Postweaning social experience and adult aggression in rats
Abstract
One group of male rats was reared continuously in small, stable colonies of three animals each during a ten-week period beginning when they were 46 days old. A second group of animals was also reared in small groups of three animals each but membership within these colonies was randomly changed at weekly intervals. Thereafter, all subjects were housed in individual cages. A 24 hr test of the subjects' aggression toward an unfamiliar male conspecific at 130-133 days of age indicated that only the heaviest animal in each of the stable colonies was aggressive. In contrast, all animals in the random-composition group were aggressive toward intruders. Scores on a second test of intruder-directed aggression administered when the subjects were nine months old were significantly related to scores on the first aggression test. Subtle variations in social experience during development are critical in establishing long-term patterns of aggression toward conspecifics in laboratory rats.
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Laboratory rats can form clear dominance relationships even in the absence of serious conflicts.
“Both findings suggest that laboratory rats can form clear dominance relationships even in absence of serious conflicts.”
From Ecological validity of social interaction tests in rats and mice (2019) · cites this paper as [109]
Dominant rats are most likely to attack intruders approaching the colony.
“Dominants are also most likely to attack intruders approaching the colony.94,109”
From Ecological validity of social interaction tests in rats and mice (2019) · cites this paper as [109]
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- Authors
- Lore, R. K., & Stipo-Flaherty, A.
- Affiliations
- Rutgers, The State University of New Jersey (US)
- Venue
- Physiology & Behavior
- Publisher
- Elsevier BV
- Published
- 1984-10
- Volume
- 33
- Issue
- 4
- Pages
- 571-574
- ISSN
- 0031-9384 (ISSN-L)
- OpenAlex
- W1985765583
- Cited by
- 64
- References
- 15
- Citations by year
- 2021: 1 · 2018: 1 · 2014: 1
- FWCI
- 5.76
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physiology & Behavior (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
- Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
- Social Sciences › Psychology › Social Psychology › Bullying, Victimization, and Aggression
- Keywords
- adult aggression, social rearing, social dominance, aggression development, laboratory rats
- MeSH terms
- Aggression, Animals, Humans, Male, Social Dominance, Social Environment, Rats
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