PMID- 22236098
OWN - NLM
STAT- MEDLINE
DCOM- 20120709
LR  - 20131121
IS  - 1520-5851 (Electronic)
IS  - 0013-936X (Linking)
VI  - 46
IP  - 4
DP  - 2012 Feb 21
TI  - Bioamplification and the selective depletion of persistent organic pollutants in 
      Chinook salmon larvae.
PG  - 2420-6
LID - 10.1021/es204003a [doi]
AB  - The maternal provisioning of yolk to eggs transfers significant quantities of 
      persistent organic pollutants (POPs). As yolk utilization progresses via 
      metabolic activity, there is a potential to realize further increases in POP 
      concentrations if yolk lipids are depleted at a faster rate than POPs, a 
      condition referred to as bioamplification. This study investigated the 
      bioamplification of POPs in Chinook salmon ( Oncorhynchus tshawytscha ) eggs and 
      larvae. Chinook eggs were sampled from the Credit River, ON, Canada, and brought 
      to an aquaculture facility where they were fertilized, incubated, and maintained 
      posthatch until maternally derived lipid reserves became depleted (approximately 
      168 days). The loss of chemicals having an octanol-water partition coefficient 
      (log K(OW)) greater than 5.8 was slow to negligible from days 0-135. However, 
      during the increase in water temperatures in early spring, K(OW)-dependent 
      elimination of POPs was observed. Bioamplification was maximized for the highest 
      log K(OW) POPs, with an approximate 5-fold increase in lipid equivalents 
      concentrations in 168 day old larvae as compared to newly fertilized eggs. This 
      study demonstrates that later yolk-sac Chinook larvae (before exogenous feeding) 
      are exposed to higher lipid equivalents POP concentrations than predicted by 
      maternal deposition, which could lead to underestimates in the toxicity of 
      critical life stages.
FAU - Daley, Jennifer M
AU  - Daley JM
AD  - Great Lakes Institute for Environmental Research, University of Windsor, Windsor, 
      Ontario, Canada. daleyj@uwindsor.ca
FAU - Leadley, Todd A
AU  - Leadley TA
FAU - Pitcher, Trevor E
AU  - Pitcher TE
FAU - Drouillard, Ken G
AU  - Drouillard KG
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120201
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Lipids)
RN  - 0 (Water Pollutants, Chemical)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - Animals
MH  - Embryo, Nonmammalian/*metabolism
MH  - Environmental Monitoring
MH  - Lipids
MH  - Ontario
MH  - Polychlorinated Biphenyls/metabolism
MH  - Salmon/*metabolism
MH  - Water Pollutants, Chemical/*metabolism
MH  - Zygote/*metabolism
EDAT- 2012/01/13 06:00
MHDA- 2012/07/10 06:00
CRDT- 2012/01/13 06:00
PHST- 2012/01/13 06:00 [entrez]
PHST- 2012/01/13 06:00 [pubmed]
PHST- 2012/07/10 06:00 [medline]
AID - 10.1021/es204003a [doi]
PST - ppublish
SO  - Environ Sci Technol. 2012 Feb 21;46(4):2420-6. doi: 10.1021/es204003a. Epub 2012 
      Feb 1.