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首页> 外文期刊>Marine ecology >Dinoflagellate Cysts in Recent Sediments from Chinese Coastal Waters
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Dinoflagellate Cysts in Recent Sediments from Chinese Coastal Waters

机译：中国沿海水域最近沉积物中的鞭毛囊肿

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摘要

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.
机译：从2000年7月至2002年5月，从10个地点收集了地表沉积物，研究了鞭毛安息囊在中国沿海水域的分布。本次调查共确定了代表14个属的3个阶的61个囊肿形态。中国沿海地区首次记录了十七种囊肿类型。在封闭或半封闭的近岸港口中记录到丰富的囊肿组合。在本次调查中，Trochoidea trochoidea是最主要和最常见的囊肿类型，特别是在大亚湾，大鹏湾和深圳湾的沉积物中。然而，前角质囊肿是最多样化的组，主要分布在长江口，珠江口，Z林湾和南澳岛地区。长江口和珠江口表层2 cm表层沉积物中的囊肿浓度在258至25037囊肿-g〜（-1）干重之间，丰度较低。能够产生麻痹性贝类中毒（PSP）的两种鞭毛鞭毛的囊肿-Alexandrium spp。和裸藻（Gymnodinium catenatum）-几乎在所有位置都被检测到。此外，在大亚湾的表层沉积物中经常观察到椭圆形亚历山大藻和塔玛森囊肿复合物，据报道，那里的PSP毒素和PSP含量高。提供了对新记录的物种，未知物种，有毒物种和优势物种的那些囊肿的详细描述和说明。

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