The effect of armored skin on the swimming of longnose gar, Lepisosteus osseus
The effect of armored skin on the swimming of longnose gar, Lepisosteus osseus
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铠甲皮对石斑鱼游泳的影响
DOI：
10.1139/z92-164
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发表时间：
1992
影响因子：
1.4
通讯作者：
V. L. Mehl
中科院分区：
文献类型：
--
作者：
P. Webb;Douglas Hardy;V. L. Mehl
快速启动和稳定的游泳进行了比较，两种食鱼，长鼻雀鳝（Lepisosteus osseus），它有一个外壳装甲与硬鳞，和无装甲虎麝香（Esox sp。在快速启动和稳定游泳过程中，两个物种的身体都有类似的弯曲。因此，在游泳过程中，雀鳝沉重的体壁并不影响灵活性。在快速启动过程中，在给定的运行时间内，雀麦的行驶距离较低，平均只有麝香鸟的65%。根据肌肉质量的差异，在快速启动时，预计加尔斯将完成麝香犬72%的工作。据估计，较重的珠被的雀鳝贡献约90%的快速启动性能下降。在稳定的游泳中，在给定的速度下，雀鳝和麝香鱼的机械功率需求是相似的。因此，稳定的游泳费用似乎不受装甲的影响。实验结果表明，加尔斯的临界游泳速度为1.9体长/s，而非鳄类的临界游泳速度为3.4体长/s。
Fast-starts and steady swimming were compared for two piscivorous fishes, the longnose gar (Lepisosteus osseus), which has an integument armored with ganoid scales, and the unarmored tiger musky (Esox sp.). The body was similarly flexed by both species during fast-starts and steady swimming. Therefore, the heavy integument of the gar did not affect flexibility during swimming. Distance traveled in a given elapsed time during fast-starts was lower for the gar, which averaged 65% of the work done by the musky. On the basis of differences in muscle mass, gars would be expected to perform 72% of the work of muskies during a fast-start. The heavier integument of the gar was estimated to contribute about 90% to the reduced fast-start performance. In steady swimming, mechanical power requirements at a given speed were similar for both gar and musky. Therefore, steady swimming costs do not appear to be affected by armor. The critical swimming speed of gars was 1.9 body lengths/s compared with 3.4 body lengths/s f...