Selective breeding for negative contrast in consummatory behavior.

C F Flaherty; K L Krauss; G A Rowan; P S Grigson

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PubMed · 8308490

Selective breeding for negative contrast in consummatory behavior.

C F Flaherty·K L Krauss·G A Rowan·P S Grigson

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Abstract

Rats showing either large or small reductions in licking following a shift from 32% to 4% sucrose were selectively bred for 7 generations. Rats from the 2 resulting lines reliably differed in successive negative contrast and in activity (radial-arm maze and open field). Differences in activity and contrast were not correlated. Heritability (h2) of the reaction to sucrose shift was reliable in the last 6 filial generations and equaled 0.64 in the F7 generation. The 2 lines did not differ (a) in response to the absolute rewarding value of sucrose or cocaine; (b) in open-field defecations or thigmotaxis; (c) in anticipatory contrast; or (d) in responsivity to midazolam. Responsivity to reward reduction may involve a relatively delimited psychological process that is amenable to selection.

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Animals Arousal Cocaine Conditioning, Classical Consummatory Behavior Drinking Female Male Midazolam Motivation Motor Activity Phenotype Rats Selection, Genetic Social Environment Sucrose Taste Journal Article Research Support, Non-U.S. Gov't

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C F Flaherty, K L Krauss, G A Rowan, P S Grigson. 1994. Selective breeding for negative contrast in consummatory behavior.. https://pubmed.ncbi.nlm.nih.gov/8308490/

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