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Fig. 3. Comparison of female preference according to light-filter type. Exps 1 and
3 were control experiments conducted in the absence of other conspecifics, and
tested the preferences of non-reproductive and sexually receptive females,
respectively. Exp. 2 tested when small shoals of conspecifics could be viewed
through the two filter types. Exp. 4 tested preference when sexually
responsive males could be viewed (***P<0.01). In all four
experiments, preference is denoted by the proportion of time each individual
spent in either of the two preference zones (UV+/UV–) where the fish was
facing towards the choice compartments during the 20 min test. Values are
means ± S.E.D. (N=10).
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