Abstract

The dependence of the growth and functioning of the transport system of colonial organisms on water temperature has been studied. Time-lapse microvideo recording was used to measure the coenosarc pulsations of the stolon and shoot in the colonial hydroid Dynamena pumila (L., 1758) reared in seawater at 10, 15, 20, 25, and 28°C. As a result, it was possible to determine that microvideo recording of coenosarc pulsations made it possible to track the colony reaction to temperature change for 2 h. The reaction of growth pulsations, lateral pulsations, and hydroplasmtic flows to the changes in the water temperature turned out to be nonlinear. The reaction of the stolon to the changes in the water temperature was more pronounced than those in the shoot. The optimal temperature range was 10–20°C, which displayed the highest growth rate, the most intensive hydroplasm movements, and the largest volume of transferred hydroplasm. At 28°C, the pulsations of the stolon coenosarc became unstable, the growth tended to slow, and the hydroplasm movements were less active. Consequently, according to the results of analysis of coenosarc pulsations, the upper temperature limit of normal life activity for D. pumila colonies inhabiting the White Sea was 25–28°C.

中文翻译：

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温度对殖民地水DyDynamena pumila生长，共生脉动和水质运动的影响（L.，1758）

摘要

研究了结肠生物的生长和运输系统的功能对水温的依赖性。延时微视频录制用于测量sto虫的结肠异动脉动，并在结肠积水Dynamena pumila中射击（L.，1758）在10、15、20、25和28°C的海水中饲养。结果，可以确定通过微影记录的共鼻脉动可以跟踪菌落对温度变化的反应2小时。生长脉动，侧向脉动和水质流对水温变化的反应被证明是非线性的。茎对水温变化的反应比枝条中的反应更明显。最佳温度范围是10–20°C，显示出最高的生长速率，最密集的水质运动和最大量的转移水质。在28°C时，sto茎腔的脉动变得不稳定，生长趋于减慢，水质运动不太活跃。所以，居住在白海中的D. pumila殖民地为25–28°C。