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Metal contaminants in Largemouth bass (Micropterus salmoides) collected in large dams from Tejo River basin and small irrigation dams

2012Journal article Open access
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dc.contributor.authorAndrade, L.P.
dc.contributor.authorAntunes, Paulo
dc.contributor.authorPaulo, Luísa
dc.contributor.authorPereira, M.E.
dc.contributor.authorRodrigues, A.M.
dc.date.accessioned2012-12-08T17:14:49Z
dc.date.available2012-12-08T17:14:49Z
dc.date.issued2012
dc.description.abstractLargemouth bass (Micropterus salmoides) is a very important fresh water fish in the Portuguese regional cuisine mainly in the countryside (Central region and north Alentejo). Because there’s no aquaculture industry, all eaten largemouth bass in Portugal are collected in large dams (Basins of Tejo and Guadiana rivers) and small irrigation dams. For decades, the Tejo River received environmental pollutants from non-point and point sources that included intensive agriculture, industrial entities, municipalities and nuclear power plant. The aim of this work was to evaluate some metals (Cd, Cr, Cu, Fe, Hg, Mn, Pb, Zn) present on largemouth bass muscle tissue collected in the section of Tejo River that makes border between Portugal and Spain (TR) (N=9) and collected in three irrigation reservoirs (IR) located near Castelo Branco – Portugal (N=11). Individual were weighted and measured. Age was determined by examining fish scales, and sex determined by gonads observation. Samples for liver, dorsolateral muscle and tail muscle were collected from the right side of the fish. TR average weight 435.14g (±109.15), average length 278.33mm (±23.28), average K condition factor 1.98 (±0.09) and average age 3.11 years (±0,78) were similar (P>0.05) to IR average weight 410.84g (±137.71), average length 278.36mm (±31.13), average K condition factor 1.86 (±0.17) and average age 3.18 years (±0,60). Total mercury was determined in freeze-dried samples by atomic absorption spectrometry with thermal decomposition and gold amalgamation. For the other metal analysis, freeze-dried powders were mineralized with a mixture of HNO3 and H2O2, followed by ICP-OES quantification. Cd and Pb presented concentrations below LOQ (0.025 and 0.15mg.kg-1wet.weight, respectively) for all muscle samples. These values are below legal limits in EU (0.05 and 0.3mg.kg-1wet.weight, respectively). Average Hg levels are below legal limits (0.5mg.kg-1wet.weight) and muscle presented higher levels than liver. These contaminant levels indicate that are no contamination sources in the sampling sites. Cu, Cr, Fe, Mn and Zn are essential micronutrients. Their concentrations were not significantly different between dorsal and tail muscle and were higher in liver (P>0.05), with mean concentrations on muscle being, respectively: TR 0.16 (±0.07), <LOQ(0.03), 1.45 (±0.42), 0.04 (±0.04) and 3.76 (±0.39) mg.kg-1wet.weight; IR 0.16 (±0.02), <LOQ(0.03), 1.80 (±0.52), 0.05 (±0.05) and 4.17 (±0.56) mg.kg-1wet.weight. We concluded that metallic concentrations of largemouth bass muscle tissues were below the maximum permissible for a safety utilization of theses fishes in human nutrition.por
dc.identifier.citationANDRADE, L.P. [et al.] (2012) - Metal contaminants in Largemouth bass (Micropterus salmoides) collected in large dams from Tejo River basin and small irrigation dams. In Congreso Internacional de Ciencia y Tecnología de los Alimentos, 4, Córdoba/Argentina, 2012 - Actas. Ministerio de Ciencia y Tecnología de la Provincia de Córdoba, p. 524.por
dc.identifier.isbn13: 978-987-28845-0-5
dc.identifier.urihttp://hdl.handle.net/10400.11/1575
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherMinisterio de Ciencia y Tecnología de la Provincia de Córdoba / Universidad Nacional de Córdobapor
dc.relationCERNAS - supported by FCT under the project PEst-OE/AGR/UI0681/2011por
dc.relation.publisherversionhttp://www.mincytalimentos.cba.gov.ar/en/por
dc.subjectMetalspor
dc.subjectMuscle tissuepor
dc.subjectMicropterus salmoidespor
dc.subjectLargemouth basspor
dc.titleMetal contaminants in Largemouth bass (Micropterus salmoides) collected in large dams from Tejo River basin and small irrigation damspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceCórdoba, Argentinapor
oaire.citation.endPage524por
oaire.citation.startPage524por
oaire.citation.titleIV Congreso Internacional de Ciencia y Tecnología de los Alimentos Córdoba/Argentina 2012 : Actaspor
person.familyNameMota Pinto de Andrade
person.familyNameRodrigues
person.givenNameLuís Pedro
person.givenNameA.M.
person.identifier.ciencia-idDA1F-0C25-23F1
person.identifier.ciencia-id2717-72E0-9A01
person.identifier.orcid0000-0002-9206-2350
person.identifier.orcid0000-0002-5862-3898
person.identifier.scopus-author-id55620721900
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication2bb821ef-7e5a-4a7a-9064-45b5fc394432
relation.isAuthorOfPublicationca25a28d-6d42-4f4a-b22a-8f6852a41294
relation.isAuthorOfPublication.latestForDiscoveryca25a28d-6d42-4f4a-b22a-8f6852a41294

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