Laboratory models of diel vertical migration in the dinoflagellate Ceratium hirundinella
Laboratory models of diel vertical migration in the dinoflagellate Ceratium hirundinella
复制标题
甲藻昼夜垂直迁移的实验室模型
DOI：
10.1111/j.1365-2427.1980.tb01190.x
复制
发表时间：
1980
影响因子：
2.7
通讯作者：
T. I. Furnass
中科院分区：
文献类型：
--
作者：
S. Heaney;T. I. Furnass
摘要在1.63 × 0.15 m的实验室试管中，在光暗循环条件下，诱导了一种甲藻Ceratiumhirundinella的昼夜垂直迁移。在生长的指数期和稳定期，不同培养物之间垂直迁移的时间不同;后者与光照条件表现出更大的一致性。
细胞向表层的迁移发生在较低的表面辐照度值（1300 μE m−2 s−1），有一个显着的避免表面沃茨，并在与相对辐照度水平为10%或c相关的深度发现种群最大值。150 μE m−2 s−1）。热分层限制向下移动的细胞进入较冷的层。高表面辐照度和热分层的组合导致大，稳定，次表面的角藻的最大值，类似于在自然沃茨中观察到的环境条件下。
SUMMARY. Diel vertical migrations of a dinoflagellate, Ceratium hirundinella, were induced in a laboratory tube (1.63 × 0.15 m) under a light-dark cycle. The timing of vertical migrations differed between cultures in the exponential and stationary phases of growth; the latter showed a greater coincidence with the light regime.
Migration of cells into the surface layers occurred at low values of surface irradiance ( 1300 μE m−2 s−1) there was a marked avoidance of surface waters, and population maxima were found at depths associated with a relative irradiance level of 10% or c. 150 μE m−2 s−1). Thermal stratification restricted downward movement of cells into the cooler layers. The combination of high surface irradiance and thermal stratification resulted in large, stable, sub-surface maxima of Ceratium, similar to those observed in natural waters under comparable environmental conditions.