Radioisotopes demonstrate the contrasting bioaccumulation capacities of heavy metals in embryonic stages of cephalopod species

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dc.contributor.author Lacoue-Labarthe, Thomas en_US
dc.contributor.author Villanueva, Roger en_US
dc.contributor.author Rouleau, Claude en_US
dc.contributor.author Oberh??Nsli, Fran??Ois en_US
dc.contributor.author Teyssi??, Jean-Louis en_US
dc.contributor.author Jeffree, Ross en_US
dc.contributor.author Bustamante, Paco en_US
dc.contributor.editor en_US
dc.date.accessioned 2012-10-12T03:33:30Z
dc.date.available 2012-10-12T03:33:30Z
dc.date.issued 2011 en_US
dc.identifier 2011001148 en_US
dc.identifier.citation Lacoue-Labarthe Thomas et al. 2011, 'Radioisotopes demonstrate the contrasting bioaccumulation capacities of heavy metals in embryonic stages of cephalopod species', Public library of Science, vol. 6, no. 11, pp. e27653-1-e27653-5. en_US
dc.identifier.issn 1932-6203 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/18176
dc.description.abstract Cephalopods play a key role in many marine trophic food webs and also constitute alternative fishery resources in the context of the ongoing decline in finfish stocks. Most coastal cephalopod species of commercial importance migrate into shallow waters during the breeding season to lay their eggs, and are consequently subjected to coastal contamination. Eggs of common cuttlefish Sepia officinalis, European squid Loligo vulgaris, common octopus Octopus vulgaris and the sepiolid Rossia macrosoma were exposed during embryonic development to dissolved 110mAg, 109Cd, 60Co, 54Mn and 65Zn in order to determine their metal accumulation efficiencies and distribution among different egg compartments. Cuttlefish eggs, in which hard shells enclose the embryos, showed the lowest concentration factor (CF) values despite a longer duration of exposure. In contrast, octopus eggs, which are only protected by the chorionic membrane, accumulated the most metal. Uptake appears to be linked to the selective retention properties of the egg envelopes with respect to each element. The study also demonstrated that the octopus embryo accumulated 110mAg directly from the dissolved phase and also indirectly through assimilation of the contaminated yolk. These results raise questions regarding the potential contrasting vulnerability of early life stages of cephalopods to the metallic contamination of coastal waters en_US
dc.language en_US
dc.publisher Public library of Science en_US
dc.title Radioisotopes demonstrate the contrasting bioaccumulation capacities of heavy metals in embryonic stages of cephalopod species en_US
dc.parent PLoS One en_US
dc.journal.volume 6 en_US
dc.journal.number 11 en_US
dc.publocation USA en_US
dc.identifier.startpage e27653-1 en_US
dc.identifier.endpage e27653-5 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 060200 en_US
dc.personcode 0000069103 en_US
dc.personcode 0000073344 en_US
dc.personcode 0000073345 en_US
dc.personcode 0000073321 en_US
dc.personcode 0000073311 en_US
dc.personcode 110409 en_US
dc.personcode 0000069113 en_US
dc.percentage 100 en_US
dc.classification.name Ecology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords en_US


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