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Toxins 2018, 10(7), 277; https://doi.org/10.3390/toxins10070277

Effects of Dietary Astaxanthin Supplementation on Energy Budget and Bioaccumulation in Procambarus clarkii (Girard, 1852) Crayfish under Microcystin-LR Stress

College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
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Received: 7 May 2018 / Revised: 19 June 2018 / Accepted: 21 June 2018 / Published: 4 July 2018
(This article belongs to the Special Issue Cyanobacteria and Cyanotoxins: New Advances and Future Challenges)
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Abstract

This research aimed to study the effects of astaxanthin on energy budget and bioaccumulation of microcystin-leucine-arginine (microcystin-LR) in the crayfish Procambarus clarkii (Girard, 1852). The crayfish (21.13 ± 4.6 g) were cultured under microcystin-LR stress (0.025 mg/L) and were fed with fodders containing astaxanthin (0, 3, 6, 9, and 12 mg/g) for 8 weeks in glass tanks (350 mm × 450 mm × 150 mm). Accumulations of microcystin-LR were measured in different organs of P. clarkii. The results suggested that astaxanthin can significantly improve the survival rate and specific growth rate (SGR) of P. clarkii (p < 0.05). The dietary astaxanthin supplement seems to block the bioaccumulation of microcystin-LR in the hepatopancreas and ovaries of P. clarkii to some extent (p < 0.05). Astaxanthin content of 9–12 mg/g in fodder can be a practical and economic choice. View Full-Text
Keywords: microcystin-LR; Procambarus clarkii; energy budget; astaxanthin microcystin-LR; Procambarus clarkii; energy budget; astaxanthin
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An, Z.; Zhang, Y.; Sun, L. Effects of Dietary Astaxanthin Supplementation on Energy Budget and Bioaccumulation in Procambarus clarkii (Girard, 1852) Crayfish under Microcystin-LR Stress. Toxins 2018, 10, 277.

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