Study on the mechanisms of blooming and geographical expansion of toxic dinoflagellates in Southeast Asian waters

东南亚海域有毒甲藻爆发和地理扩张机制研究

• 批准号: 15380132
• 负责人: FUKUYO Yasuwo
• 金额: $ 10.05万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15380132/
• 关键词: toxic dinoflagellate; Southeast Asia; distribution expansion; dinoflagellate; red tide; toxic red tide; paralytic shellfish toxin; amnesic shellfish toxin; シスト; 表層堆積物

Various research results were obtained through the establishment of a network with scientists of Southeast Asian countries such the Philippines and Vietnam.1. Expansion of blooming area of red tide speciesRed tide causative species in Southeast Asia are Noctiluca scintillans and Pyrodinium bahamense, which is known as PSP toxin producer too. In addition to them Ceratium furca, Prorocentrum minimum and Cochlodinium polykrikoides became common widely. Mass mortality of wild and culture fish occurred due to their blooming. Phylogentical analysis showed that these newly bloomed species have same characters as those occurring in temperate area. Differentiation of red tide by a toxic species from those by a harmful species to aquatic resources, but not to people, became important for management of seafood sustainability.2. Microalgae causing toxin contamination in fish and shellfishIn addition to Pyrodinium bahamense that bloomed widely, several species such as Gymnodinium catenatum and Alex … More andrium minutum have been detected as paralytic shellfish toxin producers recently at various locations. Toxin contamination and poisoning are found at the same area and time of the blooming of these newly found species. Several species of Dinophysis, known as diarrhetic shellfish toxin producer, such as D. caudata are found also in Southeast Asian waters, but their toxin productivity could not be confirmed. Nitzschia navis-varingica, amnesic shellfish toxin producer, collected in Vietnamese and Philippine coast waters, were analyzed on their toxin productivity, and most of them showed positive results. In the preliminary survey distribution of the species was found quite wide in Asian waters.3. Future research directionELISA kits for detection of various types of toxins have been developed and invented recently. Using the kits it became possible for one scientist to analyze biological and chemical property of certain organism simultaneously. This situation makes detection of toxin producer much easier. Less

通过与菲律宾和越南等东南亚国家的科学家建立网络，取得了各种研究成果。赤潮生物分布范围扩大在东南亚的赤潮生物主要有夜光藻和巴哈马甲藻，后者也被认为是PSP毒素的生产者。除此之外，叉角藻、微小原甲藻和多克里似钴甲藻也普遍存在。野生和养殖鱼类由于开花而大量死亡。系统发育分析表明，这些新开花的种与温带地区的种具有相同的特征。区分赤潮的有毒种类和有害种类对水产资源的危害，而不是对人类的危害，成为海产品可持续管理的重要内容.导致鱼类和贝类毒素污染的微藻除了广泛开花的巴哈马甲藻外， ...更多信息 最近在多个地方发现微小的珊瑚虫是麻痹性贝类毒素产生者。毒素污染和中毒是在这些新发现的物种开花的同一地区和时间发现的。甲藻属中的几种甲藻是产贝类毒素的重要生物，如甲藻D.在东南亚沃茨中也发现有尾鱼，但其毒素生产能力无法得到证实。对采自越南和菲律宾沿海沃茨的遗忘性贝类毒素产生菌Nitzschia navis-varingica进行了产毒力测定，多数菌株产毒力为阳性。在初步调查中发现该物种在亚洲水域的分布相当广泛。未来的研究方向ELISA试剂盒用于检测各种类型的毒素已开发和发明最近。使用这些试剂盒，一位科学家可以同时分析某些生物体的生物学和化学特性。这种情况使得检测毒素生产者容易得多。少

项目成果

Recent Advances in Marine Biotechnology

海洋生物技术的最新进展

• 发表时间: 2003
• 期刊: Science Publishers Inc.
• 作者: Shigeru Sato;Masaaki Kodama
• 通讯作者: Masaaki Kodama

Manual on Harmful Marine Microalgae

• 发表时间: 2003
• 作者: G. Hallegraeff;D. Anderson;A. Cembella

Redescription of Cryptomonas lima, collected from Sorrento, Italy, the basionym of Prorocentrum lima

• 发表时间: 2005-08
• 期刊: Plankton biology and ecology
• 作者: Y. Nagahama;Y. Fukuyo

Cellular and body scale structure of Heterocapsa ovata sp. nov. and Heterocapsa orientalis sp. nov. (Peridiniales, Dinophyceae)

• DOI: 10.2216/i0031-8884-42-6-629.1
• 发表时间: 2003-11
• 期刊: Phycologia
• 影响因子: 1.6
• 作者: M. Iwataki;Lizeth Botes;T. Sawaguchi;K. Sekiguchi;Y. Fukuyo

Assemblage and geographical distribution of dinoflagellate cysts in surface sediments of coastal waters of Sabah, Malaysia

• 发表时间: 2006-04
• 期刊: Coastal marine science
• 作者: Elsa Furio;K. Matsuoka;Koichiro Mizushima;Iris U. Baula;K. Chan;Ainah Puyong;Dusit Srivilai;B. R. S