Venslauskas Mindaugas S, Asmantas Sarunas
Biophysical Research Group, Vytautas Magnus University (VMU), Donelaicio 58, Kaunas 3000, Lithuania.
Chaos. 2003 Jun;13(2):552-7. doi: 10.1063/1.1574631.
Irregular oscillations in a colony of marine hydroids Podocoryne carnea were investigated. Quantitative characteristics were obtained as a result of long term (10-12 h) monitoring of oscillations at arbitrary sites. The sliding window spectra as well as the pulse-to-pulse dynamics argue the transient chaotic behavior of hydroid colony. The significant change of amplitudes and frequencies in intact colony oscillations after feeding and long sustained oscillations of stolons separated from colony suggest that the irregular activity could be determined by the network of pacemakers residing in stolon wall cells. These are influenced mechanically by the amount of digesting food and/or by chemical action of nutrients inside the stolon lumen. The possible correlation of these oscillations which can evoke Ca(2+) waves in stolon wall cells is discussed.
对海洋水螅虫群落Podocoryne carnea中的不规则振荡进行了研究。通过对任意位置的振荡进行长期（10 - 12小时）监测，获得了定量特征。滑动窗口频谱以及逐脉冲动力学表明水螅虫群落存在瞬态混沌行为。喂食后完整群落振荡中振幅和频率的显著变化，以及与群落分离的匍匐茎的长时间持续振荡表明，不规则活动可能由匍匐茎壁细胞中的起搏器网络决定。这些受到消化食物量的机械影响和/或匍匐茎腔内营养物质的化学作用影响。讨论了这些振荡可能引发匍匐茎壁细胞中Ca(2+)波的相关性。
