Susceptibility of eastern oyster early life stages to road surface polycyclic aromatic hydrocarbons (PAHs).

Details

• Creators:
  Lacouture, Richard V. ; Larsen, Randolph K. ; Anderson, Jon T.
• Corporate Creators:
  Morgan State University
• Corporate Contributors:
  United States. Department of Transportation. University Transportation Centers (UTC) Program
• Subject/TRT Terms:
  • Animals
  • Invertebrates
  • Environmental impacts
  • Environmental quality
  • Environmental impact analysis
  • Environmental risk assessment
  • Pollution
  • Water pollution
  • Water quality management
  • PAHs
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• Resource Type:
  Tech Report
• Geographical Coverage:
  Maryland
• Edition:
  Final report.
• Corporate Publisher:
  Morgan State University. National Transportation Center
• Abstract:
  Polycyclic aromatic hydrocarbons (PAHs) are a class of chemical compounds that are mostly ; anthropogenic in nature, and they can become persistent organic contaminants in aquatic ; ecosystems. Runoff from impervious surfaces is one of the many ways contaminants enter the ; aquatic realm. Three different PAH concentrations were used to investigate the effects on oysteregg ; fertilization, embryonic transformation to the D-shell veliger larva, and larvae settlement onto ; hard substrate. The three different concentrations of PAHs ranged from one that is ; environmentally relevant to the concentrations found in runoff from road surfaces, another that ; was tenfold more concentrated, and finally one that was one hundred times more concentrated. ; The extremely concentrated solution had negative effects on fertilization success after one hour of ; exposure, while the lesser concentrations showed significant deleterious effects after two hours of ; exposure. All of the three PAH solutions caused significant numbers of abnormalities in the ; embryonic transformation of embryos to D-stage larvae. Finally, the two more concentrated PAH ; solutions significantly inhibited the oyster larvae in successfully setting on the hard substrate. ; This study‟s results provide evidence that PAHs entering an aquatic ecosystem from runoff from ; road surfaces have the potential to inhibit oyster reproduction by negatively impacting three ; critical processes in the early life cycle of the Eastern oyster.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24488/dot_24488_DS1.pdf
• File Type:
  [PDF - 575.79 KB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:97e94b3e1a54a7dac3640db05a0f965a5f1fc009f32bcab889e4166d1c3bd6a0