Heavy Metals and Hydrocarbons in Sediments from Three Lakes from San Miguel, Chiapas, Mexico

Pascual-Barrera, A.; Gold-Bouchot, Gerardo; Ceja-Moreno, V.; Río-García, Marcela Del

doi:10.1007/s00128-004-0491-0

Cited by 13 publications

(12 citation statements)

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“…Technical and financial restrictions prevented data collection on pollutants other than PAHs of each individual tilapia used in the experiment. However, during fieldwork (Olvera-Novoa et al, 2002;Pascual-Barrera et al, 2004), data were collected for heavy metals, PCBs, PAHs, and pesticide concentrations in the lake sediments used in this experiment. Given the limitation, we estimated the effect of these pollutants by using these data and individual tilapia as replication units, and then assigning the pollutant concentrations of a specific lake to all the biological variables of each tilapia exposed to the sediments of that lake.…”

Section: Discussionmentioning

confidence: 99%

“…However, in view of the information recently published by Shailaja et al (2006) about the synergic effects of ammonia and PAHs, our initial considerations were clearly wrong. To guarantee that the water used for both experimental treatments and control was free of pollutants, it was examined for all the pollutants listed in Table I following the procedures of Pascual- Barrera et al (2004). None of the pollutants in Table I was present in the water.…”

Section: Experimental Designmentioning

confidence: 99%

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Cichlidogyrus Sclerosus (Monogenea: Ancyrocephalinae) and Its Host, the Nile Tilapia (Oreochromis Niloticus), as Bioindicators of Chemical Pollution

Sánchez-Ramírez

Martínez

Aguirre-Macedo

et al. 2007

Journal of Parasitology

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Experimental results showed that the gill monogenean Cichlidogyrus sclerosus and its host, the Nile tilapia Oreochromis niloticus, exhibited significant numerical and physiological responses after exposure to sediments polluted with polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls, and heavy metals in comparison with control fishes. After 15 days of exposure, C. sclerosus abundance significantly increased in treatments with low to fairly high sediment pollutant concentrations, but declined at high sediment pollutant concentrations. Hypertrophy and hyperplasia in secondary gill lamellae and the spleen melanomacrophage centers were significantly higher at extremely high sediment pollutant concentrations compared with the controls. Spleen lymphocyte and monocyte counts were significantly lower at extremely high sediment pollutant concentrations and were significantly correlated with high fluorescent aromatic compound concentrations measured as PAH exposure indicators. A multivariate redundancy analysis showed significant statistical association between sediment pollutant concentration, C. sclerosus abundance, and tilapia physiological variables. The polluted sediments negatively affected monogenean abundance and induced immunosuppression in hosts, consequently increasing histological damage in hosts and allowing persistent C. sclerosus infection. This study documents evidence suggesting that C. sclerosus and its host are indeed excellent models to test environmental quality in tropical freshwater ecosystems.

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Section: Discussionmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

Cichlidogyrus Sclerosus (Monogenea: Ancyrocephalinae) and Its Host, the Nile Tilapia (Oreochromis Niloticus), as Bioindicators of Chemical Pollution

Sánchez-Ramírez

Martínez

Aguirre-Macedo

et al. 2007

Journal of Parasitology

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“…Copper contamination in soils could result from weathering of copper-rich rocks discarded on the environment in the course of gold mining as well application of agro-chemicals on the farmland in the area. Exposure to high concentration of copper can lead to health problems such as pulmonary oedema, lung carcinoma and transitory fever (Pascual et al, 2004). In terms of rock types, gabbro and basalt have the highest concentration while granodiorite and granite have the lowest copper contents.…”

Section: Classification By Wedepohl (1995) and Taylor And Mclennan (mentioning

confidence: 99%

“…In terms of rock types, gabbro and basalt have the highest concentration while granodiorite and granite have the lowest copper contents. This implies that soils derived from mafic rocks would have higher natural copper contents than those from felsic varieties (Pascual et al, 2004;Okunlola et al 2016;Alloway, 1990;Nwankwoala et al, 2017). Table 2).…”

Section: Classification By Wedepohl (1995) and Taylor And Mclennan (mentioning

confidence: 99%

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Utility of pollution indices in assessment of soil quality around Madaga gold mining site, Niger state, North-central Nigeria

Amadi¹,

Ebieme²,

Musa³

et al. 2017

Ife Journal of Science

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The quality of soil in the vicinity of Madaka mining sites were investigated in this study using Environmental Pollution Indices. Geological mapping of the study area indicated that the area was dominated by schist and granite. The static water level measurement revealed a westward groundwater flow direction which also coincides with the regional structural trend of the area. Laboratory analyses of soil and stream sediment were carried out in National Geosciences Research Laboratory Kaduna. The results of the soil analyses revealed high concentrations of mercury, cadmium, lead and arsenic. The results of the laboratory analysis were further elucidated using pollution indices such as geo-accumulation index, contamination factor, degree of contamination, elemental contamination index and metal pollution index. These environmental indices revealed that the soil is seriously polluted with mercury, cadmium and lead, moderately polluted with arsenic, lightly polluted with iron and copper and very lightly polluted with manganese, zinc, nickel and cobalt in the order of: Hg > Cd >Pb> As > Fe > Cu > Mn > Zn > Ni > Co. The mean concentrations of the first four metals (Hg, Cd, Pb and As) exceeds their average crustal abundance, which is an indication of possible pollution. The concentrations map of the analyzed heavy metals indicated a westward decrease in concentration away from the mine sites. This was in agreement with the flow direction and the possible reduction in pollution intensity away from the mine sites could be attributed to the natural attenuation mechanism of soil in the course of groundwater migration as well as hydrogeological attributes of the area. The study recommends that the miners be grouped into association and trained on modern mining techniques that are environmental friendly. The polluted soils in the area should be remediated and proper sensitization on the dangers associated with artisanal mining should be carried out in the area. Periodic monitoring of the soil quality in the area is advocated. Keywords

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Effects of oil spill related chemical pollution on helminth parasites in Mexican flounder Cyclopsetta chittendeni from the Campeche Sound, Gulf of Mexico

Centeno-Chalé

Aguirre-Macedo

Gold-Bouchot

et al. 2015

Ecotoxicology and Environmental Safety

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Heavy Metals and Hydrocarbons in Sediments from Three Lakes from San Miguel, Chiapas, Mexico

Cited by 13 publications

References 0 publications

Cichlidogyrus Sclerosus (Monogenea: Ancyrocephalinae) and Its Host, the Nile Tilapia (Oreochromis Niloticus), as Bioindicators of Chemical Pollution

Cichlidogyrus Sclerosus (Monogenea: Ancyrocephalinae) and Its Host, the Nile Tilapia (Oreochromis Niloticus), as Bioindicators of Chemical Pollution

Utility of pollution indices in assessment of soil quality around Madaga gold mining site, Niger state, North-central Nigeria

Effects of oil spill related chemical pollution on helminth parasites in Mexican flounder Cyclopsetta chittendeni from the Campeche Sound, Gulf of Mexico

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