Carey Cayelan C, Haney James F, Cottingham Kathryn L
Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA.
Environ Toxicol. 2007 Jun;22(3):337-9. doi: 10.1002/tox.20245.
Gloeotrichia echinulata is a bloom-forming cyanobacterium that is common in eutrophic lakes, and less prevalent but increasing in oligotrophic lakes. We used an enzyme-linked immunosorbent assay analysis to test for the presence of the hepatotoxin microcystin-LR (MC-LR) in G. echinulata collected from an oligotrophic lake in central New Hampshire, USA. We found that G. echinulata contained MC-LR at mean concentrations of 97.07 +/- 7.78 (1 s.e.) ng MC-LR g(-1) dry wt colonies. This suggests that recent outbreaks of G. echinulata in oligotrophic lakes used as water sources throughout New England (USA) may pose a health concern. The toxicity of G. echinulata reported here suggests the need for future monitoring of microcystins in oligotrophic lakes.
棘刺胶鞘藻是一种能形成水华的蓝藻，常见于富营养化湖泊，在贫营养湖泊中虽不常见但呈增多趋势。我们采用酶联免疫吸附测定分析方法，检测了从美国新罕布什尔州中部一个贫营养湖泊采集的棘刺胶鞘藻中是否存在肝毒素微囊藻毒素-LR（MC-LR）。我们发现，棘刺胶鞘藻中MC-LR的平均含量为97.07±7.78（1个标准误）纳克MC-LR/克干重藻体。这表明，近期在美国新英格兰地区用作水源的贫营养湖泊中爆发的棘刺胶鞘藻水华可能会引发健康问题。此处报道的棘刺胶鞘藻的毒性表明，未来有必要对贫营养湖泊中的微囊藻毒素进行监测。
