Université de Carthage, Faculté des Sciences de Bizerte, LR01ES14, Laboratoire de Biosurveillance de l'Environnement, 7021 Zarzouna, Tunisie.
Université Paris-Saclay, CNRS, GEOPS, 91405, Orsay, France.
Mar Pollut Bull. 2021 Dec;173(Pt B):113063. doi: 10.1016/j.marpolbul.2021.113063. Epub 2021 Oct 28.
Lipid peroxidation level (LPO), shell biometry, shape, elemental content, and microstructure were studied in three populations of Siphonaria pectinata in the complex lagoon-channel of Bizerte across a coastal pollution gradient (northern Tunisia). LPO was found in higher concentrations in harbour populations, and shells had centred apex and were flattened. Shells were also thicker, particularly in the inner layer, with many fibrous inter-beds formed. Difference in crystallization pattern was observed in numerous shells from all three populations, being more common in harbours. From the control station to the contaminated stations, shell elemental changes were observed, with a decrease in Ca, P, Sr, and S and an increase in Cl, Cd, Cu, Fe, and K. All of these findings suggested that shell alterations could be used as a good biomarker for coastal contamination.
研究了比塞大复杂泻湖-海峡中三种 Siphonaria pectinata 种群的脂质过氧化水平（LPO）、壳生物计量学、形状、元素含量和微观结构，该地区存在沿海岸污染梯度的情况（突尼斯北部）。在港口种群中发现了更高浓度的 LPO，并且贝壳的顶点居中且变平。贝壳也更厚，特别是在内层，有许多纤维状的层间。在来自所有三个种群的许多贝壳中观察到了不同的结晶模式，在港口更为常见。从对照站到污染站，观察到贝壳元素的变化，Ca、P、Sr 和 S 减少，Cl、Cd、Cu、Fe 和 K 增加。所有这些发现表明，贝壳的改变可以作为沿海污染的良好生物标志物。
