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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Anim Behav. 2012 Jan 31;83(4):935–944. doi: 10.1016/j.anbehav.2012.01.012

Figure 1.

Figure 1

Amplitude varies with body length. In (a) body length is plotted against amplitude in a linear scale. Note that the relationship between body length and EOD amplitude is not linear, showing that EOD amplitude rises faster for longer males. In ( b) body length is plotted against the natural logarithm of EOD amplitude, after this correction we now have a linear correlation between body length and ln[EOD amplitude]. CPUE is “catch per unit effort”, our index of population density in the field.