Role of temporary cysts in the population dynamics of Alexandrium taylori (Dinophyceae)
Role of temporary cysts in the population dynamics of Alexandrium taylori (Dinophyceae)
复制标题
临时包囊在泰勒亚历山大藻（甲藻纲）种群动态中的作用
DOI：
10.1093/plankt/24.7.681
复制
发表时间：
2002
影响因子：
2.1
通讯作者：
J. Camp
中科院分区：
文献类型：
--
作者：
E. Garcés;M. Masó;J. Camp
虽然暂时的囊肿阶段在甲藻中很常见，但它们的作用仍不清楚。在地中海西北部西班牙的La Fosca海滩上，每年都会形成10 6个细胞l-1的密集斑块，持续2个月（7、8月）。生活史的特征之一是，在生活史上，A. taylori是从营养运动阶段到非运动暂时性包囊的转变。在这里，我们提出了在沉积物中的临时孢囊的丰度和它们的原位包囊和脱囊率的时间变化。从水柱到沉积物的临时包囊的原位包囊率为1.8 × 106 ~ 4.4 × 106包囊m-2d-1，而脱囊率为0.9 × 106 ~ 2。盛花期7 × 10 6个孢囊m-2d-1。沉积物中的一些临时孢囊需要1天以上才能产生营养细胞，并保持活力至少4天。我们建议，在这个物种的临时囊肿的形成是一种工具，以减少人口损失。临时孢囊的产生可能是一个优势，因为部分种群储存在沉积物中。
Although temporary cyst stages are common in dinoflagellates, their role remains unclear. Every year Alexandrium taylori (Dinophyceae) forms dense patches (10 6 cells l -1 ) along La Fosca beach (Spain, northwest Mediterranean), which last for 2 months (July, August). One of the characteristics of the life history of A. taylori is the shift from a vegetative motile stage to non-motile temporary cysts. Here we present the temporal changes in the abundance of temporary cysts in sediments and their in situ encystment and excystment rates. The in situ encystment rate of temporary cysts from the water column to the sediment ranged from 1.8 X 10 6 to 4.4 X 10 6 cysts m -2 day -1, whereas the excystment rate was between 0.9 X 10 6 to 2. 7 X 10 6 cysts m -2 day -1 during the bloom period. Some of the temporary cysts in the sediment took more than 1 day to produce vegetative cells and remained viable for at least 4 days. We propose that temporary cyst formation in this species is a tool for reducing population losses. The production of temporary cysts can be an advantage since part of the population is stored in the sediments.
镜像层次结构
DOI：
--
发表时间：
2009
期刊：
影响因子：
--
作者：
NAKASHIMA;Koji;TAKAGI Akihiko;清水康二;ONJO Akio;清水康二;山崎 孝史;清水康二
通讯作者：
清水康二