PMID- 21713972
OWN - NLM
STAT- MEDLINE
DCOM- 20111027
LR  - 20181201
IS  - 1552-8618 (Electronic)
IS  - 0730-7268 (Linking)
VI  - 30
IP  - 9
DP  - 2011 Sep
TI  - Aquatic to terrestrial transfer of sediment associated persistent organic 
      pollutants is enhanced by bioamplification processes.
PG  - 2167-74
LID - 10.1002/etc.608 [doi]
AB  - Ephemeral emergent insects, such as mayflies (Hexagenia spp.), are commonly used 
      as biomonitors of persistent organic pollutants (POPs) and provide a vector for 
      aquatic-terrestrial contaminant transfer. Mayflies bioaccumulate 
      sediment-associated contaminants by bioconcentration and biomagnification during 
      the aquatic stage and concentrate POP residues postemergence due to 
      bioamplification, which occurs as a result of weight and lipid loss without 
      contaminant loss. The present study quantified polychlorinated biphenyl (PCB) 
      bioamplification in male and female emergent mayflies at three sites. Male 
      mayflies used 36 to 68% of their lipids during emergence, with the exception of 
      caged males that were prevented from flight. Females did not lose lipid content 
      between pre-emergent nymph and emerged life stages. Mass balance indicated no PCB 
      elimination between life stages. The mean PCB bioamplification factor, expressed 
      as the ratio of lipid-equivalent PCB concentrations across life stages, was 2.05 
      +/- 0.38 for male imagos/nymphs and 1.91 +/- 0.18 for male imago/subimago life 
      stages. For females, bioamplification factors were close to unity. Wildlife 
      consumers of imago stages of emergent mayflies can potentially increase their 
      total daily intake of PCBs by 36% depending on the sex-ratio composition of their 
      diet relative to animals that feed predominantly on nymph or subimago stages 
      during mass emergence events.
CI  - Copyright (c) 2011 SETAC.
FAU - Daley, Jennifer M
AU  - Daley JM
AD  - Great Lakes Institute for Environmental Research, University of Windsor, Windsor, 
      Ontario, Canada.
FAU - Corkum, Lynda D
AU  - Corkum LD
FAU - Drouillard, Ken G
AU  - Drouillard KG
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20110720
PL  - United States
TA  - Environ Toxicol Chem
JT  - Environmental toxicology and chemistry
JID - 8308958
RN  - 0 (Hazardous Substances)
RN  - 0 (Water Pollutants, Chemical)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - Animals
MH  - Environmental Monitoring/methods
MH  - Female
MH  - Food Chain
MH  - Fresh Water/chemistry
MH  - Geologic Sediments/chemistry
MH  - Hazardous Substances/metabolism
MH  - Insecta/*metabolism
MH  - Male
MH  - Nymph/metabolism
MH  - Polychlorinated Biphenyls/*metabolism
MH  - Sex Factors
MH  - Sex Ratio
MH  - Water Pollutants, Chemical/*metabolism
EDAT- 2011/06/30 06:00
MHDA- 2011/10/28 06:00
CRDT- 2011/06/30 06:00
PHST- 2011/03/18 00:00 [received]
PHST- 2011/05/03 00:00 [revised]
PHST- 2011/06/14 00:00 [accepted]
PHST- 2011/06/30 06:00 [entrez]
PHST- 2011/06/30 06:00 [pubmed]
PHST- 2011/10/28 06:00 [medline]
AID - 10.1002/etc.608 [doi]
PST - ppublish
SO  - Environ Toxicol Chem. 2011 Sep;30(9):2167-74. doi: 10.1002/etc.608. Epub 2011 Jul 
      20.