Behavioral response to tidal replacement of Perinereis aibuhitensis Grube
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摘要: 潮汐更替对潮间带生物的生理和行为影响显著,底内动物可以通过行为过程建立适宜的微环境适应潮间带环境变化。本实验运用行为学观测装置研究了双齿围沙蚕对潮汐更替的行为响应特征。实验设置3个温度梯度(15℃、20℃和25℃)和4个时间段(T1: 退潮前、T2: 退潮后、T3: 涨潮30 min内和T4: 涨潮30 min后),每个处理组设6个重复。结果显示,在同一时间段内,随着温度的升高,双齿围沙蚕的径向起伏频率、径向起伏泵水速率、轴向爬行速度和头尾对调次数呈增大的趋势,头尾对调一次的时间逐渐缩短。同一温度下,双齿围沙蚕在T3时间段内的径向起伏频率、轴向爬行速度、径向起伏泵水速率、径向起伏泵水效率、轴向爬行时间和头尾对调次数均高于其他时间段,头尾对调一次的时间均有短于其他时间段的趋势;T1和T4时间段内的所有运动指标均无显著差异(p>0.05)。20℃时,双齿围沙蚕在T3时间段比T1时间段的径向起伏频率和泵水速率的增幅均高于15℃和25℃时。同一时间段内,双齿围沙蚕径向起伏时间的最大值和轴向爬行时间的最小值均出现在20℃。15℃和20℃时,双齿围沙蚕在T1和T3时间段内的轴向爬行速度均无显著差异(p>0.05)。但是在25℃时,T3时间段内双齿围沙蚕的轴向爬行速度显著高于T1时间段(p<0.05)。结果表明,双齿围沙蚕的运动强度随温度升高而增强,在水温为20℃时,其在沉积物中的运动状态较佳。退潮后双齿围沙蚕轴向爬行运动较为缓慢;刚涨潮时,双齿围沙蚕的运动强度显著增加;涨潮30 min后,双齿围沙蚕的运动逐渐恢复到与退潮前相近的状态。双齿围沙蚕可以通过一系列运动行为应对潮汐更替产生的不利条件。Abstract: Tidal replacement has a significant impact on the physiology and behavior of intertidal organisms. Infauna can establish a suitable microenvironment to adapt to intertidal environment through the behavioral process. In this experiment, the behavioral response of Perinereis aibuhitensis Grube to tidal alternation were studied by behavioral observation device. Three temperature grades (15℃, 20℃ and 25℃) and four time periods (T1: before ebb tide, T2: after ebb tide, T3: within 30 minutes after rising tide and T4: 30 minutes after rising tide) were set up for the experiment, with six replications for each experimental group. The results showed that at the same time period, the radial undulation frequency, radial undulation pumping rate, axial crawling velocity and the frequency of head-tail exchange of P. aibuhitensis Grube tended to increase with the increase of temperature, while the time of head-tail exchange tended to decrease. At the same temperature, the radial undulation frequency, axial crawling velocity, radial undulation pumping rate, radial undulation pumping efficiency, axial crawling time and the frequency of head-tail exchange of P. aibuhitensis Grube in T3 were higher than those of other time periods, while the time of one head-tail exchange was lower. There was no significant difference in all behavioral indexes between T1 and T4 (p>0.05). At 20℃, the radial undulation frequency and pumping rate of P. aibuhitensis Grube in T3 were higher than T1. At the same time period, the radial undulation time and axial crawling time of P. aibuhitensis Grube were at the maximum and minimum at 20℃, respectively. There was no significant difference in axial crawling velocity of P. aibuhitensis Grube at 15℃ and 20℃ in T1 and T3. However, at 25℃, the axial crawling velocity in T3 was significantly higher than T1 (p<0.05). The results indicate that the motion intensity of P. aibuhitensis Grube increased with the increase of temperature. The motion state of P. aibuhitensis Grube was better at 20℃. After ebb tide, it is an important time for P. aibuhitensis Grube to forage for sediment, and its axial crawling motion is relatively slow. At the beginning of the rising tide, the motion intensity of P. aibuhitensis Grube increased significantly. 30 minutes after the rising tide, the motion of P. aibuhitensis Grube gradually returns to a state similar to that before the ebb tide. P. aibuhitensis Grube can deal with the adverse effects of tidal replacement through a series of behaviors.
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Key words:
- infauna /
- polychaete /
- behavior /
- tidal replacement /
- bioturbation
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图 1 温度和时间段对双齿围沙蚕径向起伏频率的影响
图中不同字母代表同一时间段不同温度间差异显著(p<0.05);*代表同一温度不同时间段间存在显著差异(p<0.05);T1、T3和T4分别代表退潮前、涨潮30 min内和涨潮30 min后3个时间段;误差棒的长度代表标准误差(SE)的大小
Fig. 1 The influence of temperature and time periods on the radial undulating frequency of Perinereis aibuhitensis Grube
Data with different letters are significantly different among different temperature at the same time period (p<0.05); data with * are significantly different among different time periods at the same temperature (p<0.05); T1, T3 and T4 represent before ebb tide, within 30 min after rising tide and 30 min after rising tide respectively; error bars represent 1 SE
图 2 温度和时间段对双齿围沙蚕轴向爬行速度的影响
图中不同字母代表同一时间段不同温度间差异显著(p<0.05);*代表同一温度不同时间段间存在显著差异(p<0.05);T1、T2、T3和T4分别代表退潮前、退潮后、涨潮30 min内和涨潮30 min后4个时间段;误差棒的长度代表标准误差(SE)的大小
Fig. 2 The influence of temperature and time periods on the axial crawling velocity of Perinereis aibuhitensis Grube
Data with different letters are significantly different among different temperature at the same time period (p<0.05); data with * are significantly different among different time periods at the same temperature (p<0.05); T1, T2, T3 and T4 represent before ebb tide, after ebb tide, within 30 min after rising tide and 30 min after rising tide respectively; error bars represent 1 SE
图 3 温度和时间段对双齿围沙蚕径向起伏泵水速率的影响
图中不同字母代表同一时间段不同温度间差异显著(p<0.05);T1、T3和T4分别代表退潮前、涨潮30 min内和涨潮30 min后3个时间段;误差棒的长度代表标准误差(SE)的大小
Fig. 3 The influence of temperature and time periods on the pumping rate of radial undulating motion of Perinereis aibuhitensis Grube
Data with different letters are significantly different among different temperature at the same time period (p<0.05); T1, T3 and T4 represent before ebb tide, within 30 min after rising tide and 30 min after rising tide respectively; error bars represent 1 SE
图 4 温度和时间段对双齿围沙蚕头尾对调一次时间的影响
图中不同字母代表同一时间段不同温度间差异显著(p<0.05);*代表同一温度不同时间段间存在显著差异(p<0.05);T1、T2、T3和T4分别代表退潮前、退潮后、涨潮30 min内和涨潮30 min后4个时间段;误差棒的长度代表标准误差(SE)的大小
Fig. 4 The influence of temperature and time periods on the time of head-tail exchange of Perinereis aibuhitensis Grube
Data with different letters are significantly different among different temperature at the same time period (p<0.05); data with * are significantly different among different time periods at the same temperature (p<0.05); T1, T2, T3 and T4 represent before ebb tide, after ebb tide, within 30 min after rising tide and 30 min after rising tide respectively; error bars represent 1 SE
表 1 温度和时间段对双齿围沙蚕径向起伏泵水效率(单位:mL/pulse)的影响
Tab. 1 The influence of temperature and time periods on the pumping efficiency (unit: mL/pulse) of radial undulating motion of Perinereis aibuhitensis Grube
温度/℃ 时间段 T1 T3 T4 15 0.17±0b 0.19±0.01c 0.17±0.02a 20 0.21±0.01a 0.23±0a 0.21±0a 25 0.21±0a 0.21±0b 0.20±0.01a 注:表中不同字母代表同一时间段不同温度间差异显著(p<0.05);T1、T3和T4分别代表退潮前、涨潮30 min内和涨潮30 min后3个时间段。 表 2 温度和时间段对双齿围沙蚕头尾对调次数的影响
Tab. 2 The influence of temperature and time periods on the frequency of head-tail exchange of Perinereis aibuhitensis Grube
温度/℃ 时间段 T1 T2 T3 T4 15 0.43±0.13b 0.17±0.07b 1.14±0.26a 0.14±0.09b 20 0.92±0.20b 0.17±0.04b 1.00±0.37a 0.42±0.15ab 25 1.92±0.30a 0.50±0.11a 1.17±0.31a 1.17±0.33a 注:表中不同字母代表同一时间段不同温度间差异显著(p<0.05);T1、T2、T3和T4分别代表退潮前、退潮后、涨潮30 min内和涨潮30 min后4个时间段。 表 3 温度和时间段对双齿围沙蚕运动时间(单位:min)的影响
Tab. 3 The influence of temperature and time periods on motion time (unit: min) of Perinereis aibuhitensis Grube
运动类型 温度/℃ 时间段 T1 T2 T3 T4 径向起伏 15 13.79±1.68b − 13.00±2.23b 14.49±2.05a 20 25.01±1.22a − 22.92±0.71a 21.66±2.19a 25 20.12±3.60ab − 19.08±1.24a 17.51±1.60a 轴向爬行 15 11.80±1.96ab 10.64±1.03a 21.44±2.23a 12.07±0.80a 20 6.83±0.73b 3.67±0.46b 15.36±1.86a 12.21±1.85a 25 14.09±0.46a 9.50±2.00a 17.84±2.20a 15.83±0.39a 注:表中不同字母代表同一时间段不同温度间差异显著(p<0.05);T1、T2、T3和T4分别代表退潮前、退潮后、涨潮30 min内和涨潮30 min后4个时间段;在干露状态时(T2),双齿围沙蚕无径向起伏运动,因此−代表无数据。 -
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