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Ecotoxicology

, Volume 20, Issue 6, pp 1467–1475 | Cite as

Regional and interspecific variation in Sr, Ca, and Sr/Ca ratios in avian eggshells from the USA

  • Miguel A. Mora
  • Bryan Brattin
  • Catherine Baxter
  • James W. Rivers
Article

Abstract

To examine regional variation in strontium (Sr), which at high concentrations may reduce eggshell quality, increase egg breakage and reproductive failure, we analyzed Sr, and calcium (Ca) concentrations and Sr/Ca ratios in eggshells from 20 avian species from California, Texas, Idaho, Kansas, and Michigan. In addition, we included data previously reported from Arizona to expand the regional comparisons and to better establish patterns of Sr, and Sr/Ca ratios in bird species across the United States. We found Sr concentrations varied significantly among regions, among species, and among foraging guilds; this variability is strongly influenced by the Sr/Ca ratios in surface water from locations close to the region where the eggshells were collected. Sr concentrations and Sr/Ca ratios were significantly higher in bird eggshells from the Volta wildlife region in the San Joaquin Valley, California and in various locales from Arizona. Sr concentrations and Sr/Ca ratios in bird eggshells from other locations in the USA were lower than those detected in these two regions. Among foraging guilds, invertivores had the highest Sr concentrations and Sr/Ca ratios and carnivores had the lowest. In general, the Sr/Ca ratio increased strongly with increasing Sr concentrations (R2 = 0.99, P < 0.0001). There was a significant correlation (R2 = 0.58, P < 0.0001) between Sr/Ca ratios in water and the average Sr/Ca ratios in eggshells suggesting that these values could be determined from Sr/Ca ratios in water. Eggshell thickness was poorly correlated with Sr (R2 = 0.03) but had a significant and positive correlation with Ca and was more properly correlated by a quadratic equation (R2 = 0.50, Thickness = 2.13 − 0.02Ca − 3.07 * 10−5Ca2). Our study provides further evidence that Sr accumulates significantly in the avian eggshell, in some regions at concentrations which could be of concern for potential negative effects on reproduction. We suggest that when assessing the effects of metals on avian reproduction in regions with high Sr deposits in rock and soil, Sr concentrations in the eggshell also should be measured to evaluate additional effects on thickness and reproduction.

Keywords

Avian eggshell Calcium (Ca) Strontium (Sr) Sr/Ca ratios 

Notes

Acknowledgments

We greatly appreciate the kindness and contribution of various individuals, including R. Hothem, D. Best, C. Thomas, and the Peregrine Fund Inc, who provided some of eggshells for the Sr analysis. R. Taylor and M. Woodin and two anonymous reviewers provided useful comments which improved the manuscript. M. Speed and D. Jann assisted with part of the data analysis. M. Blundell, J. Hite, B. Van Korff assisted with eggshell collection at Konza Prairie.

References

  1. Alexander GV, Nusbaum RE, MacDonald NS (1954) Strontium and calcium in municipal water supplies. J Am Water Works Assoc 46:643–654Google Scholar
  2. Blum JD, Taliaferro EH, Weisse MT, Holmes RT (2000) Changes in Sr/Ca, Ba/Ca and 87Sr/86Sr ratios between trophic levels in two forest ecosystems in the northeastern U.S.A. Biogeochemistry 49:87–101CrossRefGoogle Scholar
  3. Burley RW, Vadehra DV (1989) The avian egg: chemistry and biology. Wiley, New York, pp 18–21Google Scholar
  4. Burton JH, Douglas Price T, Middleton WD (1999) Correlation of bone Ba/Ca and Sr/Ca due to biological purification of calcium. J Archaeol Sci 26:609–616CrossRefGoogle Scholar
  5. Doberenz AR, Weber CW, Reid BL (1969) Effect of high dietary strontium levels on bone and eggshell calcium and strontium. Calcif Tissue Res 4:180–184CrossRefGoogle Scholar
  6. Elaroussi MA, DeLuca HF (1994) Calcium uptake by chorioallantoic membrane: effects of vitamins D and K. Am J Physiol 267:E837–E841Google Scholar
  7. Elias RW, Hirao Y, Patterson CC (1982) The circumvention of the natural biopurification of calcium along nutrient pathways by atmospheric inputs of industrial lead. Geochim Cosmochim Acta 46:2561–2580CrossRefGoogle Scholar
  8. Hopkins WA, Durant SE, Staub BP, Rowe CL, Jackson BP (2006) Reproduction, embryonic development, and maternal transfer of contaminants in the amphibian gastrophryne carolinensis. Environ Health Perspect 114:661–666CrossRefGoogle Scholar
  9. Kottferová J, Koréneková B, Siklenka P, Jacková A, Hurná E, Sály J (2001) The effect of Cd and vitamin D3 on the solidity of eggshell. Eur Food Res Technol 212:153–155CrossRefGoogle Scholar
  10. Moon J (1994) The role of vitamin D in toxic metal absorption: a review. J Am Coll Nutr 13:559–569Google Scholar
  11. Mora MA (2003) Heavy metals and metalloids in egg contents and eggshells of passerine birds from Arizona. Environ Pollut 125:393–400CrossRefGoogle Scholar
  12. Mora MA, Taylor RJ, Brattin BL (2007) Potential ecotoxicological significance of elevated concentrations of strontium in eggshells of passerine birds. Condor 109:199–205CrossRefGoogle Scholar
  13. Mraz FR, Wright PL, Ferguson TM (1967) Effect of dietary strontium on reproductive performance of the laying hen. In: Lenihan JM, Loutit JF, Martin JH (eds) Strontium metabolism. Academic Press, New York, pp 247–253Google Scholar
  14. Neufeld EB, Boskey AL (1994) Strontium alters the complexed acidic phospholipid content of mineralizing tissues. Bone 15:425–430CrossRefGoogle Scholar
  15. Ober JA (1989) Strontium—uses, supply, and technology. Information circular 9213, U.S. Department of the Interior, Bureau of Mines, Washington, DC. Superintendent of documents no. I 28.27:9213Google Scholar
  16. Quintana C, Quettier A, Sandoz D (1980) Localization of mineral elements in normal and strontium-intoxicated quail eggshell by secondary ion mass spectroscopy and electron probe microanalysis. Calcif Tissue Int 30:151–161CrossRefGoogle Scholar
  17. Rice CP, Okeefe PW, Kubiak TJ (2003) Sources, pathways, and effects of PCBs, dioxins, and dibenzofurans. In: Hoffman DA, Rattner BA, Burton GA Jr, Cairns J Jr (eds) Handbook of ecotoxicology. Lewis Publishers, NY, pp 501–573Google Scholar
  18. SAS Institute (2003) SAS 9.1.3 for windows. SAS Institute, Inc., Cary, NCGoogle Scholar
  19. Schwarzbach SE, Albertson JD, Thomas CM (2006) Effects of predation, flooding, and contamination on reproductive success of California clapper rails (Rallus longirostris obsoletus) in San Francisco Bay. Auk 123:45–60CrossRefGoogle Scholar
  20. Sillen A, Kavanagh M (1982) Strontium and paleodietary research: a review. Yearb Phys Anthropol 25:67–90CrossRefGoogle Scholar
  21. Simkiss K (1967) Calcium in reproductive physiology. Calcium metabolism in the laying bird. Chapman and Hall Ltd., London, pp 155–197Google Scholar
  22. Skougstad MW, Horr CA (1963) Occurrence and distribution of strontium in natural water. U.S. Geological Survey water supply paper no. 1946-DGoogle Scholar
  23. Theobald PK, Barton HN (1988) Maps showing anomalous concentrations of zinc, silver, antimony, manganese, barium, and strontium in stream sediment and heavy-mineral concentrate from parts of the Ajo and Lukeville 1° × 2° quadrangles, Arizona. Miscellaneous field studies map MF-1834-E. U.S. Geological Survey, Map Distribution, Federal Center, Denver, ColoradoGoogle Scholar
  24. Vitousek PM, Kennedy MJ, Derry LA, Chadwick OA (1999) Weathering versus atmospheric sources of strontium in ecosystems on young volcanic soils. Oecologia 121:255–259CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Miguel A. Mora
    • 1
  • Bryan Brattin
    • 2
    • 4
  • Catherine Baxter
    • 1
  • James W. Rivers
    • 3
  1. 1.Department of Wildlife and Fisheries SciencesTexas A&M UniversityTXUSA
  2. 2.Trace Element Research LaboratoryTexas A&M UniversityTXUSA
  3. 3.Department of Forest Ecosystems & SocietyOregon State UniversityCorvallisUSA
  4. 4.Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical SciencesColorado State UniversityFort CollinsUSA

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