Saker M L, Eaglesham G K
Department of Tropical Plant Sciences, James Cook University, Townsville, Australia.
Toxicon. 1999 Jul;37(7):1065-77. doi: 10.1016/s0041-0101(98)00240-2.
Redclaw crayfish, Cherax quadricarinatus harvested from an aquaculture pond infested by a bloom of the cyanobacterium Cylindrospermopsis raciborskii (order: Nostocales), were shown to accumulate the toxic alkaloid cylindrospermopsin. Pond water samples collected during the bloom contained 589 microg l(-1) of the toxin (93% in the cyanobacterial cells, 7% in the water). Crayfish from the pond contained cylindrospermopsin at concentrations of 4.3 microg g freeze dried hepatopancreas tissue and 0.9 microg g freeze dried muscle tissue. Trichomes of C. raciborskii were observed in gut contents of crayfish harvested during the cyanobacterial bloom, indicating that the most likely mechanism for accumulation of the toxin was by ingestion of cyanobacterial cells. Crayfish subjected to an extract of harvested bloom material under laboratory conditions for a period of 14 days were also found to accumulate cylindrospermopsin, indicating that this toxin is also absorbed into the tissues by direct uptake of the toxin in solution.
从受蓝藻卷曲鱼腥藻（念珠藻目）大量繁殖影响的水产养殖池塘中捕捞的红螯螯虾（Cherax quadricarinatus），被证明会积累有毒生物碱柱孢藻毒素。在蓝藻大量繁殖期间采集的池塘水样中含有589微克/升的毒素（93%存在于蓝藻细胞中，7%存在于水中）。来自该池塘的螯虾，其冻干肝胰腺组织中柱孢藻毒素浓度为4.3微克/克，冻干肌肉组织中为0.9微克/克。在蓝藻大量繁殖期间捕捞的螯虾肠道内容物中观察到了卷曲鱼腥藻的藻丝体，这表明毒素积累最可能的机制是通过摄食蓝藻细胞。在实验室条件下，将螯虾置于采集的蓝藻大量繁殖物质的提取物中14天，也发现它们积累了柱孢藻毒素，这表明这种毒素也可通过直接摄取溶液中的毒素而被吸收到组织中。
