Achieving environmentally relevant organochlorine pesticide concentrations in eggs through maternal exposure in Alligator mississippiensis

Rauschenberger, R. Heath; Wiebe, Jon J.; Buckland, J.; Smith, J.T.; Sepúlveda, Marı́a S.; Gross, Timothy S.

doi:10.1016/j.marenvres.2004.03.104

Cited by 35 publications

(17 citation statements)

References 7 publications

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“…In oviparous organisms, early stages of life often exhibit a greater sensitivity to contaminants (Russell et al, 1999). But concentrations of OCs in eggs of this study remain very low and below concentrations that have been described for deleterious effects: decreased viability in clutches of alligators for egg treated with OCPs (11 075 ng g À1 yolk for DDE, Rauschenberger et al, 2004); altered reproduction in sea birds with adverse effects established for 2300 ng g À1 wet mass for RPCBs in egg (Fisk et al, 2005); and increased developmental abnormalities in embryos and hatchlings in aquatic turtles eggs from contaminated lakes (3575 ng g À1 and 389 ng g À1 wet mass for RPCBs and DDE respectively from Lake Ontario, Bishop et al, 1998). Further investigations would be however needed to assess toxic thresholds at which adverse effects occur in marine turtle eggs.…”

Section: Discussionmentioning

confidence: 60%

Maternal transfer of chlorinated contaminants in the leatherback turtles, Dermochelys coriacea, nesting in French Guiana

et al. 2010

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a b s t r a c tWe examined the maternal transfer of organochlorine contaminants (OCs), pesticides (DDTS and HCHs) and polychlorinated biphenyls (PCBs), and the temporal variation of blood and eggs concentrations from 38 leatherback turtles (Dermochelys coriacea) nesting in French Guiana. PCBs were found to be the dominant OCs with respective mean concentrations of 55.14 ng g À1 lipid-mass for egg and 1.26 ng mL À1 wetmass for blood. OC concentrations were lower than concentrations measured in other marine turtles which might be due to the lower trophic position (diet based on gelatinous zooplankton) and to the location of their foraging and nesting grounds. All OCs detected in leatherback blood were detected in eggs, suggesting a maternal transfer of OCs. This transfer was shown to depend on female blood concentration for RDDTs and for the most prevalent PCB congeners, since significant relationships were found between paired blood-egg concentrations. During the nesting season, OC concentrations in eggs and the percentage of lipid in eggs were found to decline in successive clutches, highlighting a process of offloading from females to their eggs and a decreasing investment of lipid from females into their clutches. OCs in eggs tended to be higher in females spending 3 years in the foraging grounds between two nesting seasons than in those spending 2 years, suggesting an impact of time spacing two breeding seasons, called remigration interval, and of location of the foraging grounds.

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Section: Discussionmentioning

confidence: 60%

Maternal transfer of chlorinated contaminants in the leatherback turtles, Dermochelys coriacea, nesting in French Guiana

et al. 2010

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“…The only study that has been conducted analyzed the effects of organochlorine pesticide mixtures in alligators (Alligator mississippiensis) and their eggs [57]. The only study that has been conducted analyzed the effects of organochlorine pesticide mixtures in alligators (Alligator mississippiensis) and their eggs [57].…”

Section: Reptilian Toxicologymentioning

confidence: 99%

Wildlife Toxicity Assessment for Chlordane

Reinke¹,

Deck²

2015

Wildlife Toxicity Assessments for Chemicals of Military Concern

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“…In some cases, exposures of captive adults to contaminants and subsequent assessment of their offspring have been used to provide a more controlled but natural maternal transfer. Typically, these types of studies use species with short reproductive cycles or are conducted where there is access to captive populations or colonies of the organisms [17][18][19][20]. However, individual variations in physiological traits among adults can bring about considerable variability in transfer of contaminants to offspring, making establishment of exposureresponse relationships tenuous.…”

Section: Introductionmentioning

confidence: 99%

Experimental exposure of eggs to polybrominated diphenyl ethers BDE‐47 and BDE‐99 in red‐eared sliders (Trachemys scripta elegans) and snapping turtles (Chelydra serpentina) and possible species‐specific differences in debromination

Eisenreich¹,

Rowe²

2012

Enviro Toxic and Chemistry

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Abstract-Polybrominated diphenyl ethers (PBDEs) are a bioaccumulative, persistent, and toxic class of flame retardants that can potentially impact turtles in natural habitats via exposure through maternal transfer. To simulate maternal transfer in the present study, PBDE congeners BDE-47 and BDE-99 were topically applied to the eggshell and were allowed to diffuse into the egg contents of the redeared slider (Trachemys scripta elegans) and snapping turtle (Chelydra serpentina). Eggs were topically dosed over 8 d to achieve a target concentration of 40 ng/g in the egg contents. Transfer efficiency was higher for BDE-47 than for BDE-99 in the red-eared sliders (25.8 AE 1.9% vs 9.9 AE 1.1%) and snapping turtles (31.3 AE 1.6% vs 12.5 AE 1.4%), resulting in greater BDE-47 and lower BDE-99 egg content concentrations relative to the 40 ng/g target. However, only 25.8 and 31.3% of the total BDE-47 and 9.9 and 12.5% of the total BDE-99 dose applied could be accounted for in the red-eared slider and snapping turtle egg contents, respectively. Additionally, increased BDE-47 in red-eared slider egg contents dosed with only BDE-99 indicate that BDE-99 might have been debrominated to BDE-47. The efficacy of topical dosing for administering desired embryonic exposures is clearly affected by the chemical properties of the applied compounds and was more successful for BDE-47 in both species. Environ. Toxicol. Chem.

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Achieving environmentally relevant organochlorine pesticide concentrations in eggs through maternal exposure in Alligator mississippiensis

Cited by 35 publications

References 7 publications

Maternal transfer of chlorinated contaminants in the leatherback turtles, Dermochelys coriacea, nesting in French Guiana

Maternal transfer of chlorinated contaminants in the leatherback turtles, Dermochelys coriacea, nesting in French Guiana

Wildlife Toxicity Assessment for Chlordane

Experimental exposure of eggs to polybrominated diphenyl ethers BDE‐47 and BDE‐99 in red‐eared sliders (Trachemys scripta elegans) and snapping turtles (Chelydra serpentina) and possible species‐specific differences in debromination

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