Dinoflagellate Cysts in Recent Sediments from Chinese Coastal Waters
Dinoflagellate Cysts in Recent Sediments from Chinese Coastal Waters
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DOI：
10.1111/j.1439-0485.2004.00035.x
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发表时间：
2004-12
期刊：
影响因子：
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通讯作者：
Zhaohui Wang;K. Matsuoka;Yu-zao Qi;Jufang Chen
中科院分区：
文献类型：
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作者：
Zhaohui Wang;K. Matsuoka;Yu-zao Qi;Jufang Chen
2000年7月至2002年5月在中国近海沃茨10个地点采集了表层沉积物样品，研究了甲藻休眠孢囊的分布。本次调查共鉴定出3目14属61种孢囊形态类型。在中国沿海首次记录到17种囊型。在封闭或半封闭的近岸港口记录了丰富的包囊组合。锥状斯氏藻是本次调查中最常见的孢囊类型，特别是在大亚湾、大鹏湾和深圳湾的沉积物中。其中原多甲藻孢囊种类最多，主要分布在长江口、珠江口、柘林湾和南尾岛海域。表层2cm沉积物中的孢囊含量在258~25037个·g-1之间，长江口和珠江口的孢囊含量较低。两种能够产生麻痹性贝类毒素（PSP）的甲藻-亚历山大藻的孢囊。和链状裸藻-几乎在所有地点都检测到。此外，椭圆形的链状亚历山大藻（Alexandrum catenella）和A.大亚湾表层沉积物中常见塔玛藻孢囊复合体，其PSP毒素含量较高，并有PSP发生的报道。对新记录种、未定种、有毒种和优势种的孢囊进行了详细描述和图解。
Surface sediments were collected from 10 locations to study the distribution of dinoflagellate resting cysts in Chinese coastal waters from July 2000 to May 2002. Sixty-one cyst morphotypes representing 14 genera of three orders were identified in this survey. Seventeen cyst types were recorded for the first time from Chinese coasts. Rich cyst assemblages were recorded in closed or semi-closed nearshore harbors. Scrippsiella trochoidea was the most dominant and common cyst type in this survey, especially in sediments from Daya Bay, Dapeng Bay and Shenzhen Bay. However, Protoperidinium cysts were the most diversified group, predominating in Changjiang River Estuary, Zhujiang River Estuary, Zhelin bay and the Nanao Island area. Cyst concentrations in the top 2 cm surface sediments varied from 258 to 25,037 cysts.g -1 dry weight sediment, and abundance was lower in Changjiang River Estuary and Zhujiang River Estuary. Cysts of two dinoflagellates capable of producing paralytic shellfish poisoning (PSP) - Alexandrium spp. and Gymnodinium catenatum - were detected almost in all locations. Furthermore, the ellipsoidal Alexandrium catenella and A. tamarense cyst complex was frequently observed in the surface sediment from Daya Bay, where high contents of PSP toxin and PSP episodes have been reported. Detailed descriptions and illustrations are provided of those cysts of newly recorded species, unidentified species, toxic species and dominant species.