Abstract
The levels of plasma corticosterone and conflict behaviour were followed in male and female water deprived Wistar rats exposed to the punished (0.2 or 0.8 mA) drinking test. The unpunished drinking, performed under familiar or unfamiliar conditions, and plasma corticosterone levels of these male and female rats were determined. Plasma corticosterone was elevated in water-deprived rats compared to rats under normal conditions. In all cases plasma corticosterone levels were considerably higher in water deprived females than in males. The highest levels in both sexes were obtained following drinking punished with 0.8 mA shocks. While the unpunished drinking did not differ between the two sexes, the punished drinking was significantly lower in females than in males. Although female rats displayed less punished licks and had higher plasma corticosterone levels than males, there was no correlation between the two parameters.
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