Biologically incorporated dietary silver has no ionoregulatory effects in American red crayfish (Procambarus clarkii).

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Show simple item record Mann, RM Grosell, M Bianchini, A Wood, CM 2010-05-28T09:43:26Z 2004-02
dc.identifier.citation Environmental toxicology and chemistry / SETAC, 2004, 23 (2), pp. 388 - 395
dc.identifier.issn 0730-7268
dc.identifier.other C1UNSUBMIT en_US
dc.description.abstract Two silver-contaminated diets were prepared by exposing juvenile rainbow trout for 8 d to waterborne silver thiosulfate as Ag at either 0.1 microg/L (low-Ag diet) or 80 mg/L (high-Ag diet). The level of total Ag accumulated in whole low-Ag fish was below the detection limit of analysis. Whole high-Ag fish accumulated Ag at 21.3 nmol/g. The livers of the low- and high-Ag fish accumulated Ag at 0.43 nmol/g and 1.01 micromol/g, respectively. The Ag-contaminated fish were then fed whole to adult crayfish in an 80-d dietary study to determine the effects of long-term trophic accumulation of Ag. In a second experiment, the livers of the high-Ag trout were fed to juvenile crayfish for either one or five weeks. Accumulation of Ag was demonstrated in both adult and juvenile crayfish. Silver accumulation in juvenile crayfish peaked at approximately 650 nmol/g at three weeks, after which Ag depuration occurred. In adult crayfish that consumed the high-Ag diet, the hepatopancreas accumulated more than 90% of assimilated Ag, rising 1,000-fold over control animals to approximately 740 nmol/g at 80 d. Crayfish that consumed the low-Ag diet had small, statistically insignificant elevations of Ag in some tissues. Dietary Ag had no effect on juvenile crayfish growth or adult mortality. Disturbances in osmoregulation, which are normally associated with acute waterborne Ag exposure, were not detected. Dietary Ag also had no effect on hemolymph concentrations of Na+, Cl-, Ca2+, Mg2+, or Cu; did not affect the concentration kinetics of Na+ or Cl- influx; and had no effect on the activity of gill Na+/K+-dependent adenosine triphosphatase. Hemolymph concentrations of glucose and lactate were similarly unaffected, indicating an absence of stress-related metabolic disturbance. However, a disproportionately low number of ecdysis events occurred among crayfish that consumed the high-Ag diet.
dc.format Print
dc.language eng
dc.relation.isbasedon 10.1897/02-572
dc.title Biologically incorporated dietary silver has no ionoregulatory effects in American red crayfish (Procambarus clarkii).
dc.type Journal Article
dc.parent Environmental toxicology and chemistry / SETAC
dc.journal.volume 2
dc.journal.volume 23
dc.journal.number 2 en_US
dc.publocation USA en_US
dc.identifier.startpage 388 en_US
dc.identifier.endpage 395 en_US DVCRch.Institute for Water & Environmental Resource Mgmnt en_US
dc.conference Verified OK en_US
dc.for 0399 Other Chemical Sciences
dc.personcode 998973
dc.percentage 100 en_US Other Chemical Sciences en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords Animals
dc.description.keywords Oncorhynchus mykiss
dc.description.keywords Liver
dc.description.keywords Hepatopancreas
dc.description.keywords Astacoidea
dc.description.keywords Silver
dc.description.keywords Diet
dc.description.keywords Molting
dc.description.keywords Water-Electrolyte Balance
dc.description.keywords Biological Transport, Active
dc.description.keywords Ion Transport
dc.description.keywords Ontario
dc.description.keywords Gills
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
utslib.collection.history Uncategorised (ID: 363)
utslib.collection.history Closed (ID: 3)

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