NDLI: Contaminant Concentrations and Histopathological Effects in Sacramento Splittail (Pogonichthys macrolepidotus)

Content Provider	Springer Nature Link
Author	Greenfield, Ben K. Teh, Swee J. Ross, John R. M. Hunt, Jennifer Zhang, GuoHua Davis, Jay A. Ichikawa, Gary Crane, David Hung, Silas S. O. Deng, DongFang Teh, Foo Ching Green, Peter G.
Copyright Year	2008
Abstract	Sacramento splittail (Pogonichthys macrolepidotus) is a species of special concern in California, due to multiple anthropogenic stressors. To better understand the potential impact of contaminant exposure, adult splittail were captured from the Sacramento-San Joaquin River Delta (California, USA) and analyzed for histopathology and contaminant exposure. Organochlorine contaminants (PCBs, DDTs, dieldrin, chlordanes, and PBDEs) and trace metals (Ag, As, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Se, Sn, V, and Zn) were detected in the tissues of all fish. In many samples, human health screening values were exceeded for PCBs (83 of 90 samples), DDTs (32 samples), and dieldrin (37 samples). In contrast, thresholds for fish effects were rarely exceeded. Histopathological analysis indicated the presence of macrophage aggregates in gonads, kidneys, and liver and a high incidence of liver abnormalities. In the liver, observed effects were often moderate to severe for glycogen depletion (55 of 95 fish), lipidosis (hepatocellular vacuolation; 51 fish), and cytoplasmic inclusion bodies (33 fish). Correlations between histopathology and tissue contaminant concentrations were weak and inconsistent. Significant correlations were observed between histopathology indicators and reductions in fish size, body condition, lipid content, and liver weight. These results suggest that splittail histopathology varies as a function of health and nutritional status, rather than exposure to legacy organic and metal pollutants.
Starting Page	270
Ending Page	281
Page Count	12
File Format	PDF
ISSN	00904341
Journal	Archives of Environmental Contamination and Toxicology
Volume Number	55
Issue Number	2
e-ISSN	14320703
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-01-10
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Environmental Monitoring/Analysis Soil Science & Conservation Environmental Chemistry Environmental Health Pollution Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Medicine Toxicology

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