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Measurement of activity for sit-and-wait predator, red-spotted grouper, using acoustic acceleration transmitter

机译:使用声加速度变送器测量静坐的捕食者,红斑石斑鱼的活动

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摘要

Activity of sit-and-wait predator, red-spotted groupers (Epinephelus akaara) was measured using acoustic acceleration transmitters, AccelTag (Thelma Biotel, Trondheim, Norway). Nine red-spotted groupers tagged with the transmitters were released into a fish tank. The transmitter signal intervals derived from acceleration measured were recorded on acoustic receiver for I hour for each individual. At the same time, the fish behaviors were recorded using video cameras. The tail beat frequency of the tagged fish was counted as indicator of fish activity. We compared transmitter signal intervals and tail beat frequency. Our results showed that signal intervals distinguished whether red-spotted groupers moved their tail fin or not, suggesting that acoustic acceleration transmitter could detect the activity of red-spotted groupers. Acoustic telemetry with acceleration transmitter will be useful to apply to other sit-and-wait type predators to understand their movement patterns and activity rhythms.
机译:使用声加速发射器AccelTag(Thelma Biotel,特隆赫姆,挪威)测量了静坐的捕食者,红斑石斑鱼(红斑石斑鱼)的活动。标记有发射器的九个红斑石斑鱼被释放到鱼缸中。对于每个人,从测得的加速度得出的发射器信号间隔在声学接收器上记录了1小时。同时,使用摄像机记录了鱼类的行为。标记鱼的尾巴拍打频率被视为鱼活动的指标。我们比较了发射机信号间隔和尾拍频率。我们的结果表明,信号间隔区分了红斑石斑鱼是否移动了尾鳍,这表明声加速度变送器可以检测到红斑石斑鱼的活动。带有加速度变送器的声遥测技术将有助于应用于其他静坐型掠食者,以了解它们的运动模式和活动节奏。

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