DIFFERENTIAL AVERSIVE AND MNEMONIC COMPONENTS DISPLAYED BY FOUR DIFFERENT STRAINS OF RATS IN THE PASSIVE AVOIDANCE TASK

ORCE IG, CALDERÓN M, SERRANO L, SORIA G, FRAILE M, LANDA AI, GARGIULO PA.

Potrero de los Funes, San Luis, Argentina

Simposio; XXIV Reunión Científica Anual de la Sociedad de Biología y IV reunión científica de microscopía.; 2006

In previous studies we have proposed a passive avoidance task in which aversive-anxiogenic and mnemonic components were differentially measured. We studied here differences between individual patterns despite environmental conditions as a way to understand genetic elements of behaviour comparing different behavioural patterns observed in strains of Rattus norvegicus in a passive avoidance task. Males of four different strains of rats (Holtzman, Wistar, Atriche IPL y Sprague Dawley) were studied, weighing 230-250 g (n=15). The following parameters were considered: latency 1, latency 2, and the number of fecal boli expelled during training and experiment. No differences were observed in latency 1 and latency 2. Wistar strain rats exhibited a low number of fecal boli during test (p