Relationship between emotionality of intruders and aggressive behavior of residents in rats

Annen, Yasumasa; Fujita, Osamu

doi:10.4992/psycholres1954.27.119

Cited by 4 publications

(1 citation statement)

References 15 publications

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“…For example, Sluyter et al (1995) showed that mice selected for short attack latency showed more nest-building behavior than those selected for high attach latency, whereas mice in a reciprocal selection experiment selected for high nest-building activity were more aggressive than those selected for low nest-building activity. Annen and Fujita (1985) showed that rats selected for “low emotional reactivity” (i.e., high ambulation and low defecation scores in a brightly lit runway) were also more aggressive than those selected for “high emotional reactivity or timidity,” and mink selected for confident reaction to humans showed more exploratory behavior across several social and non-social situations than mink selected for fearful reaction toward humans ( Malmkvist and Hansen, 2002 ). Mice selected for high wheel-running behavior (voluntary physical activity) were more explorative in the open-field test, and showed more risk-taking behavior in approaching a novel object relative to a control line ( Jónás et al, 2010 ).…”

Section: Coping In Animalsmentioning

confidence: 99%

A Hypothesis and Review of the Relationship between Selection for Improved Production Efficiency, Coping Behavior, and Domestication

et al. 2017

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Coping styles in response to stressors have been described both in humans and in other animal species. Because coping styles are directly related to individual fitness they are part of the life history strategy. Behavioral styles trade off with other life-history traits through the acquisition and allocation of resources. Domestication and subsequent artificial selection for production traits specifically focused on selection of individuals with energy sparing mechanisms for non-production traits. Domestication resulted in animals with low levels of aggression and activity, and a low hypothalamic–pituitary–adrenal (HPA) axis reactivity. In the present work, we propose that, vice versa, selection for improved production efficiency may to some extent continue to favor docile domesticated phenotypes. It is hypothesized that both domestication and selection for improved production efficiency may result in the selection of reactive style animals. Both domesticated and reactive style animals are characterized by low levels of aggression and activity, and increased serotonin neurotransmitter levels. However, whereas domestication quite consistently results in a decrease in the functional state of the HPA axis, the reactive coping style is often found to be dominated by a high HPA response. This may suggest that fearfulness and coping behavior are two independent underlying dimensions to the coping response. Although it is generally proposed that animal welfare improves with selection for calmer animals that are less fearful and reactive to novelty, animals bred to be less sensitive with fewer desires may be undesirable from an ethical point of view.

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Section: Coping In Animalsmentioning

confidence: 99%

A Hypothesis and Review of the Relationship between Selection for Improved Production Efficiency, Coping Behavior, and Domestication

et al. 2017

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Tsukuba High- and Low-Emotional strains of rats (Rattus norvegicus): An overview

1994

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This report compiles the results of a series of studies on the Tsukuba High- and Low-Emotional strains (THE and TLE) of rats (Rattus norvegicus) established at the University of Tsukuba, Japan. The THE and TLE strains have been selected, respectively, for low and high activity in a runway test. During the course of selection, defecation has increased in the THE strain and decreased in the TLE strain. These strain differences were not affected by maternal influences, early experience, or psychotropic drugs. THE rats were consistently inactive in all novel situations examined, while TLEs were very active. The level of spontaneous activity, however, was similar between the two strains. It was remarkable that THE rats showed more burrowing activity than TLE animals, whereas the latter displayed more aggression than the former. Differences in learning ability, concentration of neural transmitters, and social behavior were examined.

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Aggressive behaviour elicited in rats by different social situations. Analysis of aggressive patterns and individual differences

Martí

Pérez

Garcia-Sevilla

1988

Personality and Individual Differences

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Relationship between emotionality of intruders and aggressive behavior of residents in rats

Cited by 4 publications

References 15 publications

A Hypothesis and Review of the Relationship between Selection for Improved Production Efficiency, Coping Behavior, and Domestication

A Hypothesis and Review of the Relationship between Selection for Improved Production Efficiency, Coping Behavior, and Domestication

Tsukuba High- and Low-Emotional strains of rats (Rattus norvegicus): An overview

Aggressive behaviour elicited in rats by different social situations. Analysis of aggressive patterns and individual differences

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