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dc.contributor.authorFinlayson, KA
dc.contributor.authorLeusch, FDL
dc.contributor.authorVilla, CA
dc.contributor.authorLimpus, CJ
dc.contributor.authorvan de Merwe, JP
dc.date.accessioned2021-02-08T22:47:27Z
dc.date.available2021-02-08T22:47:27Z
dc.date.issued2021
dc.identifier.issn0045-6535
dc.identifier.doi10.1016/j.chemosphere.2021.129752
dc.identifier.urihttp://hdl.handle.net/10072/401855
dc.description.abstractSea turtle populations foraging in coastal areas adjacent to human activity can be exposed to numerous chemical contaminants for long periods of time. For trace elements, well-developed, sensitive and inexpensive analytical techniques remain the most effective method for assessing exposure in sea turtles. However, there are many thousands more organic contaminants present in sea turtles, often at low levels as complex mixtures. Recently developed species-specific in vitro bioassays provide an effective means to identify the presence, and effect of, organic chemicals in sea turtles. This study used a combination of chemical analysis and effects-based bioassays to provide complementary information on chemical exposure and effects for three green turtle foraging populations (Chelonia mydas) in southern Queensland, Australia. Blood was collected from foraging sub-adult green turtles captured in Moreton Bay, Hervey Bay, and Port Curtis. Twenty-six trace elements were measured in whole blood using ICP-MS. Organic contaminants in turtle blood were extracted via QuEChERS and applied to primary green turtle skin fibroblast cell in vitro assays for two toxicity endpoints; cytotoxicity and oxidative stress. The trace element analysis and bioassay results indicated site-specific differences between foraging populations. In particular, turtles from Moreton Bay, a heavily populated coastal embayment, had pronounced cytotoxicity and oxidative stress from organic blood extracts, and elevated concentrations of Cs, Ag, and Zn relative to the other sites. Incorporating traditional chemical analysis with novel effects-based methods can provide a comprehensive assessment of chemical risk in sea turtle populations, contributing to the conservation and management of these threatened species.
dc.description.peerreviewedYes
dc.languageen
dc.publisherElsevier BV
dc.relation.ispartofpagefrom129752
dc.relation.ispartofjournalChemosphere
dc.relation.ispartofvolume274
dc.subject.fieldofresearchBiological oceanography
dc.subject.fieldofresearchMarine and estuarine ecology (incl. marine ichthyology)
dc.subject.fieldofresearchcode370801
dc.subject.fieldofresearchcode310305
dc.titleCombining analytical and in vitro techniques for comprehensive assessments of chemical exposure and effect in green sea turtles (Chelonia mydas)
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationFinlayson, KA; Leusch, FDL; Villa, CA; Limpus, CJ; van de Merwe, JP, Combining analytical and in vitro techniques for comprehensive assessments of chemical exposure and effect in green sea turtles (Chelonia mydas), Chemosphere, 2021, 274, pp. 129752
dc.date.updated2021-02-08T22:02:59Z
gro.hasfulltextNo Full Text
gro.griffith.authorLeusch, Frederic
gro.griffith.authorvan de Merwe, Jason P.
gro.griffith.authorFinlayson, Kimberly A.


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