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Acta Theriol (Warsz). 2011 Oct;56(4):343-351. doi: 10.1007/s13364-011-0039-8. Epub 2011 Apr 21.

Teeth of the red fox Vulpes vulpes (L., 1758) as a bioindicator in studies on fluoride pollution.

Acta theriologica

Elżbieta Kalisińska, Mirona Palczewska-Komsa

PMID: 21957316 PMCID: PMC3171659 DOI: 10.1007/s13364-011-0039-8

Abstract

An examination was made of fluoride content in the mandibular first molars of the permanent teeth of the red fox Vulpes vulpes living in north-west (NW) Poland. The teeth were first dried to a constant weight at 105°C and then ashed. Fluorides were determined potentiometrically, and their concentrations were expressed in dry weight (DW) and ash. The results were used to perform an indirect estimation of fluoride pollution in the examined region of Poland. The collected specimens (n = 35) were classified into one of the three age categories: immature (im, 6-12 months), subadult (subad, from 12 to 20 months) and adult (ad, >20 months). The mean concentrations (geometric mean) of fluoride were similar in the im and subad groups (230 and 296 mg/kg DW and 297 and 385 mg/kg ash, respectively), and significantly smaller than in the ad group (504 and 654 mg/kg, respectively, in DW and ash). Basing on other reports that the ∼400 mg/kg DW concentration of fluoride in bones in the long-lived wild mammals generally reflects the geochemical background, it was found that 57% of the foxes in NW Poland exceeded this value by 9% to 170%. This indirectly reflects a moderate fluoride contamination in the tested region.

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