PMID- 18272207 OWN - NLM STAT- MEDLINE DCOM- 20080710 LR - 20080303 IS - 0048-9697 (Print) IS - 0048-9697 (Linking) VI - 393 IP - 2-3 DP - 2008 Apr 15 TI - Geographic specificity of Aroclor 1268 in bottlenose dolphins (Tursiops truncatus) frequenting the Turtle/Brunswick River Estuary, Georgia (USA). PG - 367-75 LID - 10.1016/j.scitotenv.2007.12.031 [doi] AB - Coastal marine resources are at risk from anthropogenic contaminants, including legacy persistent organic pollutants (POPs) with half-lives of decades or more. To determine if polychlorinated biphenyl (PCB) signatures can be used to distinguish among local populations of inshore bottlenose dolphins (Tursiops truncatus) along the southeastern U.S. coast, blubber from free-ranging and stranded animals were collected along the Georgia coast in 2004 and analyzed for PCB congeners using gas chromatography with electron capture and negative chemical ionization mass spectrometric detection (GC-ECD and GC-NCI-MS). Mean total PCB concentrations (77+/-34 microg/g lipid) were more than 10 fold higher and congener distributions were highly enriched in Cl(7)-Cl(10) homologs in free-ranging animals from the Turtle/Brunswick River estuary (TBRE) compared with strandings samples from Savannah area estuaries 90 km to the north. Using principal components analysis (PCA), the Aroclor 1268 signature associated with TBRE animals was distinct from that observed in Savannah area animals, and also from those in animals biopsied in other southeastern U.S estuaries. Moreover, PCB signatures in dolphin blubber closely resembled those in local preferred prey fish species, strengthening the hypothesis that inshore T. truncatus populations exhibit long-term fidelity to specific estuaries and making them excellent sentinels for assessing the impact of stressors on coastal ecosystem health. FAU - Pulster, Erin L AU - Pulster EL AD - Marine Sciences Department, Savannah State University, Savannah, GA 31404, USA. epulster@mote.org FAU - Maruya, Keith A AU - Maruya KA LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20080212 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Aroclor 1268) RN - 0 (Aroclors) RN - 0 (Water Pollutants, Chemical) SB - IM MH - Adipose Tissue/metabolism MH - Animals MH - Aroclors/*metabolism MH - Bottle-Nosed Dolphin/*metabolism MH - Environmental Monitoring MH - Female MH - Geography MH - Georgia MH - Male MH - Rivers MH - Water Pollutants, Chemical/*metabolism EDAT- 2008/02/15 09:00 MHDA- 2008/07/11 09:00 CRDT- 2008/02/15 09:00 PHST- 2007/11/01 00:00 [received] PHST- 2007/12/14 00:00 [revised] PHST- 2007/12/17 00:00 [accepted] PHST- 2008/02/15 09:00 [pubmed] PHST- 2008/07/11 09:00 [medline] PHST- 2008/02/15 09:00 [entrez] AID - S0048-9697(07)01343-5 [pii] AID - 10.1016/j.scitotenv.2007.12.031 [doi] PST - ppublish SO - Sci Total Environ. 2008 Apr 15;393(2-3):367-75. doi: 10.1016/j.scitotenv.2007.12.031. Epub 2008 Feb 12.