Distribution and abundance of resting cysts of the toxic Alexandrium spp.(Dinophyceae) in sediments of the western Seto Inland Sea, Japan.
Distribution and abundance of resting cysts of the toxic Alexandrium spp.(Dinophyceae) in sediments of the western Seto Inland Sea, Japan.
复制标题
日本濑户内海西部沉积物中有毒亚历山大藻（甲藻纲）休眠孢囊的分布和丰度。
DOI：
10.1046/j.1444-2906.2002.00526.x
复制
发表时间：
2002
影响因子：
1.9
通讯作者：
Yuichi Kotani
中科院分区：
文献类型：
--
作者：
M. Yamaguchi;S. Itakura;Keizo Nagasaki;Yuichi Kotani
:
从濑户内海西部（伊予纳达、所纳达、别府湾、德山湾、广岛湾、阿基纳达、Hiuchi纳达和Bingo纳达）的135个站位采集沉积物样品，以确定亚历山大藻休眠孢囊的水平分布和丰度。（A. tamarense + A. catenella）。采用报春花素染色直接计数法对囊肿进行计数。亚历山大藻孢囊在伊予纳达、所纳达和别府湾很少发现，而在德山湾、广岛湾、阿基纳达、日内纳达和宾戈纳达广泛分布。Iyo Nada、Suo Nada、别府湾、Tokuyama湾、广岛湾、阿基Nada、Hiuchi Nada和Bingo Nada的孢囊浓度范围分别为未检出（ND）~14、ND~17、ND~4、93~8137、8~4454、ND~6、ND~18和4-29孢囊/cm 3湿沉积物。大部分的囊肿发生在德山湾和广岛湾，其中较高的密度观察到在海湾内和沿着海岸边缘。在泥质含量较高的站点观察到相对较高的孢囊浓度。Alexandrum spp.除德山湾和广岛湾外，濑户内海西部的囊蚴数量均低于濑户内海东部。然而，由于已观察到亚历山大藻的零星水华，有必要继续监测，以防止该地区爆发麻痹性贝类中毒。
:
Sediment samples were collected from 135 stations in the western part of the Seto Inland Sea (Iyo Nada, Suo Nada, Beppu Bay, Tokuyama Bay, Hiroshima Bay, Aki Nada, Hiuchi Nada and Bingo Nada) to determine the horizontal distribution and abundance of resting cysts of Alexandrium spp. (A. tamarense + A. catenella). Enumeration of the cysts was performed using the primuline-staining direct count method. Cysts of Alexandrium spp. were rarely found in Iyo Nada, Suo Nada and Beppu Bay, but were widely distributed in Tokuyama Bay, Hiroshima Bay, Aki Nada, Hiuchi Nada and Bingo Nada. Cyst concentrations ranged from not detected (ND) to 14, ND to 17, ND to 4, 93 to 8137, 8 to 4454, ND to 6, ND to 18 and 4–29 cysts/cm3 wet sediment in Iyo Nada, Suo Nada, Beppu Bay, Tokuyama Bay, Hiroshima Bay, Aki Nada, Hiuchi Nada and Bingo Nada, respectively. The majority of cysts occurred in Tokuyama Bay and Hiroshima Bay, where higher densities were observed in the inner bay and along the coastal margin. Relatively higher cyst concentrations were observed at stations with a higher mud content. The abundance of Alexandrium spp. cysts in western Seto Inland Sea is lower than in the eastern Seto Inland Sea, except for Tokuyama Bay and Hiroshima Bay. However, because sporadic blooms of Alexandrium have been observed, continuing monitoring is necessary to prevent paralytic shellfish poisoning outbreaks in this area.