Bioaccumulation of heavy metals in Bothriocephalus acheilognathi cestoda and the definitive host, Cyprinus carpio (L. 1758)

Q2 Veterinary
Bushra H. Al-Niaeemi, Marwah H. Dawood
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Abstract

Concentrations of three heavy metals as Manganese, Nickel, and Cobalt were estimated in two levels in the food chain; the omnivorous Cyprinus carpio fish and its intestinal cestode Bothriocephalus acheilognathi as end consumer (endoparasite) using atomic absorption technique. The study was performed in two locations in Tigris River, Al Rashedia and Sherikhan villages/Mosel City/ Nineveh Province between June 2022 to October 2022. The concentration of the three chosen metals: Mn, Ni, and Co, was estimated in the liver, gills, intestine, and skeletal muscles in both infected and uninfected fish and added to tissues of the cached Cestoda. Manganese concentration was the highest in the gills of both infected and uninfected fish 14.597, 21.773 µg/gm fresh weight, nickel concentration was the highest in the liver 4.44 and 8.10µg/gm fresh weight, and cobalt concentration was the highest in the intestine 2.467 and 7.79 µg/gm fresh weight. The difference in values was significant at P≤0.05 in the infected and uninfected fish, respectively. Accumulation of the three metals Mn, Ni, and Co was the lowest in fish skeletal muscles. Mn had the highest accumulation mean in fish organs 11.846 µg/gm fresh weight, Ni was the next 4.094 µg/gm, and Co was the lowest 2.616 µg/gm. The concentration of Mn and Ni in the cestode B. acheilognathi tissues 22.53 and 10.45 µg/gm was about two folds of that found in its host fish C. carpio. The concentration of Co was approximate in the worm tissues and its host fish. In conclusion heavy metals in C. carpio didn’t exceed the WHO and the FAO set permissible levels. B. acheilognathi cestoda could be a useful bioindicator for heavy metal contamination in aquatic ecosystems.
重金属在大头鱼和最终寄主鲤鱼体内的生物积累(L. 1758)
据估计,锰、镍和钴等三种重金属在食物链中的浓度分为两个层次;利用原子吸收技术对杂食性鲤及其肠道寄生体Bothriocephalus acheilognathi作为最终消费者(内寄生虫)进行研究。该研究于2022年6月至2022年10月在底格里斯河、Al Rashedia和Sherikhan村/摩塞尔市/尼尼微省的两个地点进行。在感染和未感染的鱼的肝脏、鳃、肠和骨骼肌中,以及在贮藏的鱼的组织中,估计了所选择的三种金属:锰、镍和钴的浓度。感染鱼和未感染鱼的鳃中锰浓度最高,分别为14.597和21.773µg/gm鲜重;镍浓度最高,分别为4.44和8.10µg/gm鲜重;钴浓度最高,分别为2.467和7.79µg/gm鲜重。染病鱼与未染病鱼之间差异显著(P≤0.05)。鱼类骨骼肌中锰、镍、钴三种金属的积累量最低。鱼器官中Mn的平均积累量最高,为11.846µg/gm鲜重,其次是Ni,为4.094µg/gm, Co最低,为2.616µg/gm。鱼组织中Mn和Ni的浓度分别为22.53µg/gm和10.45µg/gm,约为宿主鱼C. carpio的2倍。Co在线虫组织及其宿主鱼体内的浓度接近。综上所述,鲫鱼中重金属含量未超过世界卫生组织和联合国粮农组织规定的允许水平。蓝藻可作为水体生态系统重金属污染的有效生物指标。
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来源期刊
Iraqi journal of Veterinary Sciences
Iraqi journal of Veterinary Sciences Veterinary-Veterinary (all)
CiteScore
3.40
自引率
0.00%
发文量
120
审稿时长
25 weeks
期刊介绍: Iraqi Journal of Veterinary Sciences (Iraqi J. Vet. Sci.) is an online, peer reviewed, Open Access and non-profit journal published biannually by the College of Veterinary Medicine, University of Mosul, Iraq. The Journal publishes in Arabic or English papers in various fields of veterinary sciences. Upon submitting an article, authors are asked to indicate their agreement to abide by an open access Creative Commons license (CC-BY-ND). Under the terms of this license, authors retain ownership of the copyright of their articles. However, the license permits any user to download, print out, extract, reuse, archive, and distribute the article, so long as appropriate credit is given to the authors and the source of the work.
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