Swimming kinematics of fast starts are altered by temperature acclimation in the marine fish Myoxocephalus scorpius
Swimming kinematics of fast starts are altered by temperature acclimation in the marine fish Myoxocephalus scorpius
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海鱼天蝎座Myoxocephalus scorpius的温度适应改变了快速启动的游泳运动学
DOI：
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发表时间：
1995
影响因子：
2.8
通讯作者：
I. Johnston
中科院分区：
文献类型：
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作者：
T. A. Beddow;J. L. Leeuwen;I. Johnston
研究了在5°C或15°C环境下（12 h:12 h光照：12 h黑暗）驯化6-8周的短角虾（Myoxocephalus scorpius L.）捕获猎物的游泳运动学。适应5°C环境的鱼类在12小时内温度急剧上升至15°C后仍对进食感兴趣。猎物捕获是一种刻板的行为，包括跟踪和静止阶段，随后是s型快速启动（阶段1），推进式划水（阶段2）和不同时间的滑行，在此期间嘴巴张开并突出以吸入猎物（阶段3）。在15°C （48.8 ms）条件下，预备冲程（半尾拍，第1阶段）的持续时间明显短于在5°C条件下的5°C (108.3 ms) （Q10=2.2）。对于适应5℃的鱼，在5℃时，鱼沿路径的加速度和速度最大值分别为16.2 m s-2和0.8 m s-1。这两个变量相对独立于急性温度变化（Q10= 1.1-1.2; P < 0.1）。在15°C时，15°C驯化的鱼的最大速度比5°C驯化的鱼高33%，推进行程的尾拍持续时间比5°C驯化的鱼短37%。在15°C条件下，与在15°C条件下驯化的5°C条件下的雕刻相比，15°C条件下的跨步长度和尾拍幅度都显著更高（分别为28%和23%）。结果表明，热驯化后快速启动的主要运动变量具有可塑性，足以将猎物捕获过程中的攻击成功率从23.2%提高到73.4%。
The swimming kinematics of prey capture was studied in short-horned sculpin (Myoxocephalus scorpius L.) acclimated for 68 weeks to either 5 °C or 15 °C (12 h:12 h light:dark) using 15 °C-acclimated shrimps as prey. Fish acclimated to 5 °C remained interested in feeding following an acute rise in temperature to 15 °C over 12 h. Prey capture was a stereotyped behaviour consisting of stalking and stationary phases, followed by an S-shaped fast-start (stage 1), a propulsive stroke (stage 2) and a glide of variable duration during which the mouth was expanded and protruded to suck in the prey (stage 3). The duration of the preparatory stroke (half tail-beat, stage 1) was significantly shorter at 15 °C (48.8 ms) than at 5 °C (108.3 ms) in the 5 °C-acclimated sculpin (Q10=2.2). For 5 °C-acclimated fish, at 5 °C, the maximum values for acceleration and velocity along the path travelled by the fish were 16.2 m s-2 and 0.8 m s-1 respectively. Both variables were relatively independent of acute temperature change (Q10=1.11.2; P>0.1). At 15 °C, the maximum velocity was 33 % higher and the tail-beat duration of the propulsive stroke was 37 % shorter in 15 °C-acclimated than in 5 °C-acclimated fish. Both stride length and tail-beat amplitude were significantly higher (28 and 23 % respectively) in 15 °C- compared with 5 °C-acclimated sculpin at 15 °C. The results demonstrate plasticity in the major kinematic variables of fast-starts following warm acclimation sufficient to increase the percentage of successful attacks during prey capture from 23.2 to 73.4 %.