NDLI: Comparison of two wild rodent species as sentinels of environmental contamination by mine tailings.

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Comparison of two wild rodent species as sentinels of environmental contamination by mine tailings.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Tovar-Sánchez, E. Valverde, M. Mussali-Galante, P. Ortiz-Hernández, M. L. Martínez, C. Rojas, E. Cervantes, L. T.
Spatial Coverage	Mexico
Description	Country affiliation: Mexico Author Affiliation: Tovar-Sánchez E ( Departamento de Sistemática y Evolución, Centro de Investigación en Biodiversidad y Conservación, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico.)
Abstract	BACKGROUND: Contamination with heavy metals is among the most hazardous environmental concerns caused by mining activity. A valuable tool for monitoring these effects is the use of sentinel organisms. Particularly, small mammals living inside mine tailings are an excellent study system because their analysis represents a realistic approach of mixtures and concentrations of metal exposure. PURPOSE: We analyzed metal tissue concentrations and DNA damage levels for comparison between genders of a sentinel (Peromyscus melanophrys) and a nonsentinel (Baiomys musculus) species. Also, the relationship between DNA damage and the distance from the contamination source was evaluated. METHODS: This study was conducted in an abandoned mine tailing at Morelos, Mexico. Thirty-six individuals from both species at the exposed and reference sites were sampled. Metal concentrations in bone and liver of both species were analyzed by atomic absorption spectrophotometry, and DNA damage levels were assayed using the alkaline comet assay. RESULTS: In general, concentrations of zinc, nickel, iron, and manganese were statistically higher in exposed individuals. A significant effect of the organ and the site on all metal tissue concentrations was detected. Significant DNA damage levels were registered in the exposed group, being higher in B. musculus. Females registered higher DNA damage levels than males. A negative relationship between distance from the mine tailing and DNA damage in B. musculus was observed. CONCLUSIONS: We consider that B. musculus is a suitable species to assess environmental quality, especially for bioaccumulable pollutants--such as metals--and recommend that it may be considered as a sentinel species.
ISSN	09441344
Issue Number	5
Volume Number	19
e-ISSN	16147499
Journal	Environmental Science and Pollution Research
Language	English
Publisher	Springer
Publisher Date	2012-06-01
Publisher Place	Germany
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Environmental Monitoring Methods Metals, Heavy Analysis Mining Rodentia Physiology Animals Bone And Bones Chemistry Cell Survival Dna Damage Environmental Exposure Female Liver Male Mexico Peromyscus Comparative Study Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine

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Comparison of two wild rodent species as sentinels of environmental contamination by mine tailings

Evidence of population genetic effects in Peromyscus melanophrys chronically exposed to mine tailings in Morelos, Mexico.

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Evidence of population genetic effects in Peromyscus melanophrys chronically exposed to mine tailings in Morelos, Mexico

Monitoring of contaminated toxic and heavy metals, from mine tailings through age accumulation, in soil and some wild plants at Southeast Egypt.

Environmental contamination characteristics of heavy metals from abandoned lead–zinc mine tailings in China

Heavy metals concentration in plants growing on mine tailings in Central Mexico.

Contamination Potential of an Urban Mine Tailings Deposit in Central Mexico—A Preliminary Estimation

Phytobarriers: Plants capture particles containing potentially toxic elements originating from mine tailings in semiarid regions.

Comparison of two wild rodent species as sentinels of environmental contamination by mine tailings.

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Comparison of two wild rodent species as sentinels of environmental contamination by mine tailings

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Comparison of two wild rodent species as sentinels of environmental contamination by mine tailings.