Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/30910
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Toxicological mechanism of excessive copper supplementation: Effects on coloration, copper bioaccumulation and oxidation resistance in mud crab Scylla paramamosain
Author(s): Luo, Jiaxiang
Zhu, Tingting
Wang, Xuexi
Chen, Xin
Yuan, Ye
Jin, Min
Betancor, Monica
Tocher, Douglas
Zhou, Quicun
Contact Email: m.b.betancor@stir.ac.uk
Keywords: Copper
Coloration
Oxidation resistance
Mud crab Scylla paramamosain
Issue Date: 5-Aug-2020
Citation: Luo J, Zhu T, Wang X, Chen X, Yuan Y, Jin M, Betancor M, Tocher D & Zhou Q (2020) Toxicological mechanism of excessive copper supplementation: Effects on coloration, copper bioaccumulation and oxidation resistance in mud crab Scylla paramamosain. Journal of Hazardous Materials, 395, Art. No.: 122600. https://doi.org/10.1016/j.jhazmat.2020.122600
Abstract: Copper is a widespread pollutant in marine environments, and marine animals can ingest large amounts of copper through the food chain. Here, an 8-week feeding trial was designed to investigate the effects of different dietary copper levels on coloration, copper bioaccumulation, stress response and oxidation resistance of juvenile mud crab Scylla paramamosain. The results indicated that crabs fed the diet with 162 mg/kg copper exhibited a dark-blue carapace and hemolymph. The accumulation of copper in tissues was positively correlated with the level of copper in feed. High/excess dietary copper (162 mg/kg) up-regulated the expression of stress response related genes, and reduced the expression/activities of anti-oxidation genes/enzymes. The activity of phenoloxidase decreased significantly when dietary copper level was 86-162 mg/kg, and the expression of hemocyanin was up-regulated in crab fed the diets with 28-162 mg/kg copper. Overall, the results of the present study indicated that high dietary copper led to parachrea in carapace and hemolymph of mud crab, and caused copper deposition abnormality in carapace and hepatopancreas. The data suggested that the toxic effects of dietary copper were concentration-dependent such that, excess dietary copper (162 mg/kg) had adverse impacts on oxidation resistance.
DOI Link: 10.1016/j.jhazmat.2020.122600
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript of: Luo J, Zhu T, Wang X, Chen X, Yuan Y, Jin M, Betancor M, Tocher D & Zhou Q (2020) Toxicological mechanism of excessive copper supplementation: Effects on coloration, copper bioaccumulation and oxidation resistance in mud crab Scylla paramamosain. Journal of Hazardous Materials, 395, Art. No.: 122600. DOI: https://doi.org/10.1016/j.jhazmat.2020.122600 © 2020, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

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