Fig. 3. The minimum cost of transport (MCOT) compared with body mass for data
listed in Table 3. RT indicates
studies that used a running tube; T indicates the use of a miniature
treadmill. The regression line is fitted to all species and is statistically
significant (r2=0.56, F1,39=25.40,
P<0.001). * indicates data for Marpissa
muscosa, which is discussed in the text.