Pearson T, Hyde D, Bowler K
Department of Biological Sciences, University of Durham, Durham DH1 3LE, United Kingdom.
Am J Physiol. 1999 Jul;277(1):R24-30. doi: 10.1152/ajpregu.1999.277.1.R24.
The control of the attainment of acclimation in Cancer pagurus has been studied. Homologous (8 or 22 degrees C) and heterologous acclimation [central nervous system (CNS) and periphery of crabs simultaneously held at 8 or 22 degrees C] were used. The dependence of electrophysiological parameters of dactylopodite closer muscles of walking legs on nerve stimulation was determined between 6 and 26 degrees C. Muscle resting potential (RP) hyperpolarized linearly with increasing measurement temperatures and showed a 69% compensation between 8 and 22 degrees C on homologous acclimation. With the CNS temperature constant at 8 degrees C, the leg muscle RP showed a 72% compensation on heterologous acclimation to 8 and 22 degrees C; when CNS temperature was constant at 22 degrees C, leg muscle RP showed a 48% compensation on heterologous acclimation to 8 and 22 degrees C. In homologous acclimation, the shape of the excitatory junction potential vs. temperature relationship was characteristic of acclimation temperature. In heterologous acclimation, the shape of this plot was related to the temperature experienced by the leg and not by the CNS. Thus acclimation was principally dependent on local tissue temperature and was relatively independent of CNS or hormonal influences.
对黄道蟹适应过程的控制进行了研究。采用了同源（8或22摄氏度）和异源适应[蟹的中枢神经系统（CNS）和外周同时保持在8或22摄氏度]。在6至26摄氏度之间测定了步足指节闭肌的电生理参数对神经刺激的依赖性。肌肉静息电位（RP）随测量温度升高呈线性超极化，在同源适应中，8至22摄氏度之间显示出69%的补偿。当中枢神经系统温度恒定在8摄氏度时，腿部肌肉RP在异源适应至8和22摄氏度时显示出72%的补偿；当中枢神经系统温度恒定在22摄氏度时，腿部肌肉RP在异源适应至8和22摄氏度时显示出48%的补偿。在同源适应中，兴奋性接头电位与温度关系的形状具有适应温度的特征。在异源适应中，该图的形状与腿部所经历的温度有关，而与中枢神经系统无关。因此，适应主要取决于局部组织温度，相对独立于中枢神经系统或激素影响。
