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首页> 外文会议>Conference on Fish Telemetry >Influence of the light-dark cycle in the diel activity rhythms of sea lamprey's ammocoetes
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Influence of the light-dark cycle in the diel activity rhythms of sea lamprey's ammocoetes

机译：浅暗循环在海参的Diel活性节奏中的影响

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Ten sea lamprey ammocoetes, tagged with passive integrated transponders (PIT), were released in a tank (2 m~3 capacity) and their position monitored twice a day, for a period of one month. Ammocoetes' locomotor activity appeared to be conditioned by circadian rhythms. Differences in the proportion of detected activity versus apparent inactivity resulted mainly from the observations registered during the night. Ammocoetes were more active throughout the night period, particularly in the first and second weeks of trials. After an initial period of enhanced activity, differences between daily activity patterns tended to disappear. During the entire experimental period, ammocoetes spent most of the time stationary. There were no significant differencesfound when comparing the distance moved by the ammocoetes during the dark and light periods, through which they display a similar diel locomotor behaviour. On the other hand, since movements were more frequent at night, the total distance moved by the lampreys is clearly higher during the dark period. This method was found to be a valuable and effective technique to locate and identify individual ammocoetes burrowed up to 10 cm deep in the substrate, with acceptable accuracy and minimum disturbance.
机译：十个海拉彭彭·蒙皮特，用被动集成的转发器（PIT）标记，在坦克（2米〜3容量）中释放，其位置每天监测两次，为期一个月。 Ammocoetes'运动的运动活动似乎是昼夜节律的调理。检测到的活动比例与明显不活动的差异主要来自在夜间注册的观察结果。 Ammocoetes在整个夜晚的过程中更活跃，特别是在试验的第一周和第二周。在增强活动的初始时期之后，日常活动模式之间的差异往往消失。在整个实验期间，Ammocoetes大部分时间都在静止。当比较在黑暗和光周期期间由弹药移动的距离进行比较时没有显着的差异，它们显示了类似的DIEL运动行为。另一方面，由于夜间的运动更频繁，因此在黑暗时期，Lampreys移动的总距离显然较高。发现该方法是定位和识别在基板中深入10厘米的单个Ammocoetes的有价值且有效的技术，具有可接受的精度和最小扰动。

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