alexa Global Assessment of Silver Pollution using Sperm Whales (Physeter macrocephalus) as an Indicator Species
ISSN: 2161-0525

Journal of Environmental & Analytical Toxicology
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Research Article

Global Assessment of Silver Pollution using Sperm Whales (Physeter macrocephalus) as an Indicator Species

*Laura C Savery 1,2,3,4, Sandra S Wise 1,2,5,6, Carolyne Falank 1,2,3, James Wise 1,2,4, Christy Gianios Jr 1,2,5,6, W Douglas Thompson 2,5, Christopher Perkins 7, Michael D Mason 2,8, Roger Payne 2,6, *John Pierce Wise Sr 1,2,3,4
1Wise Laboratory Of Environmental And Genetic Toxicology, University Of Southern Maine, 96 Falmouth St., Portland, ME, 04104, United States
2Maine Center For Toxicology And Environmental Health, University Of Southern Maine, 96 Falmouth St., Portland, ME, 04104, United States
3University Of Southern Maine, 178 Science Building, Portland, ME, 04104, United States
4Ocean Alliance, University Of Southern Maine, 32 Horton Street, Gloucester, MA, 01930, United States
5Department Of Applied Medical Sciences, University Of Southern Maine, 178 Science Building, Portland, ME, 04104, United States
6Ocean Alliance, 32 Horton Street, Gloucester, MA, 01930, United States
7Center For Environmental Sciences And Engineering, University Of Connecticut, 3107 Horsebarn Hill Road, U-4210, Storrs, CT, 06269, United States
8Department Of Chemical And Biological Engineering, Institute For Molecular Biophysics, University Of Maine, Orono, ME, 04469, United States
Corresponding Authors:
Laura C Savery, , Wise Laboratory Of Environmental And Genetic Toxicology, University Of Southern Maine, 96 Falmouth St., Portland, ME, 04104, United States
John Pierce Wise Sr, , Wise Laboratory Of Environmental And Genetic Toxicology, University Of Southern Maine, 96 Falmouth St., Portland, ME, 04104, United States, Tel:+1-207- 228-8050, Fax: +1-207-228-8518, Email: [email protected]

Received Date: Dec 05, 2012 / Accepted Date: Feb 28, 2013 / Published Date: Mar 04, 2013

Citation: Savery LC, Wise SS, Falank C, Wise J, Gianios C Jr (2013) Global Assessment of Silver Pollution using Sperm Whales (Physeter macrocephalus) as an Indicator Species. J Environ Anal Toxicol 3:169.DOI: 10.4172/2161-0525.1000169

Copyright: © 2013  Laura C Savery, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Silver pollution in the marine environment is of concern, particularly, with the rapid increasing use of silver nanoparticles in consumer products providing additional sources of silver emissions. Silver is highly toxic and known to bioaccumulate in aquatic organisms; however, the risk silver poses to the marine ecosystem is poorly understood. The sperm whale (Physeter macrocephalus), a toothed whale having a wide global distribution and high trophic level, is a sentinel of ocean health. The aim of this study was to provide a global baseline for silver as a marine pollutant using the sperm whale as an indicator species. Skin biopsies were collected in free-ranging sperm whales around the globe during the voyage of the research vessel, Odyssey, during 2000 and 2005. Total silver levels were measured in 298 sperm whales from 16 regions. Detectable levels were found in 176 whales and ranged from 0.1 to 4,179.0 μg/g ww with a global mean level of 16.9 ± 14.1 μg/g ww. The highest mean level was found in whales sampled in waters near Seychelles with 123.3 μg/g ww, and the lowest mean in whales near Chagos with 0.1 μg/g ww. These data provide an important global baseline for silver pollution that precedes the recent emergence of silver nanoparticles.

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