Abstract
We have developed two protocols for inducing sustained, high-dose, alcohol-reinforced, oral alcohol drinking among some members of Macaca nemestrina social groups. Both protocols initially co-present alcohol and the entire daily food supply in a 2-h daily drinking session, with a later return to continuous availability of food. One protocol presents unflavored aqueous alcohol to partially food-deprived subjects; the other compares the drinking of flavored alcohol solutions with the drinking of equally palatable isocaloric non-alcohol solutions when monkeys are not deprived of food. Daily high-dose drinking developed in both protocols, with biomedical changes similar to those of early human alcoholism. Daily drinking to blood alcohol concentrations above 100 mg/dl was sustained in some animals after return to baseline food conditions, and this may have been related to social rank within the groups. Alcohol reinforced drinking of the flavored solutions. Although food deprivation initially produced heavier drinking, drinking with the two protocols was equivalent after return to baseline feeding conditions. These procedures open new opportunities for examining combined social and genetic influences on alcoholic-like drinking.
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Crowley, T.J., Andrews, A.E. Alcoholic-like drinking in simian social groups. Psychopharmacology 92, 196–205 (1987). https://doi.org/10.1007/BF00177915
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DOI: https://doi.org/10.1007/BF00177915