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Dietary bioaccumulation of persistent organic pollutants in the common sole Solea solea in the context of global change. Part 2: Sensitivity of juvenile growth and contamination to toxicokinetic parameters uncertainty and environmental conditions variability in estuaries
Ecological Modelling ( IF 3.1 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.ecolmodel.2020.109196
Florence Mounier , Véronique Loizeau , Laure Pecquerie , Hilaire Drouineau , Pierre Labadie , Hélène Budzinski , Jérémy Lobry

Abstract The amount of potentially toxic chemicals in a fish depends on various environmental factors, such as temperature and feeding ecology, which can be affected by Global Changes (GC). The main objective of the present work was to study the relative influence of temperature, food quality and food availability on the growth and contamination of juveniles of common sole (Solea solea), a marine flatfish species known to be a relevant indicator of the nursery quality. It focuses on two Persistent Organic Pollutants (CB153 and L -PFOS) of legacy and emerging concern, respectively. To achieve this, we used a toxicokinetic (TK) model in which toxicant flows are mechanistically predicted using a bioenergetic model based on the Dynamic Energy Budget (DEB) theory. This modelling framework was applied to juvenile sole from the Gironde estuary (SW France) and allows accounting for the influence of environmental conditions on fish biological processes involved in toxicant fluxes. To compare their respective influence on model predictions of age, length, and contamination at puberty, we included in a global sensitivity analysis: (1) environmental variability gathered from literature for this particular estuary and (2) TK parameters (i.e. assimilation efficiency AE and elimination rate k ˙ e ) variability and uncertainty gathered from literature about each contaminant but for different fish species and experimental conditions. Then, model predictions were confronted to fish contamination measurements from the Gironde Estuary with different combinations of TK parameter values from literature. Results highlighted a key role of diet composition on fish contamination and growth while water temperature only affected growth. It stressed the need to focus on GC impact on benthic communities and their consequences on juvenile fish diet for future work on GC scenarios. Furthermore, for both chemical, the range of variability of TK parameters from experiments led to underestimated fish contaminations. The best model fits were obtained using TK parameter values from model applications: from Mounier et al. (n.d.) for CB153 (Solea solea, experiment, AE=0.8 and k ˙ e =0 d−1) and from de Vos et al. (2008) for PFOS (food chain of the Western Scheldt estuary, The Netherlands, AE=0.8 and k ˙ e =0.8 10−2.d−1).

中文翻译:

全球变化背景下常见唯一 Solea solea 中持久性有机污染物的膳食生物积累。第 2 部分:幼鱼生长和污染对河口毒代动力学参数不确定性和环境条件变化的敏感性

摘要 鱼体内潜在有毒化学物质的含量取决于各种环境因素,如温度和摄食生态,这些因素可能会受到全球变化 (GC) 的影响。目前工作的主要目的是研究温度、食物质量和食物供应对普通比目鱼 (Solea solea) 幼鱼生长和污染的相对影响,这是一种已知是苗圃质量的相关指标的海洋比目鱼. 它分别关注传统和新兴关注的两种持久性有机污染物(CB153 和 L -PFOS)。为了实现这一点,我们使用了毒物动力学 (TK) 模型,其中使用基于动态能量收支 (DEB) 理论的生物能模型对毒物流量进行机械预测。该建模框架应用于吉伦特河口(法国西南部)的幼鱼,可以解释环境条件对有毒物质通量中涉及的鱼类生物过程的影响。为了比较它们各自对青春期年龄、长度和污染模型预测的影响,我们纳入了一项全球敏感性分析:(1)从该特定河口的文献中收集的环境变异性和(2)TK 参数(即同化效率 AE 和消除率 k ˙ e ) 从关于每种污染物的文献中收集的变异性和不确定性,但针对不同的鱼类物种和实验条件。然后,模型预测面临来自吉伦特河口的鱼类污染测量结果,以及文献中 TK 参数值的不同组合。结果强调了饮食成分对鱼类污染和生长的关键作用,而水温仅影响生长。它强调需要关注 GC 对底栖群落的影响及其对幼鱼饮食的影响,以供未来有关 GC 情景的工作。此外,对于这两种化学品,来自实验的 TK 参数的可变范围导致低估了鱼类污染。使用来自模型应用程序的 TK 参数值获得最佳模型拟合:来自 Mounier 等人。(nd) 对于 CB153(Solea solea,实验,AE=0.8 和 k·e =0 d-1)以及来自 de Vos 等人。(2008) 全氟辛烷磺酸(荷兰西斯海尔德河口的食物链,AE=0.8 和 k ˙ e =0.8 10−2.d−1)。它强调需要关注 GC 对底栖群落的影响及其对幼鱼饮食的影响,以供未来有关 GC 情景的工作。此外,对于这两种化学品,来自实验的 TK 参数的可变范围导致低估了鱼类污染。使用来自模型应用程序的 TK 参数值获得最佳模型拟合:来自 Mounier 等人。(nd) 对于 CB153(Solea solea,实验,AE=0.8 和 k·e =0 d-1)以及来自 de Vos 等人。(2008) 全氟辛烷磺酸(荷兰西斯海尔德河口的食物链,AE=0.8 和 k ˙ e =0.8 10−2.d−1)。它强调需要关注 GC 对底栖群落的影响及其对幼鱼饮食的影响,以供未来有关 GC 情景的工作。此外,对于这两种化学品,来自实验的 TK 参数的可变范围导致低估了鱼类污染。使用来自模型应用程序的 TK 参数值获得最佳模型拟合:来自 Mounier 等人。(nd) 对于 CB153(Solea solea,实验,AE=0.8 和 k·e =0 d-1)以及来自 de Vos 等人。(2008) 全氟辛烷磺酸(荷兰西斯海尔德河口的食物链,AE=0.8 和 k ˙ e =0.8 10−2.d−1)。使用来自模型应用程序的 TK 参数值获得最佳模型拟合:来自 Mounier 等人。(nd) 对于 CB153(Solea solea,实验,AE=0.8 和 k·e =0 d-1)以及来自 de Vos 等人。(2008) 全氟辛烷磺酸(荷兰西斯海尔德河口的食物链,AE=0.8 和 k ˙ e =0.8 10−2.d−1)。使用来自模型应用程序的 TK 参数值获得最佳模型拟合:来自 Mounier 等人。(nd) 对于 CB153(Solea solea,实验,AE=0.8 和 k·e =0 d-1)以及来自 de Vos 等人。(2008) 全氟辛烷磺酸(荷兰西斯海尔德河口的食物链,AE=0.8 和 k ˙ e =0.8 10−2.d−1)。
更新日期:2020-09-01
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