The accumulation of lead and mercury from seawater and their depuration by eggs of the spotted dogfish Scyliorhinus canicula (Chondrichthys)

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Show simple item record Jeffree, R Oberhaensli, F Teyssie, J 2012-02-02T07:45:12Z 2008-01
dc.identifier.citation Archives Of Environmental Contamination And Toxicology, 2008, 55 (3), pp. 451 - 461
dc.identifier.issn 0090-4341
dc.identifier.other C1UNSUBMIT en_US
dc.description.abstract Radiotracer experiments using Pb-210 and Hg-203 demonstrated that eggs of the spotted dogfish Scyliorhinus canicula absorbed lead and inorganic mercury directly from seawater over 21 days of experimental exposure, attaining total egg concentration factors (CFs) relative to water of approximately 400 for Pb and 180 for Hg, predominantly (>= 98%) due to their accumulation by the collagenous egg case. The rates of accumulation of both Pb and Hg by the total egg were significantly (P < 0.0001) reduced by its increasing age since parturition, whereas only the rate of depuration of Pb was reduced (P < 0.0001) with increasing age; these effects indicate a declining chemical reactivity of the egg case that may be due to the continued tanning of the case following parturition. The egg case per se, attained average CFs of about 1,500 and 850 for Pb and Hg, respectively. Both Pb and Hg showed declining concentration gradients from the exterior to the interior membranes of the wall of the egg case; CFs for Pb declined from 3,500 to 2,000 and for Hg from 5,000 to 500. Comparison of concentrations in separate membranes also demonstrated significant (P <= 0.01) depurations of Hg from the external and internal membranes during the loss experiments.
dc.publisher Springer
dc.relation.isbasedon 10.1007/s00244-007-9103-4
dc.title The accumulation of lead and mercury from seawater and their depuration by eggs of the spotted dogfish Scyliorhinus canicula (Chondrichthys)
dc.type Journal Article
dc.parent Archives Of Environmental Contamination And Toxicology
dc.journal.volume 3
dc.journal.volume 55
dc.journal.number 3 en_US
dc.publocation New York, USA en_US
dc.identifier.startpage 451 en_US
dc.identifier.endpage 461 en_US SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0602 Ecology
dc.personcode 110409
dc.percentage 100 en_US Ecology 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 heavy-metals
dc.description.keywords heavy-metals
dc.description.keywords transport
dc.description.keywords transport
dc.description.keywords bioaccumulation
dc.description.keywords bioaccumulation
dc.description.keywords radionuclides
dc.description.keywords radionuclides
dc.description.keywords speciation
dc.description.keywords speciation
dc.description.keywords waters
dc.description.keywords waters
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 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
pubs.consider-herdc false
utslib.collection.history Uncategorised (ID: 363)
utslib.collection.history Closed (ID: 3)
utslib.collection.history Closed (ID: 3)

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