PCB Concentrations in eggs and chorioallantoic membranes of loggerhead sea turtles (Caretta caretta) from the Cape Romain National Wildlife Refuge

Cobb, George P.; Wood, Pattie D.

doi:10.1016/s0045-6535(96)00386-4

Cited by 33 publications

(27 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Eggs from nests PC06 and TY14 contained total PCB concentrations of 15,956 and 16,782 ng/g, dw, respectively ( Figure 3) and these concentrations were higher than those reported (1188 ng/g) for loggerhead sea turtles from Cape Romain National Wildlife Refuge (Cobb and Wood, 1997).…”

Section: § ¿^ N S G S S" S° è è è è ¿è>mentioning

confidence: 61%

Organochlorine, PCB, PAH, and metal concentrations in eggs of loggerhead sea turtles (Caretta caretta)from northwest Florida, USA

Alam

Brim²

2000

Journal of Environmental Science and Health, Part B

View full text Add to dashboard Cite

Composite samples of unhatched and physically unaltered loggerhead sea turtle, Caretta caretta, eggs collected from 20 nests along northwest Florida were analyzed for organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), and metals. Chemical analyses revealed that turtle eggs contained detectable amounts of metals, PAHs, and PCBs. Only one OCP, p,p'-DDD, was detected, and its presence was restricted to eggs from two nesting sites. None of the PCB concentrations exceeded the Food and Drug Administration's (FDA) action limit. Concentrations of dioxin-like PCB congeners, 105, 118, and 126, and total PCBs were also detected and are contributors to the toxic burden of loggerhead sea turtle eggs. Concentrations of PAHs, 1,2,5,6-dibenzanthracene, 1-methyl naphthalene, C1-naphthalene and naphthalene were variable at nesting sites. Comparison of mean metal burdens in eggs from different beaches suggested that no uniform geographic gradients exist. Presence of OCPs, PCBs, PAHs and metals and their additive or synergistic toxicity is a concern to loggerhead sea turtle eggs; however, additive or synergistic impacts for loggerhead sea turtles are largely undocumented.

show abstract

Section: § ¿^ N S G S S" S° è è è è ¿è>mentioning

confidence: 61%

Organochlorine, PCB, PAH, and metal concentrations in eggs of loggerhead sea turtles (Caretta caretta)from northwest Florida, USA

Alam

Brim²

2000

Journal of Environmental Science and Health, Part B

View full text Add to dashboard Cite

show abstract

“…Pastor et al (1996) compared OC concentrations in CAMs from eggs of Audouin's gull (Larus audouinii) to their corresponding embryos and yolks. Correspondingly, Cobb et al (1997) and Cobb and Wood (1997) compared individual CAMs to their corresponding residual yolk in American alligators and loggerhead sea turtles, respectively. In the present study, because of the endangered status of Morelet's crocodile, it was not possible to examine the rela-tionship between OC compounds in CAMs and other tissues (e.g., embryos and neonatal organs) from corresponding crocodiles, because sacrificing neonates to obtain internal tissues was not an option.…”

Section: Discussionmentioning

confidence: 99%

“…The CAM was originally used in ecotoxicological research to assess contaminant levels in birds (Cobb et al, 1994(Cobb et al, , 1995 and was hypothesized as a potential indi-cator of chlorinated contaminant exposure in oviparous reptiles. The practicality of use of CAMs as indicators of PCB exposure was evaluated in loggerhead sea turtles (Caretta carreta) and American alligators (Alligator mississippiensis) (Cobb et al, 1997;Cobb and Wood, 1997), respectively.…”

Section: Introductionmentioning

confidence: 99%

“…The practicality of use of CAMs as indicators of PCB exposure was evaluated in loggerhead sea turtles (Caretta carreta) and American alligators (Alligator mississippiensis) (Cobb et al, 1997;Cobb and Wood, 1997), respectively. Detectable levels of PCBs in CAMs were reported in both studies, confirming contaminant accumulation in the membrane and strengthening the case for using CAMs as indicators of exposure in embryos and maternal females.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Organochlorine Pesticides in Chorioallantoic Membranes of Morelet's Crocodile Eggs From Belize

Pepper

Rainwater

Dever

et al. 2004

Journal of Wildlife Diseases

View full text Add to dashboard Cite

Recent studies examined the utility of the chorioallantoic membrane (CAM) as a nonlethal, noninvasive indicator of environmental contaminant exposure in oviparous wildlife. The CAM is a highly vascularized extraembryonic membrane that functions as a site for respiration, nutrient transport, and waste storage during embryonic development. After hatching, the CAM is usually discarded with the eggshell and can be used for chemical residue analysis. Chorioallantoic membranes have been used successfully to examine contaminant exposure and predict chemical concentrations in multiple species of birds and reptiles. In this study, we examined organochlorine (OC) pesticide concentrations in CAMs from eggs of Morelet's crocodiles (Crocodylus moreletii) from northern Belize. Multiple OCs were detected in crocodile CAMs, including aldrin, dieldrin, endrin, dichlorodiphenyltrichloroethane, dichlorodiphenyldichloroethane, dichlorodiphenyldichloroethylene (DDE), heptachlor, lindane, and methoxychlor. Number and concentrations of OC compounds in CAMs were variable. The most prevalent contaminant detected was DDE, which occurred in 69% of CAMs, with concentrations ranging from 0.3 parts per billion (ppb) to 17.0 ppb. The OC burdens in crocodile CAMs confirm contamination of eggs and suggest exposure in embryos and maternal females. These results further support the use of CAMs as qualitative indicators of OC exposure in oviparous wildlife. The efficacy of this sampling technique in the field will depend on the logistics and cost associated with CAM collection and the specific life history traits of the wildlife species.

show abstract

“…The Marsh Island, South Carolina eggs also had significantly greater mass fractions of the octa-PCBs than the Gulf of California eggs. While studies on PCBs in loggerhead turtles (Caretta caretta) have occurred both in the Gulf of California and Cape Romain NWR South Carolina, the tissues examined differed with liver in the former and eggs and chorioallantoie membranes (CAM) in the latter and a decade elapsed between studies (Cobb and Wood, 1997;Richardson et al, 2010). However, as no other studies were as similar for the regions, the proportions of the PCBs to the total contribution were compared based on the means reported.…”

Section: East Versus West Comparisonsmentioning

confidence: 99%

East versus West: Organic contaminant differences in brown pelican (Pelecanus occidentalis) eggs from South Carolina, USA and the Gulf of California, Mexico

Pol

Anderson

Jodice

et al. 2012

Science of The Total Environment

View full text Add to dashboard Cite

PCB Concentrations in eggs and chorioallantoic membranes of loggerhead sea turtles (Caretta caretta) from the Cape Romain National Wildlife Refuge

Cited by 33 publications

References 21 publications

Organochlorine, PCB, PAH, and metal concentrations in eggs of loggerhead sea turtles (Caretta caretta)from northwest Florida, USA

Organochlorine, PCB, PAH, and metal concentrations in eggs of loggerhead sea turtles (Caretta caretta)from northwest Florida, USA

Organochlorine Pesticides in Chorioallantoic Membranes of Morelet's Crocodile Eggs From Belize

East versus West: Organic contaminant differences in brown pelican (Pelecanus occidentalis) eggs from South Carolina, USA and the Gulf of California, Mexico

Contact Info

Product

Resources

About