期刊
JOURNAL OF EXPERIMENTAL BIOLOGY
卷 210, 期 24, 页码 4265-4271出版社
COMPANY BIOLOGISTS LTD
DOI: 10.1242/jeb.009498
关键词
swimming; power; metabolic rate; cost of transport
类别
As their swimming speed increased, bluegill sunfish (Lepomis macrochirus) switched from pectoral-fin-powered labriform swimming to undulations of the body axis. This gait transition occurred at a mean swimming speed of 0.24 +/- 0.01 m s(-1) and a pectoral fin beat frequency of 2.79 +/- 0.11 Hz (mean +/- s.e.m., N=6). The power output available from the main upstroke (adductor profundus) and downstroke (abductor superficialis) muscles, measured using the work-loop technique was maximal at the gait transition point. The cost of transport, measured by respirometry, increased as the fish switched from labriform to undulatory swimming. Our data show that bluegill changed gait as swimming speed increased to recruit additional muscle mass, rather than to maximize economy, as is the case for many terrestrial animals.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据