Belbel Fatma, Boukheroufa Mehdi, Micle Valer, Sur Ioana Monica, Sakraoui Feriel, Smical Irina
Environmental Research Center (CRE), Annaba 23000, Algeria.
Laboratory of Ecobiology for Marine Environments and Coastal Areas, Faculty of Sciences, Badji Mokhtar Annaba University, 12, Annaba 23000, Algeria.
Animals (Basel). 2025 Jan 6;15(1):114. doi: 10.3390/ani15010114.
Heavy metal pollution has complex impacts on terrestrial ecosystems, affecting biodiversity, trophic relationships, species health, and the quality of natural resources. This study aims to validate a non-invasive method for detecting heavy metals (Cd, As, Zn, Cu, Cr) in micromammalian prey, which constitute the primary diet of the common genet (), a mesocarnivore sensitive to habitat degradation. By focusing on prey remains (hair and bones) rather than entire fecal samples, this approach leverages the genet's selective feeding habits to assess the bioaccumulation of contaminants in its preferred prey. Conducted in the Edough forest massif during the winter of 2021, the study analyzed 39 fecal samples, collected from the following two contrasting environments: a natural habitat and an area impacted by an open landfill. Results revealed significant levels of heavy metals, with higher concentrations in bones compared to hair, and increased accumulation in prey from the anthropized environment. Monitoring these contaminants in selective predators, such as the genet, offers a promising approach to better understanding environmental contamination and implementing measures to protect ecosystems and the species that depend on them.
重金属污染对陆地生态系统有着复杂的影响,影响生物多样性、营养关系、物种健康以及自然资源质量。本研究旨在验证一种用于检测小型哺乳动物猎物中重金属(镉、砷、锌、铜、铬)的非侵入性方法,这些小型哺乳动物是灵猫(一种对栖息地退化敏感的中型食肉动物)的主要食物来源。通过关注猎物残骸(毛发和骨骼)而非整个粪便样本,该方法利用灵猫的选择性摄食习性来评估其偏好猎物中污染物的生物累积情况。该研究于2021年冬季在埃杜山地块进行,分析了从以下两种形成对比的环境中收集的39份粪便样本:自然栖息地和受露天垃圾填埋场影响的区域。结果显示重金属含量显著,骨骼中的浓度高于毛发,且来自人为影响环境的猎物中累积量增加。监测像灵猫这样的选择性捕食者中的这些污染物,为更好地理解环境污染以及采取措施保护生态系统和依赖它们的物种提供了一种有前景的方法。