Abstract The Neotropical region has a wide aquatic biodiversity, which is affected by anthropogenic activities. Mining has caused a negative impact on these ecosystems, directly affecting benthic communities. Aquatic macroinvertebrates are effective bioindicators of water quality, especially Chironomidae larvae, since these show high species richness, abundance, and sensitivity to human activities.The genus Polypedilum is among the most representative of the family Chironomidae. Research on these species is focused on their abundance and dominance in water bodies. In addition, several studies have addressed alterations in the external morphology of some Chironomidae due to mining pollution (heavy metals). However, little is known about the effects of mining on the internal morphology of these species.This study provides the first histological description of different systems and organs of Polypedilum sp. larvae. Furthermore, we report histopathological alterations in larvae collected from two tributaries affected by mining, namely Toldafría and La Elvira streams located in the municipalities of Villamaría and Manizales (Caldas – Colombia). Our findings show target organs of mining pollution in a species of Polypedilum, which represent potential early-warning histopathological biomarkers with relevant implications for water quality monitoring.

中文翻译：

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Polypedilum sp. 的组织学描述和组织病理学。（双翅目：摇蚊科）：采矿对支流影响的潜在生物标志物

摘要 新热带地区具有广泛的水生生物多样性，受人类活动的影响。采矿对这些生态系统造成了负面影响，直接影响了底栖群落。水生大型无脊椎动物是水质的有效生物指标，尤其是摇蚊科幼虫，因为它们显示出很高的物种丰富度、丰度和对人类活动的敏感性。多足类是摇蚊科最具代表性的属之一。对这些物种的研究集中在它们在水体中的丰度和支配地位。此外，一些研究已经解决了由于采矿污染（重金属）引起的某些摇蚊科外部形态的变化。然而，人们对采矿对这些物种内部形态的影响知之甚少。这项研究首次提供了对 Polypedilum sp. 不同系统和器官的组织学描述。幼虫。此外，我们报告了从受采矿影响的两个支流收集的幼虫的组织病理学改变，即位于 Villamaría 和 Manizales（Caldas – 哥伦比亚）市的 Toldafria 和 La Elvira 溪流。我们的研究结果显示了 Polypedilum 物种中采矿污染的目标器官，它们代表了潜在的早期预警组织病理学生物标志物，对水质监测具有相关意义。