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. 2010 Aug 13;4:52. doi: 10.3389/fnbeh.2010.00052

Figure 2.

Figure 2

Effects of AVT upon EOD rate in Brachyhypopomus gauderio and Gymnotus omarorum across seasons. (A,B) EOD rate as function of time during daytime in isolated fish during the non-breeding (water temperature: 20–22°C) and breeding (water temperature: 27–29°C) seasons. AVT was administered at time = 0 (arrowhead). (A) B. gauderio: a long-lasting step-like increase of EOD rate was observed in representative individuals immediately after AVT injection (IP, 10 μg/gbw) in both the non-breeding and breeding seasons. (B) G. omarorum: no effect of AVT (IP, 10 μg/gbw) on EOD rate was observed in representative individuals in either the non-breeding or breeding seasons. (C) Left axes: EOD rate of B. gauderio and G. omarorum 1 h before AVT administration (10 μg/gbw) and 60–120 min after. Right axes: Amplitude of the increase of EOD rate induced by AVT (10 μg/gbw) in both species. Bars represent medians (IQR) of the representative EOD rate values and of treatment indexes (TI, see Materials and Methods). ** p < 0.01, Mann Whitney U test. ns: non-significant.