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[Manifestations of predatory aggression in mice]
Zhurnal Vysshei Nervnoi Deiatelnosti Imeni I P Pavlova
|September 1, 1981
Summary
This study investigated predatory aggression in male mice across 12 inbred lines. Results show significant differences in attack latency and aggression levels, influenced by experience and prey type.
Area of Science:
- Ethology
- Animal Behavior
- Neuroscience
Background:
- Predatory aggression is a complex behavior with genetic and experiential components.
- Understanding the factors influencing predatory aggression is crucial for behavioral research.
Purpose of the Study:
- To investigate variations in predatory aggression among 12 inbred mouse lines.
- To assess the impact of prey type (locust vs. cricket) and experience on predatory behavior.
Main Methods:
- Male mice from 12 inbred lines were exposed to locusts or crickets.
- Predatory aggressiveness was quantified by attack latency and the percentage of mice exhibiting attacks.
- Repeated testing was employed to evaluate the effect of experience.
Main Results:
- Significant inter-line differences were observed in both attack latency and the proportion of aggressive mice.
- A negative correlation was found between the percentage of attacking mice and attack latency.
- Predatory aggressiveness increased with experience, indicated by decreased attack latency in repeated trials.
- The proportion of mice attacking increased with repeated prey presentation (50% in the first, 76% in the second test).
- Mice exhibited differential attack patterns towards locusts and crickets, varying by inbred line.
Conclusions:
- Inbred mouse lines display distinct patterns of predatory aggression.
- Experience and prey species significantly modulate predatory behavior in mice.
- Predatory aggressiveness is influenced by a combination of genetic predisposition and environmental factors.