遗留工业污染对底特律河黄鲈的长期影响,Environmental Toxicology and Chemistry

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遗留工业污染对底特律河黄鲈的长期影响
Environmental Toxicology and Chemistry ( IF 3.6 ) Pub Date : 2023-06-21 , DOI: 10.1002/etc.5701
Irene Yin-Liao ₁ , Pria N Mahabir ₁ , Aaron T Fisk ₂ , Nicholas J Bernier ₁ , Frédéric Laberge ₁

Affiliation

我们使用在圣克莱尔湖-底特律河系统中遗留工业污染不同的四个地点捕获的黄鲈（Perca flavescens ）来评估工业污染的挥之不去的亚致死影响。我们强调了对躯体和器官特异性生长（脑、肠道、肝脏、心室、性腺）的直接（毒性）和间接（慢性压力、食物网贫乏）影响的生物指标。我们的研究结果表明，底特律河最下游地区（特伦顿海峡）工业污染物沉积物含量较高与鲈鱼肝脏解毒活性和肝脏大小增加、大脑大小减小以及规模皮质醇含量减少有关。特伦顿海峡还显示出食物网的破坏，其中成年鲈鱼的营养位置低于饲料鱼。在圣克莱尔湖（米切尔湾）参考地点采样的鲈鱼的体细胞生长和相对肠道大小较低，可能是因为资源竞争加剧。用于确定导致器官生长部位差异的因素的模型表明，工业污染的挥之不去的影响最好用营养破坏来解释。因此，鱼类营养生态学的生物指标可能有利于评估水生生态系统的健康。环境毒理学2023；42：2158–2170。© 2023 作者。《环境毒理学和化学》由 Wiley periodicals LLC 代表 SETAC 出版。

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Lingering Effects of Legacy Industrial Pollution on Yellow Perch of the Detroit River

We used yellow perch (Perca flavescens) captured at four sites differing in legacy industrial pollution in the Lake St. Clair–Detroit River system to evaluate the lingering sublethal effects of industrial pollution. We emphasized bioindicators of direct (toxicity) and indirect (chronic stress, impoverished food web) effects on somatic and organ-specific growth (brain, gut, liver, heart ventricle, gonad). Our results show that higher sediment levels of industrial contaminants at the most downstream Detroit River site (Trenton Channel) are associated with increased perch liver detoxification activity and liver size, reduced brain size, and reduced scale cortisol content. Trenton Channel also displayed food web disruption, where adult perch occupied lower trophic positions than forage fish. Somatic growth and relative gut size were lower in perch sampled at the reference site in Lake St. Clair (Mitchell's Bay), possibly because of increased competition for resources. Models used to determine the factors contributing to site differences in organ growth suggest that the lingering effects of industrial pollution are best explained by trophic disruption. Thus, bioindicators of fish trophic ecology may prove advantageous to assess the health of aquatic ecosystems. Environ Toxicol Chem 2023;42:2158–2170. © 2023 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

更新日期：2023-06-21

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