The current situation of inorganic elements in marine turtles: A general review and meta-analysis

Cortés-Gómez, Adriana A.; Romero, Diego; Girondot, Marc

doi:10.1016/j.envpol.2017.06.077

Cited by 65 publications

(22 citation statements)

References 113 publications

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“…All other elements were present in both tissues. Most of the values in this group were similar to others published for different species (Cortés-Gómez et al, 2017). The median elemental values in the blood and scute were ranked as: Al > As > Pb > Cd > Hg > Be.…”

Section: Resultssupporting

confidence: 87%

“…Essential minerals are required for physiological processes in the body and are commonly found in high concentrations in different tissues (Cortés-Gómez et al, 2017;Jakimska et al, 2011a,b). To date, there have been no known studies in nesting hawksbill turtles that have used scute as a biomonitoring tissue, and to our knowledge, ours is the first study to analyze inorganic mineral concentrations of scute in hawksbill turtles.…”

Section: Resultsmentioning

confidence: 99%

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Incidence of 49 elements in the blood and scute tissues of nesting hawksbill turtles (Eretmochelys imbricata) in Holbox Island

Mondragón

Luzardo

Zumbado

et al. 2021

Regional Studies in Marine Science

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Due to progressive urban development along the Mexican Caribbean coastline, it is crucial to gauge the impact of anthropogenic contamination of marine ecosystems through biomonitoring procedures.In the current study, we quantified the concentration of 49 inorganic elements in the blood and scute tissues of clinically healthy nesting hawksbill sea turtles (Eretmochelys imbricata). The elements were classified into four groups: Group A: essential mineral elements with toxic potential; Group B: non-essential elements with high toxicity; Group C: toxic non-essential minority elements and Trace Elements (TE); and Group D: rare-earth elements (REE) and other TE. Almost all the samples in both tissues showed perceptible levels of all the quantified elements. The only element identified with a correlation between blood and scute was arsenic (As), which could indicate a fast excretion through this type of keratinized tissue. The bio-accumulation of inorganic elements is a complex process, requiring the simultaneous examination of different tissues to evaluate the exposure. Our study reinforces the usefulness of scute tissue as a non-invasive sampling technique for the evaluation of persistent pollutants in marine turtles.

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Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Incidence of 49 elements in the blood and scute tissues of nesting hawksbill turtles (Eretmochelys imbricata) in Holbox Island

Mondragón

Luzardo

Zumbado

et al. 2021

Regional Studies in Marine Science

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“…In addition, sea turtles show strong fidelity to their foraging areas (Broderick et al 2007), potentially resulting in long-term exposures to contaminants in these habitats. Accumulation of organic and inorganic contaminants has been reported in sea turtles from all over the world (See reviews by Pugh & Becker 2001, Keller 2003, D'Ilio et al 2011, Cortés-Gómez et al 2017. There is a growing body of evidence that suggests these contaminants can have negative effects in sea turtles (e.g.…”

Section: Introductionmentioning

confidence: 99%

Cytotoxicity of organic and inorganic compounds to primary cell cultures established from internal tissues of Chelonia mydas

Finlayson

Leusch

Merwe

2019

Science of The Total Environment

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Chemical contaminants have been found in the tissues of sea turtles from all over the world; however, very little is known about the effects. Recently, in vitro alternatives to live animal testing have been applied to sea turtles due to their ethical and practical benefits. While primary skin fibroblasts have been established for several species of sea turtle, cells from internal organs are lacking, though they may be more relevant due to the well documented accumulation of contaminants within internal tissues. This study established primary cell cultures from the small intestine, heart, liver, ovary and skin of green turtles (Chelonia mydas). Cells were exposed to ten contaminants typically found in sea turtles to examine potential variations in sensitivity among cells established from different organs. Differences between cells established from different animals were also examined, including a comparison of cells established from a turtle with fibropapillomatosis (FP) and healthy turtles. Loggerhead (Caretta caretta) primary skin cells were also included for species comparisons.Significant differences were found between the organ types, with liver and heart being the least sensitive, and skin being the most sensitive. Overall, variation between the organ types was low. Primary skin fibroblasts may be a suitable and representative cell type for in vitro turtle toxicology research, as it is relatively easy to obtain from healthy live animals. Skin cultures provide a more sensitive indication of effect, and could be used as an early warning of the potential effects of chemical contamination. Some species differences were found but no differences were found between cell cultures from an FP turtle and healthy turtles. When EC50 values were compared to accumulation values from the literature, inorganic contaminants, such as Zn, Cd, Cr, Hg, and Cu were identified as posing a potential risk to sea turtle populations around the world.

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“…Contaminant monitoring in sea turtles can help elucidate the risk of trace elements to the species as well as to the ecosystems in which they inhabit (Cortes-Gomez et al 2017). Blood samples can be used to estimate elemental contamination in liver, muscle, and kidney tissue of green turtles (Van de Merwe et al 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Some elements, including K, Na, Mg, Ca, Mn, Fe, Co, Ni, Cu, Zn, Mo, and Se, are essential for enzymatic activity, cell structure, immune response, and other bodily functions. Essential elements can become toxic at high concentrations, whereas nonessential elements (e.g., As, Hg, and Pb) can be toxic at very low concentrations (Gadd 1992; Liu et al 2008; Cortes‐Gomez et al 2017). These nonessential elements can gain access to cells by mimicking essential elements, potentially disrupting cellular processes (Liu et al 2008; Perrault et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Trace Element Concentrations in Blood and Scute Tissues from Wild and Captive Hawaiian Green Sea Turtles (Chelonia mydas)

Shaw

Lynch

Balazs³

et al. 2020

Enviro Toxic and Chemistry

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Sea turtles are exposed to trace elements through water, sediment, and food. Exposure to these elements has been shown to decrease immune function, impair growth, and decrease reproductive output in wildlife. The present study compares trace element concentrations in green turtles in captivity at Sea Life Park Hawaii (n = 6) to wild green turtles in Kapoho Bay, Hawaii, USA (n = 5-7). Blood and scute samples were collected and analyzed for 11 elements via inductively coupled plasma-mass spectrometry (ICP-MS). Selenium was significantly greater (p < 0.05) in the blood of captive turtles compared with wild turtles, whereas V, Ni, and Pb were significantly greater in the blood of wild turtles. In scute, V, Cu, Se, and Cr were significantly greater in captive turtles, whereas As was significantly greater in wild turtles. Pelleted food fed to the captive turtles and representative samples of the wild turtle diet were analyzed via ICP-MS to calculate trophic transfer factors and daily intake values. Wild turtles had greater estimated daily intake than captive turtles for all elements except Cu and Se. Because captive turtles are fed a diet very different from that of their wild counterparts, captive turtles do not represent control or reference samples for chemical exposure studies in wild turtles. No toxic thresholds are known for sea turtles, but rehabilitation and managed care facilities should monitor sea turtle elemental concentrations to ensure the animals' health.

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The current situation of inorganic elements in marine turtles: A general review and meta-analysis

Cited by 65 publications

References 113 publications

Incidence of 49 elements in the blood and scute tissues of nesting hawksbill turtles (Eretmochelys imbricata) in Holbox Island

Incidence of 49 elements in the blood and scute tissues of nesting hawksbill turtles (Eretmochelys imbricata) in Holbox Island

Cytotoxicity of organic and inorganic compounds to primary cell cultures established from internal tissues of Chelonia mydas

Trace Element Concentrations in Blood and Scute Tissues from Wild and Captive Hawaiian Green Sea Turtles (Chelonia mydas)

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