Fig. 2. Mean (+ S.E.M.) number of hops performed by females (N=8) in front of males under the ultraviolet-blocking (UV-), short-wave-blocking (SW-), medium-wave-blocking (MW-) and long-wave-blocking (LW-) filter treatments, during the three phases of the experiment. In control 1, females viewed empty stimulus cages; during mate assessment, a male was present in each cage; in control 2, males were once more removed.