent benthic ostracoda off Rameswaram, Ramanathapuram District, Tamil Nadu, Southeast coast of India is the aim of this study. The sediments were analysed for trace elements Al, Fe, Mn, Zn, Cu, Pb, Cd, Ni, Co and Cr and being correlated with the population of benthic ostracoda for four different seasons. Cu has a positive correlation, and Fe, Mn, Zn, Pb, Cd, Ni, Co and Cr have negative correlation with the total population of ostracoda. Al has no considerable correlation with the total population of ostracoda. In the middle segment plenty of corals were found in the study area and their effect being discussed.

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The Toxicity Ranking of Four Heavy Metals of Industrial Source to Six Resident Animals of a Tropical Estuarine Lagoon

Cited by 7 publications

References 0 publications

Oxidative stress and DNA damage in relation to transition metals overload in Abu-Qir Bay, Egypt

Oxidative stress and DNA damage in relation to transition metals overload in Abu-Qir Bay, Egypt

"Comparative Study on Bioaccumulation of Lead (Pb) in Some Birds and Plant Species in Rapidly Degrading Mining Sites in Three Selected Local Government Areas of Nasarawa State, Central Nigeria"

Sediment geochemistry with population of recent benthic ostracoda in Palk Bay, southeast coast of India

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