Using blood samples to estimate persistent organic pollutants and metals in green sea turtles (Chelonia mydas)

Merwe, Jason P. van de; Hodge, Mary; Olszowy, Henry; Whittier, Joan M.; Lee, Joe

doi:10.1016/j.marpolbul.2009.11.006

Cited by 104 publications

(71 citation statements)

References 35 publications

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“…The mean ΣPOP concentrations in maternal blood (1287 ± 67 pg g -1 wet mass) and eggs (1383 ± 190 pg g -1 wet mass) in the present study were similar to levels observed in concurrent studies on Chelonia mydas eggs from Peninsular Malaysia (1097 ± 433 pg g -1 wet mass; van de Merwe et al 2009b) and blood from rehabilitating Chelonia mydas subadults from Australia (929 ± 170 pg g -1 wet mass; van de Merwe et al 2009c). In relation to other sea turtle species, lipid-normalised maternal and hatchling blood concentrations of mirex in the present study (6 to 23 and 2 to 18 ng g -1 lipid, respectively) were similar to concentrations in the blood of free-ranging juvenile loggerhead turtles Caretta caretta from North Carolina, USA (<LOD to 20.5 ng g -1 lipid; Keller et al 2004b).…”

Section: Pops In Green Turtles Of Peninsular Malaysiasupporting

confidence: 86%

Persistent organic pollutants in the green sea turtle Chelonia mydas: nesting population variation, maternal transfer, and effects on development

Merwe¹,

Hodge²,

Whittier³

et al. 2010

Mar. Ecol. Prog. Ser.

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Persistent organic pollutants (POPs), such as polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) and polybrominated diphenyl ethers (PBDEs), have a wide range of toxic effects on humans and wildlife, and have been reported in a number of endangered sea turtle populations. The present study screened for POPs in a green sea turtle Chelonia mydas population in Peninsular Malaysia and investigated the maternal transfer and effects of POPs on embryonic development. At the Ma'Daerah Turtle Sanctuary, blood, eggs and hatchling blood were collected from 11 nesting female C. mydas. Samples were analysed for 83 PCBs, 23 OCPs and 19 PBDEs using gas chromatography with tandem mass spectrometry. The chemical profiles of eggs from individual turtles were significantly different, indicating variable contaminant uptake during foraging. There was evidence of maternal transfer of POPs to eggs and hatchlings, with significant correlations in sum of PCBs (ΣPCB), sum of PBDEs (ΣPBDE), γ-hexachlorocyclohexane (γ-HCH), trans-chlordane and mirex concentrations between maternal blood and eggs (p < 0.05, R 2 < 0.71), between eggs and hatchling blood (p < 0.05, R 2 < 0.83), and between maternal and hatchling blood (p < 0.05, R 2 < 0.61). In addition, there was congener-specific transfer of PCBs with less lipophilic congeners (e.g. PCB 99) more readily transferred to hatchlings than the more lipophilic congeners (e.g. PCBs 180 + 193). There was also a significant correlation between increasing egg POP concentration and decreasing hatchling mass:length ratio. POPs may therefore have subtle effects on the development of C. mydas eggs, which may compromise offshore dispersal and predator avoidance. KEY WORDS: Chelonia mydas · Persistent organic pollutants · Maternal transfer · Contamination profilesResale or republication not permitted without written consent of the publisher

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Section: Pops In Green Turtles Of Peninsular Malaysiasupporting

confidence: 86%

Persistent organic pollutants in the green sea turtle Chelonia mydas: nesting population variation, maternal transfer, and effects on development

Merwe¹,

Hodge²,

Whittier³

et al. 2010

Mar. Ecol. Prog. Ser.

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“…The correlation between T-Hg concentrations in scute and other organs, especially muscle, shows that carapace fragments could be used as a good monitoring matrix for Hg body burdens in Chelonia mydas. Similarly, previous studies have shown that T-Hg concentrations quantified in scute of green turtles correlated significantly with Hg content presented in muscle, blood and others internal tissues (Bezerra et al, 2013;Komoroske et al, 2011;Van de Merwe, 2008).…”

Section: Discussionsupporting

confidence: 76%

Food preferences and Hg distribution in Chelonia mydas assessed by stable isotopes

Bezerra

Lacerda

Rezende

et al. 2015

Environmental Pollution

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“…blood sampling is an excellent, relatively noninvasive method to establish reliable baseline values of element levels in healthy sea turtles [7,11,14]. Van de Merwe et al [21] used blood samples to estimate the liver, kidney and muscle accumulation of elements in green sea turtles at found strong correlations between blood and tissue concentrations of As, cd, co, Hg and Se. Element levels found in blood samples can be used to study the processes of absorption, accumulation and circulation of metals and metalloids in blood and to correlate them to their bioavailability and potential toxicity [11].…”

mentioning

confidence: 99%

Relationships between Carapace Sizes and Plasma Major and Trace Element Status in Captive Hawksbill Sea Turtles (<i>Eretmochelys imbricata</i>)

Suzuki

Noda

Yanagisawa

et al. 2012

The Journal of Veterinary Medical Science

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AbSTRAcT. The aim of this study was to evaluate the relationships between carapace parameters as indicators of age and plasma elements in 25 captive hawksbill sea turtles. Particle-induced X-ray emission allowed detection of 23 trace and major elements. There were significant but weak correlations between the virtual carapace surface area and plasma bromide (r= −0.552, P<0.01), phosphorus (r=0.547, P<0.01), lead (r=−0.434, P<0.05) and strontium (r=0.599, P<0.01), while there were no significant correlations with other elements. These results suggest that major and trace plasma elements in captive sea turtles show almost no variation with carapace parameters, suggesting that the increase in plasma elements seen in wild sea turtles might be the result of marine pollution. KEY WORDS: carapace size, hawksbill sea turtle, major elements, marine ecosystem, trace elements.

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Using blood samples to estimate persistent organic pollutants and metals in green sea turtles (Chelonia mydas)

Cited by 104 publications

References 35 publications

Persistent organic pollutants in the green sea turtle Chelonia mydas: nesting population variation, maternal transfer, and effects on development

Persistent organic pollutants in the green sea turtle Chelonia mydas: nesting population variation, maternal transfer, and effects on development

Food preferences and Hg distribution in Chelonia mydas assessed by stable isotopes

Relationships between Carapace Sizes and Plasma Major and Trace Element Status in Captive Hawksbill Sea Turtles (<i>Eretmochelys imbricata</i>)

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