PMID- 15924994 OWN - NLM STAT- MEDLINE DCOM- 20050823 LR - 20161124 IS - 0141-1136 (Print) IS - 0141-1136 (Linking) VI - 60 IP - 4 DP - 2005 Oct TI - Evaluation of the relationships between biochemical endpoints of PAH exposure and physiological endpoints of reproduction in male California Halibut (Paralichthys californicus) exposed to sediments from a natural oil seep. PG - 454-65 AB - Coal Oil Point (COP) is a natural oil seep off the coast of Santa Barbara, California. Although most studies examining the fate and effects of petroleum have focused upon urbanized or anthropogenic sources of inputs, few have examined the effects of polyaromatic hydrocarbons (PAHs) derived from natural seeps. In order to evaluate the effects of PAHs derived from COP on marine fish populations, hatchery-reared California Halibut (Platichthys californicus) were exposed for 30 days to seven dilutions of sediments collected from COP. Hepatic cytochrome P450 1A (CYP1A), biliary fluorescent aromatic compounds (FACs), gonadal somatic indices, and plasma steroid concentrations. Sixteen USEPA priority PAHs were targeted for analysis in each sediment dilution. In general, biochemical responses were somewhat recalcitrant to dose-response relationships and were less sensitive than the literature values established for the same indicators following exposure to urbanized PAHs. Trends toward reductions in plasma 17beta-estradiol concentrations were observed, but reductions in gonadal somatic indices were not observed. FAC values for naphthalene, benzo(a)pyrene, phenanthrene-related compounds reached maximums at 33-100% COP sediment. The resulting insensitivity may be unique for exposure to "natural" petroleum due to a higher concentration of lower molecular weight PAHs or uncharacterized inhibitors. FAU - Seruto, Cherlynn AU - Seruto C AD - Department of Environmental Sciences, Environmental Toxicology Program, University of California, Riverside 92521, USA. FAU - Sapozhnikova, Yelena AU - Sapozhnikova Y FAU - Schlenk, Daniel AU - Schlenk D LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20050402 PL - England TA - Mar Environ Res JT - Marine environmental research JID - 9882895 RN - 0 (Petroleum) RN - 0 (Polycyclic Aromatic Hydrocarbons) RN - 0 (Water Pollutants, Chemical) RN - 4TI98Z838E (Estradiol) SB - IM MH - Adaptation, Physiological MH - Animals MH - *Environmental Exposure MH - Estradiol/blood MH - Flounder/*physiology MH - Geological Phenomena MH - Geology MH - Male MH - Petroleum MH - Polycyclic Aromatic Hydrocarbons/*poisoning MH - Testis/cytology MH - Water Pollutants, Chemical/*poisoning EDAT- 2005/06/01 09:00 MHDA- 2005/08/24 09:00 CRDT- 2005/06/01 09:00 PHST- 2004/10/26 00:00 [received] PHST- 2005/01/06 00:00 [revised] PHST- 2005/01/25 00:00 [accepted] PHST- 2005/06/01 09:00 [pubmed] PHST- 2005/08/24 09:00 [medline] PHST- 2005/06/01 09:00 [entrez] AID - S0141-1136(05)00012-7 [pii] AID - 10.1016/j.marenvres.2005.01.004 [doi] PST - ppublish SO - Mar Environ Res. 2005 Oct;60(4):454-65. doi: 10.1016/j.marenvres.2005.01.004. Epub 2005 Apr 2.