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Maternal behaviour in septal rat females
V Nováková1, J Sterc, S Kuchár
1Institute of Animal Physiology, Slovak Academy of Sciences, Kosice.
Physiological Research
|January 1, 1993
Summary
Dorsal septal lesions disrupt maternal behavior, causing infanticide in Wistar females but not others. Early social enrichment prevents this impairment, highlighting the septum's role in maternal care.
Area of Science:
- Neuroscience
- Behavioral Neuroscience
- Animal Behavior
Background:
- The septum, a brain region, plays a crucial role in regulating maternal behavior.
- Lesions in the dorsal septum can alter maternal care, but the effects vary across different mouse strains.
Purpose of the Study:
- To investigate the impact of dorsal septal lesions on maternal behavior in Wistar, Long-Evans, and hybrid female mice.
- To explore the influence of early-life social environment on the effects of septal lesions on maternal care.
Main Methods:
- Surgical ablation of the dorsal septum in female mice of different strains and their hybrids.
- Observation and quantification of maternal behaviors, including infanticide and parental care.
- Assessment of the effects of enriched social environment during development.
Main Results:
- Dorsal septal lesions induced infanticide in Wistar females, while other groups showed unimpaired mothering.
- Infanticidal Wistar females displayed xenoparental behavior, not increased mouse-killing.
- Early social enrichment prevented maternal behavior impairment after dorsal septal lesions.
Conclusions:
- The dorsal septum is critical for normal maternal behavior, with specific roles in different mouse strains.
- Early social environment can modulate the impact of septal lesions on maternal care.
- Complete septal ablation leads to a breakdown of maternal behavior and infanticide across all groups.
