Red Tides and Their Environmental Impacts in WESTPAC Area

西太平洋地区赤潮及其环境影响

基本信息

批准号：
06041031
负责人：
FUKUYO Yasuwo
金额：
$ 9.34万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06041031/
关键词：
Red Tide Toxic Plankton Toxic Dinoflagellate Paralytic Shellfish Poisoning Guatemala Indonesia Thailand Malaysia Philippines 東南アジア

项目摘要

Cooperative field surveys on distribution of harmful plankton, fish and shell-fish and occurrence of poisoning were conducted to clarify the blooming and expansion mechanisms of the harmful plankton in Guatemala and Asian countries. In July 1995, a scientific meeting was held with scientists of these countries to develop and standardize technique.At Puerto Quezales of the Pacific coast of Guatemala, a dense bloom of the harmful dinoflagellate, Cochlodinium polykrikoides, was found. Plankton and cyst of the toxic strain of Pyrodnium bahamense were found in the Pacific coast, whereas those of possibly non-toxic strain in the Atlantic coast. They differ in their shape, but physiologically similar in growing slowly in enriched sea-water medium, requiring soil-extract.In eastern Indonesia, P.bahamense was found to make blooms at Kao Bay of Halmahera Island and Ambon Bay of Ambon Island. Resting cysts of the species were detected in both bays. The bays were near to Papua New Guinea, where P.bahamense bloomed for the first time in Asian waters. The finding of the species in the eastern Indonesia is important to clarify spreading route of the species, and continuous survey in wider area is thought to be necessary. In western Indonesia P.bahamense was found in Jakarta Bay and Bangka Island.At shrimp ponds in Indonesia and Thailand, the toxic dinoflagellate, Alexandrium minutum, was found to bloom and kill shrimps. But mechanism of the mass mortality has not been clarified yet.Along Malaysian coast of Malacca Strait, two toxic dinoflagellates, Gymnodinium catenatum and Alexandrium tamiy av anichii bloomed and might cause PSP poisoning occurred in 1993.In Philippijnes P.bahamense recurred for more than ten years with PSP cases of more than 2000 patients including 170 fatal ones. Accumulation of DSP toxin produced by Dinophysis in shellfish was confirmed for the first time in tropical countries.

进行了有关有害浮游，鱼类和壳鱼的分配以及中毒发生的合作现场调查，以阐明危地马拉和亚洲国家有害浮游生物的盛开和扩张机制。 1995年7月，与这些国家的科学家举行了一场科学会议，以开发和标准化技术。在太平洋沿岸发现了浮游生物毒性菌株的浮游生物菌株，而大西洋沿岸可能有无毒菌株的浮雕。它们的形状有所不同，但在生理上在富集的海水培养基中缓慢生长，需要土壤提取。在两个海湾中都检测到该物种的静止囊肿。海湾靠近巴布亚新几内亚，在亚洲水域，P.Bahamense首次开花。在印度尼西亚东部的物种的发现对于澄清物种的扩散途径很重要，并且认为在更广泛地区的连续调查是必要的。在印度尼西亚西部，在雅加达湾和曼卡群岛发现了巴哈明。在印度尼西亚和泰国的虾池塘，有毒的恐龙，Alexandrium Minutum，被发现盛开并杀死虾。但是尚未澄清质量死亡率的机制。马来西亚海峡的马来西亚海岸，两种有毒的鞭毛鞭毛盐，体育馆catenatum和alexandrium tamiy tamiy av anichii盛开，可能导致PSSP中毒发生在1993年。在热带国家，首次证实了通过贝类中的Dinophys产生的DSP毒素的积累。