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Variations in PCB concentrations between genders of six warmwater fish species in Lake Logan Martin, Alabama, USA.
Rypel, Andrew L; Findlay, Robert H; Mitchell, Justin B; Bayne, David R.
Afiliação
  • Rypel AL; Department of Fisheries and Allied Aquacultures, Rivers and Reservoirs Section, Auburn University Auburn, AL 36849, USA. RypeL001@bama.ua.edu
Chemosphere ; 68(9): 1707-15, 2007 Aug.
Article em En | MEDLINE | ID: mdl-17490714
We collected and analyzed 955 individual fish (six species) for sexual differences in PCB bioaccumulations from a southeastern, USA reservoir. Using 2-way ANCOVAs, we found significant differences in fillet PCB concentrations between sexes for channel catfish (Ictalurus punctatus), largemouth bass (Micropterus salmoides) and spotted bass (Micropterus punctulatus). Striped bass (Morone saxatilus), black crappie (Pomoxis nigromaculatus) and freshwater drum (Aplodinotus grunniens) did not display differences between sexes in PCB concentrations. We suspect that sexual differences may be due to biological differences in reproduction, relative motility and lipid deposition. For one species (striped bass), sexual differences in PCB concentrations were inconsistent with a study in the Hudson River suggesting that sexual differences in bioaccumulations can change across ecosystems. Two species which did show sexual differences, largemouth bass and channel catfish, are often chosen as representative species (e.g., "piscivore" and "benthivore") in contaminant monitoring in many USA states indicating human consumption and risk management decisions would be improved if an equal number of male and female fish were included in composite PCBs analysis. This could reduce variability in fish PCBs data from which consumption advisories are based.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Caracteres Sexuais / Bifenilos Policlorados / Peixes / Água Doce Tipo de estudo: Prognostic_studies Limite: Animals País/Região como assunto: America do norte Idioma: En Ano de publicação: 2007 Tipo de documento: Article
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Caracteres Sexuais / Bifenilos Policlorados / Peixes / Água Doce Tipo de estudo: Prognostic_studies Limite: Animals País/Região como assunto: America do norte Idioma: En Ano de publicação: 2007 Tipo de documento: Article