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dc.contributor.authorLettoof, Damian C.
dc.contributor.authorRankenburg, Kai
dc.contributor.authorMcDonald, Bradley
dc.contributor.authorEvans, Noreen
dc.contributor.authorBateman, Bill
dc.contributor.authorAubret, Fabien
dc.contributor.authorGagnon, Marthe Monique
dc.date.accessioned2021-05-12T02:20:08Z
dc.date.available2021-05-12T02:20:08Z
dc.date.issued2021
dc.identifier.citationLettoof, D.C. and Rankenburg, K. and McDonald, B.J. and Evans, N.J. and Bateman, P.W. and Aubret, F. and Gagnon, M.M. 2021. Snake scales record environmental metal(loid) contamination. Environmental Pollution. 274: Article No. 116547.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/83528
dc.identifier.doi10.1016/j.envpol.2021.116547
dc.description.abstract

Wetland snakes, as top predators, are becoming globally recognised as bioindicators of wetland contamination. Livers are the traditional test organ for contaminant exposure in organisms, but research is moving towards a preference for non-lethal tissue sampling. Snake scales can be used as an indicator of exposure, as many metals bind to the keratin. We used laser ablation with inductively coupled plasma-atomic emission spectroscopy and mass spectrometry (LA-ICP-MS) to quantify the concentrations of 19 metals and metalloids (collectively referred to ‘metals’ hereafter) in Western tiger snake (Notechis scutatus occidentalis) scales from four wetlands along an urban gradient, and compared them to concentrations measured in captive tiger snake scales. We conducted repeat measures to determine the concentration accuracy of each metal using LA-ICP-MS. Concentrations in wild Western tiger snake scales were significantly higher than in reference tiger snake scales for most metals analysed, suggesting accumulation from environmental exposure. We compared the scale concentrations to sediment concentrations of sampled wetlands, and found inter-site differences between mean concentrations of metals in scales parallel patterns recorded from sediment. Four metals (Mn, As, Se, Sb) had strong positive correlations with liver tissue contents suggesting scale concentrations can be used to infer internal concentrations. By screening for a larger suite of metals than we could using traditional digestive methods, we identified additional metals (Ti, V, Sr, Cs, Tl, Th, U) that may be accumulating to levels of concern in tiger snakes in Perth, Western Australia. This research has progressed the use of LA-ICP-MS for quantifying a suite of metals available in snake scales, and highlights the significance of using wetland snake scales as a non-lethal indicator of environmental contamination.

dc.languageeng
dc.subjectBioindicator
dc.subjectLA-ICP-MS
dc.subjectNon-lethal
dc.subjectPollution
dc.subjectUrbanisation
dc.subjectAnimals
dc.subjectEnvironmental Monitoring
dc.subjectMetals
dc.subjectSnakes
dc.subjectWestern Australia
dc.subjectWetlands
dc.titleSnake scales record environmental metal(loid) contamination
dc.typeJournal Article
dcterms.source.volume274
dcterms.source.startPage116547
dcterms.source.issn0269-7491
dcterms.source.titleEnvironmental Pollution
dc.date.updated2021-05-12T02:20:07Z
curtin.departmentJohn de Laeter Centre (JdLC)
curtin.departmentSchool of Earth and Planetary Sciences (EPS)
curtin.accessStatusFulltext not available
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidEvans, Noreen [0000-0002-7615-8328]
curtin.contributor.orcidRankenburg, Kai [0000-0003-3708-9304]
curtin.contributor.orcidBateman, Bill [0000-0002-3036-5479]
curtin.contributor.orcidGagnon, Marthe Monique [0000-0002-3190-5094]
curtin.contributor.orcidLettoof, Damian C. [0000-0002-6309-6914]
curtin.contributor.researcheridEvans, Noreen [C-3275-2013]
curtin.contributor.researcheridGagnon, Marthe Monique [P-6078-2014]
dcterms.source.eissn1873-6424
curtin.contributor.scopusauthoridEvans, Noreen [7401559218]
curtin.contributor.scopusauthoridRankenburg, Kai [13907083200]
curtin.contributor.scopusauthoridBateman, Bill [7006469998]
curtin.contributor.scopusauthoridGagnon, Marthe Monique [35577908600] [57202474096]
dc.date.embargoEnd2023-01-24


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