Ontogenic and seasonal variations of metal content in a small pelagic fish (Trachurus picturatus) in northwestern African waters. (July 2020)

• Record Type: Journal Article
• Authors: Lozano-Bilbao, Enrique; Lozano, Gonzalo; Jiménez, Sebastián; Jurado-Ruzafa, Alba; Hardisson, Arturo; Rubio, Carmen; Weller, Dailos González; Paz, Soraya; Gutiérrez, Ángel J.
• Is Part Of: Marine pollution bulletin. Volume 156(2020)
• Publication Date: 2020-07
• Subjects: Blue jack mackerel -- Oceanographic season -- Metals and trace elements -- ICP-OES -- Marine pollution; Marine pollution -- Periodicals; Marine Biology -- Periodicals; Water Pollution -- Periodicals; Mer -- Pollution -- Périodiques; Publications périodiques; Pollution des mers; Lutte antipollution; Electronic journals; 363.7394
• DOI: 10.1016/j.marpolbul.2020.111251
• Languages: English
• ISSNs: 0025-326X

Abstract

Abstract: Marine organisms are exposed to great changes induced by human beings due, among others, to discharges into the oceans, increasing marine pollution. For this study, 294 specimens of Trachurus picturatus from the Canary Islands were analyzed during a period of 2 years. The concentration of 11 anthropic metals and trace elements was determined in each individual using the Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) technique. Statistical analyses were carried out considering the following factors: oceanographic season, maturity of the gonads, size of the specimens, season. Immature specimens had higher concentration in more metals than the mature specimens. This fact may be due to the fact that these specimens require a much higher metabolic rate due to their growth and do not detoxify like mature specimens. Highlights: The hot season have higher Cu, Li and Zn levels than the specimens in cold season. The immature specimens recorded a higher concentration than the mature specimens. Significant differences were found in the concentration of metals in all the analyzes.