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Fig. 5. Effect of anosmia on behaviour of male tilapia in the presence of pre- or
post-ovulatory females. Histograms of the proportion of time spent by anosmic
(filled bars) and sham-operated (open bars) males in different behavioural
categories in the presence of pre-ovulatory (A) and post-ovulatory (B)
females. Imm=immobile, Swim=swimming, Court=courtship, Agg=aggression,
Other=other types of behaviour (see text for details). Data are shown as means
± S.E.M. (N=6). There are no
significant differences between the behaviours of anosmic and sham-operated
males.