Muthukumaravel S, Padmanabhan V, Boopathidoss P S, Sadanandane C, Srinivasan R, Gunasekaran K, Sabesan S, Balaraman K
Vector Control Research Centre, Medical Complex, Indira Nagar, Pondicherry - 605 006, India.
J Commun Dis. 2010 Jun;42(2):135-8.
This documentation explores the facts about the invasion of marine cyanobacteria in to the tsunami affected coastal villages of Nagapattinam district of Tamilnadu and Karaikkal district of Pondicherry Union Territory (UT) in southern India. Water samples were collected from eight tsunami-hit coastal villages in different open water sources. The collected samples were processed for detecting marine cyanobacterial growth. Totally 110 water samples were processed, three samples were positive for the toxic cyanobacteria, Lyngbya sp., and nine for nontoxic species such as Epithemia sp.,, Johannesbaptistia pellucida, Oscillatoria princeps, Phormidium fragile, Synechocystis sp. Besides posing a public health risk because of the toxic cyanobacteria, the bloom formation by the cyanobacterial species such as Anabaena, Microcystis, Lyngbya, Plectonema, Phormidium contaminated the water bodies and deteriorated the water quality in the tsunami affected villages. The study revealed that another kind of public health risk from the invasion of toxic cyanobacteria to the costal ecosystem during the tsunami. It is necessary, in this context, that the surveillance mechanism, which is geared up during or after natural disasters, should have a provision to monitor the transportation of toxic elements/organisms from marine system to coastal/inland ecosystems and to control such organisms.
本文件探讨了海洋蓝藻入侵印度南部泰米尔纳德邦纳加帕蒂南地区和本地治里联邦属地（UT）卡拉伊卡尔地区受海啸影响的沿海村庄的相关情况。从八个遭受海啸袭击的沿海村庄的不同开放水源采集了水样。对采集的样本进行处理以检测海洋蓝藻的生长情况。共处理了110个水样，其中三个水样检测出有毒蓝藻——林氏藻属呈阳性，九个水样检测出无毒物种，如硅藻属、透明约翰氏藻、美丽颤藻、脆弱席藻、聚球藻属。除了有毒蓝藻带来公共健康风险外，诸如鱼腥藻、微囊藻、林氏藻、鞘丝藻、席藻等蓝藻物种形成的水华污染了水体，恶化了海啸受灾村庄的水质。该研究揭示了海啸期间有毒蓝藻入侵沿海生态系统带来的另一种公共健康风险。在此背景下，自然灾害期间或之后启动的监测机制有必要具备监测有毒元素/生物从海洋系统向沿海/内陆生态系统转移并控制此类生物的功能。
