Sea snail (Hexaplex trunculus) and sea cucumber (Holothuria polii) as potential sentinel species for organic pollutants and trace metals in coastal ecosystems. (July 2021)

• Record Type: Journal Article
• Authors: León, Víctor M.; Moreno-González, Rubén; Besada, Victoria; Martínez, Fulgencio; Ceruso, Carlota; García, Víctor; Schultze, Fernando; Campillo, Juan Antonio
• Is Part Of: Marine pollution bulletin. Volume 168(2021)
• Publication Date: 2021-07
• Subjects: Gastropod -- Holothurian -- Bioaccumulation -- PAHs -- PCBs -- DDXs -- Trace metals -- Mar Menor lagoon; 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.2021.112407
• Languages: English
• ISSNs: 0025-326X

Abstract

Abstract: The seasonal bioaccumulation of trace metals, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and organochlorinated pesticides (OCPs) in sea snail ( Hexaplex trunculus ) and sea cucumber ( Holothuria polii ) from Mar Menor lagoon were characterised. The highest concentrations of p, p'-DDE were detected in the central and south part of Mar Menor lagoon. However, the highest concentrations of metals in sea snail and holothurians were detected in the influence area of El Beal wadi. Biomagnification factors (BMF) in sea snail from cockle (sea snail-cockle concentration ratio) were higher than 5 for metal and organochlorinated compounds. However, similar concentrations were observed in both species for PAHs due to gastropods capability of metabolising these pollutants. Consequently, sea snail is proposed as a sentinel for trace metals, PCBs and OCPs in the coastal lagoons, not only due to its bioaccumulation and biomagnification capacity but also the easy sampling and amply distribution in many coastal areas. Graphical abstract: Unlabelled Image Highlights: OCs and metals levels showed spatial variations in sea snail and holothuria No significant bioaccumulation was observed in holothurians from sediments Biomagnification of As, Cd, Cu, Pb and OCs in sea snail from cockle was confirmed Sea snail proposed as a sentinel for trace metals and organochlorinated contaminants