Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/9278
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Lipid and fatty acid composition, and persistent organic pollutant levels in tissues of migrating Atlantic bluefin tuna (Thunnus thynnus, L.) broodstock
Authors: Sprague, Matthew
Dick, James R
Medina, Antonio
Tocher, Douglas R
Bell, J Gordon
Mourente, Gabriel
Contact Email: matthew.sprague@stir.ac.uk
Keywords: Atlantic bluefin tuna
Thunnus thynnus
Persistent organic pollutants (POPs)
PCDD/Fs
DL-PCBs
PBDEs
Lipids
Fatty acids.
Issue Date: Dec-2012
Publisher: Elsevier
Citation: Sprague M, Dick JR, Medina A, Tocher DR, Bell JG & Mourente G (2012) Lipid and fatty acid composition, and persistent organic pollutant levels in tissues of migrating Atlantic bluefin tuna (Thunnus thynnus, L.) broodstock, Environmental Pollution, 171, pp. 61-71.
Abstract: Lipid class, fatty acid and POP levels were measured in migrating Atlantic bluefin tuna (ABT) tissues caught off the Barbate coast, Spain. Tissue lipids were largely characterized by triacylglycerol, reflecting large energy reserves accumulated prior to reproductive migration. Fatty acid compositions of muscle, liver and adipose exhibited similar profiles, whereas gonads showed a higher affinity for docosahex- aenoic acid. Tissue POP concentrations correlated positively with percentage triacylglycerol and nega- tively with polar lipids. Highest POP concentrations were in adipose and lowest in gonads, reflecting lipid content. DL-PCBs contributed most to total PCDD/F þ DL-PCB levels, with mono-ortho concentrations higher in tissues, whereas non-ortho PCBs contributed greater WHO-TEQs due to differences in TEFs. PBDE47 was the most prominent BDE congener in tissues, probably through biotransformation of BDE99 and other higher brominated congeners. The perceived POP risk from ABT consumption should be balanced by the well-established beneficial effects on human health of omega-3 fatty acids.
Type: Journal Article
URI: http://hdl.handle.net/1893/9278
DOI Link: http://dx.doi.org/10.1016/j.envpol.2012.07.021
Rights: Publisher policy allows this work to be made available in this repository. Published in Environmental Pollution, Volume 171, December 2012, Pages 61–71 by Elsevier. The original publication is available at http://dx.doi.org/10.1016/j.envpol.2012.07.021
Affiliation: Aquaculture
Aquaculture
University of Cadiz
Aquaculture
Aquaculture
University of Cadiz

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