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

机译:在微囊藻毒素-LR胁迫下补充日粮虾青素对克氏原螯虾(吉拉德1852年)小龙虾能量收支和生物累积的影响

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摘要

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.
机译:这项研究旨在研究虾青素对小龙虾克氏原螯虾的能量收支和微囊藻-亮氨酸-精氨酸(微囊藻-LR)生物富集的影响(Girard,1852)。将小龙虾(21.13±4.6 g)在微囊藻毒素-LR胁迫(0.025 mg / L)下培养,并在玻璃罐中喂食含虾青素(0、3、6、9和12 mg / g)的饲料8周350毫米×450毫米×150毫米)。在克拉克疟原虫的不同器官中测定了微囊藻毒素-LR的积累。结果表明,虾青素可以显着提高克拉克疟原虫的存活率和比生长率(SGR)(p <0.05)。饮食中的虾青素补充剂似乎在一定程度上阻止了微囊藻毒素-LR在克拉克疟原虫的肝胰腺和卵巢中的生物蓄积(p <0.05)。饲料中虾青素含量为9–12 mg / g是一种实用且经济的选择。

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