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Trace element concentrations in liver of 16 species of cetaceans stranded on Pacific Islands from 1997 through 2013

Citation

Hansen, AMK and Bryan, CE and West, K and Jensen, BA, Trace element concentrations in liver of 16 species of cetaceans stranded on Pacific Islands from 1997 through 2013, Archives of Environmental Contamination and Toxicology, 70, (1) pp. 75-95. ISSN 0090-4341 (2016) [Refereed Article]

Copyright Statement

Copyright 2015 Springer Science+Business Media New York (outside the USA)

DOI: doi:10.1007/s00244-015-0204-1

Abstract

The impacts of anthropogenic contaminants on marine ecosystems are a concern worldwide. Anthropogenic activities can enrich trace elements in marine biota to concentrations that may negatively impact organism health. Exposure to elevated concentrations of trace elements is considered a contributing factor in marine mammal population declines. Hawai’i is an increasingly important geographic location for global monitoring, yet trace element concentrations have not been quantified in Hawaiian cetaceans, and there is little trace element data for Pacific cetaceans. This study measured trace elements (Cr, Mn, Cu, Zn, As, Se, Sr, Cd, Sn, Hg, and Pb) in liver of 16 species of cetaceans that stranded on U.S. Pacific Islands from 1997 to 2013, using high resolution inductively coupled plasma mass spectrometry (HR-ICP-MS) (n = 31), and direct mercury analysis atomic absorption spectrometry (DMA-AAS) (n = 43). Concentration ranges (μg/g wet mass fraction) for non-essential trace elements, such as Cd (0.0031–58.93) and Hg (0.0062–1571.75) were much greater than essential trace elements, such as Mn (0.590–17.31) and Zn (14.72–245.38). Differences were found among age classes in Cu, Zn, Hg, and Se concentrations. The highest concentrations of Se, Cd, Sn, Hg, and Pb were found in one adult female false killer whale (Pseudorca crassidens) at concentrations that are known to affect health in marine mammals. The results of this study establish initial trace element concentration ranges for Pacific cetaceans in the Hawaiian Islands region, provide insights into contaminant exposure of these marine mammals, and contribute to a greater understanding of anthropogenic impacts in the Pacific Ocean.

Item Details

Item Type:Refereed Article
Keywords:cetacean, trace elements, Pacific, Hawaii, environmental monitoring, stranded, liver
Research Division:Environmental Sciences
Research Group:Environmental Science and Management
Research Field:Environmental Monitoring
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Biological Sciences
Author:Hansen, AMK (Mrs Angela Hansen)
ID Code:116953
Year Published:2016
Web of Science® Times Cited:4
Deposited By:Directorate
Deposited On:2017-05-25
Last Modified:2017-08-18
Downloads:0

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