Choi Inho, Shim Jae Han, Ricklefs Robert E
Department of Life Science, College of Liberal Art and Science, Yonsei University, Wonju, Gangwon-do 222-710, Korea.
J Exp Zool A Comp Exp Biol. 2003 Oct 1;299(2):99-102. doi: 10.1002/jez.a.10293.
Locomotory speed correlates with muscle mass (determining force and stride rate), limb length (stride rate and distance), and laterally compressed body trunk (force and stride distance). To delineate generalization of the locomotory-morphometric relationships specifically in anuran amphibians, we investigated take-off speed and the three morphological variables from seven species, Rana nigromaculata, R. rugosa, and Bombina orientalis, Eleuthrodectilus fitzingeri, E. diastema, Bufo typhonius, Colostethus flotator and Physalaemus pustulosus. The fastest jumper E. fitzingeri (3.41 m s(-1)) showed 2.49-fold greater speed than the slowest B. typhonius. Take-off speed correlated well with both thigh muscle mass relative to body mass and hindlimb length relative to snout-vent length (HL/SVL), but poorly correlated with the inter-ilial width relative to SVL. The best morphological predictor was HL/SVL (speed=-3.28+3.916 HL/SVL, r=0.968, P<0.0001), suggesting that anuran take-off speed is portrayed well with high gear and acceleration distance characterized by hindlimbs.
运动速度与肌肉质量（决定力量和步频）、肢体长度（步频和步幅）以及侧向压缩的躯干（力量和步幅距离）相关。为了具体描述无尾两栖动物运动形态关系的普遍性，我们研究了黑斑侧褶蛙、虎纹蛙、东方铃蟾、费氏姬蛙、宽隙姬蛙、大蟾蜍、浮蛙和饰纹姬蛙这七个物种的起跳速度和三个形态变量。最快的跳跃者费氏姬蛙（3.41米/秒）的速度比最慢的大蟾蜍快2.49倍。起跳速度与相对于体重的大腿肌肉质量以及相对于吻肛长度（HL/SVL）的后肢长度均显著相关，但与相对于SVL的髂间宽度相关性较差。最佳的形态预测指标是HL/SVL（速度 = -3.28 + 3.916 HL/SVL，r = 0.968，P < 0.0001），这表明无尾两栖动物的起跳速度可以通过以高挡位和以后肢为特征的加速距离很好地描绘出来。
