E. Oberdorster et al., Benthic community structure and biomarker induction in grass shrimp in an estuarine system, ARCH ENV C, 37(4), 1999, pp. 512-518
Citations number
28
Categorie Soggetti
Environment/Ecology,"Pharmacology & Toxicology
Journal title
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
The impact of polycyclic aromatic hydrocarbons (PAHs) and lead contaminatio
n on benthic community structure and grass shrimp (Palaeomonetes sp.) bioch
emical markers were investigated in a bayou that has been heavily contamina
ted by PAHs and heavy metals. The benthic community had decreased species r
ichness as well as decreased numbers of individuals along a contamination g
radient. Grass shrimp collected in the field showed a contaminant-gradient
increase in heat shock protein 63 and cytochrome P450 1A (as measured by EC
OD metabolism). Grass shrimp had elevated ECOD metabolism when exposed in t
he laboratory to sediments from the most contaminated site. However, indivi
dual variation was too great for statistically significant changes. In addi
tion, heat shock protein levels were not significantly elevated in laborato
ry exposed shrimp. Benthic community structure and wild-caught grass shrimp
are clearly impacted in this bayou.