Document Detail

Linkages between cellular biomarker responses and reproductive success in oysters--Crassostrea virginica.
MedLine Citation:
PMID:  15178027     Owner:  NLM     Status:  MEDLINE    
The purpose of these studies was to evaluate if there were relationships between lysosomal destabilization or glutathione concentrations and gamete viability of oysters, Crassostrea virginica. Oysters were collected from field sites during the peak spawning period (May-June) during 2001 and 2002. Lysosomal destabilization rates and glutathione concentrations of hepatopancreas tissues (e.g. digestive gland) were determined. Eggs and sperm from the same adults were also used to conduct embryo development assays with reference seawater collected from a clean site, site water, and also a range of Cd concentrations (the Cd exposures were used to determine if there were differences in susceptibility to pollutants). Baseline embryo development success (e.g. percent normal development when the assays were conducted with reference seawater or site water) was related to lysosomal destabilization, but not glutathione status. However, the susceptibility of embryos to metal toxicity was related to glutathione status, i.e., sensitivity to Cd exposures increased with decreasing glutathione levels. These studies support the hypotheses that there are linkages between embryo development success and susceptibility to pollutant stress and cellular biomarker responses. These kinds of effects on reproductive success could lead to subtle but significant long-term effects on recruitment and viability of oyster populations.
A H Ringwood; J Hoguet; C Keppler; M Gielazyn
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Marine environmental research     Volume:  58     ISSN:  0141-1136     ISO Abbreviation:  Mar. Environ. Res.     Publication Date:    2004 Aug-Dec
Date Detail:
Created Date:  2004-06-04     Completed Date:  2004-08-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9882895     Medline TA:  Mar Environ Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  151-5     Citation Subset:  IM    
SC Department of Natural Resources, Marine Resources Research Institute, 217 Fort Johnson Road, Charleston, SC 29412, USA.
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MeSH Terms
Cadmium / toxicity*
Embryo, Nonmammalian / drug effects
Germ Cells / drug effects
Glutathione / metabolism*
Hepatopancreas / metabolism*
Linear Models
Lysosomes / metabolism*
Ostreidae / metabolism,  physiology*
Reproduction / drug effects
South Carolina
Reg. No./Substance:
70-18-8/Glutathione; 7440-43-9/Cadmium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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