Morphological basis of kinematic diversity in feeding sunfishes
Morphological basis of kinematic diversity in feeding sunfishes
复制标题
翻车鱼摄食运动多样性的形态学基础
DOI：
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发表时间：
1999
影响因子：
2.8
通讯作者：
Samantha S. Shaw
中科院分区：
文献类型：
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作者：
Peter C. Wainwright;Samantha S. Shaw
探讨了三种中央鱼类下颌杠杆缩放的捕食捕获运动学的物种之间的差异的影响。我们认为下巴打开和关闭杠杆系统和计算的后果的差异，在缩放的杠杆的缩放所需的时间打开的嘴（T（o））和所需的时间关闭的嘴（T（c））在猎物捕获。根据颚内杠杆的尺度差异预测T（o）和T（c），并与三种中央鱼类的T（o）和T（c）的观测尺度进行比较。视频记录（200和400图像s（-）（1））的猎物捕获大口黑鲈（33-206毫米标准长度，SL），斑点太阳鱼Lepomis punctatus（24-145毫米SL）和蓝鳃太阳鱼Lepomis macrochirus（24-220 mm SL），T（o）和T（c）的最快值取自每种鱼最快记录的摄食事件。对大口黑鲈SL鱼体回归的T（o）和T（c）标度指数分别为0.592和0.572。指数观察太阳鱼没有显着不同的预测值，根据在大口黑鲈和颌杠杆比例的种间差异的缩放指数。两个结论强调。首先，在25和220毫米SL之间，在罢工期间打开和关闭嘴所需的时间随着所有三个物种的身体大小而增加，这表明了这个家庭的一般模式。第二，进化的变化，颌杠杆力学是一个主要的决定因素的多样性的猎物捕获运动学在这个样本的centrarchid鱼。
The effects of differences among species in the scaling of lower jaw levers on the scaling of prey-capture kinematics are explored in three species of centrarchid fishes. We consider the jaw opening and closing lever systems and calculate the consequences of differences in the scaling of the in-levers for the scaling of the time taken to open the mouth (T(o)) and the time taken to close the mouth (T(c)) during prey capture. Predictions of T(o) and T(c), based on differences in the scaling of jaw in-levers, are compared with the observed scaling of T(o) and T(c) in three centrarchid fishes. Video recordings (200 and 400 images s(-)(1)) were made of prey capture in largemouth bass Micropterus salmoides (33-206 mm standard length, SL), spotted sunfish Lepomis punctatus (24-145 mm SL) and bluegill sunfish Lepomis macrochirus (24-220 mm SL), and the fastest values of T(o) and T(c) were taken from the fastest recorded feeding event for each fish. The scaling exponents of T(o) and T(c) regressed on fish SL for largemouth bass were 0.592 and 0.572, respectively. Exponents observed for sunfishes were not significantly different from predicted values, based on scaling exponents in largemouth bass and interspecific differences in jaw lever proportions. Two conclusions are emphasized. First, between 25 and 220 mm SL, the time taken to open and close the mouth during the strike increases with body size in all three species, suggesting a general pattern for this family. Second, evolutionary changes in jaw lever mechanics are a major determinant of the diversity of prey-capture kinematics in this sample of centrarchid fishes.