Influence of sex and maturity state on trace elements content in liver and muscle of the Sciaenidae Totoaba macdonaldi

PeerJ

article

Lia C. Méndez-Rodríguez¹  Berenice Hernández-Aguilar¹  Juan A. de Anda-Montañez²  Eduardo F. Balart²  Martha J. Román-Rodríguez³  Tania Zenteno-Savín¹ 

[1] Programa de Planeación Ambiental y Conservación;Programa de Ecología Pesquera;Comisión de Ecología y Desarrollo Sustentable del Estado de Sonora

关键词: Metals;    Nutrition;    Totoaba;    Fish;   

DOI  :  10.7717/peerj.11068

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

BackgroundThe fish Totoaba macdonaldi is endemic to the Upper Gulf of California. Its migratory movements involve sites with high levels of trace elements in the environment that can accumulate in tissues. In this study, lead (Pb), copper (Cu), cadmium (Cd), zinc (Zn) and iron (Fe) concentrations in male and female totoaba liver and muscle were quantified at various sexual maturity stages along the species’ geographic distribution.MethodsGeneralized linear models were used to explore associations between trace element concentrations and season of the year, sex/maturity stage, and total fish length.ResultsNo detectable Pb concentrations were recorded in liver or muscle; Cu, Cd, Zn and Fe contents in totoaba liver and muscle were typical of fish inhabiting areas with no contamination issues and are within international maximum permissible levels for human consumption. Variations in the content of Cd, Cu, Zn and Fe in liver of totoaba seem to be more related to the feeding and reproductive physiology of this species than as result of environmental exposure. Results suggest that consumption of totoaba muscle does not pose a public health risk. Furthermore, depending on the sex/maturity stage of totoaba, this fish’s muscle may provide approximately 70% Cu, 60% Zn and 100% Fe of the recommended dietary reference intake.

【 授权许可】

CC BY