Experience with pups sustains maternal responding in postpartum rats.

Area of Science:

• Neuroscience
• Animal Behavior
• Reproductive Biology

Background:

• Postpartum maternal responsiveness is crucial for offspring survival.
• The duration and factors sustaining this responsiveness after delivery complications are not fully understood.

Purpose of the Study:

• To investigate the duration of postpartum maternal responsiveness in rats after cesarean section (CS).
• To determine the role of pup experience in sustaining maternal behavior following CS.

Main Methods:

• Maternal behavior was tested at various times after CS in Study 1.
• Females experienced varying durations of pup access (15-30 minutes) or sensory stimuli for 24 hours post-CS in Studies 2 and 3.
• Maternal responsiveness was assessed 10 days after CS.

Main Results:

• Maternal responsiveness persisted for 7 days but not 10 days after CS without intervention.
• 30 minutes of pup interaction, but not 15 minutes, sustained maternal behavior for 10 days post-CS.
• 24 hours of pup sensory stimuli exposure increased the likelihood of maternal behavior 10 days post-CS.

Conclusions:

• Postpartum maternal responsiveness can be sustained beyond 7 days with sufficient pup experience after CS.
• Even limited sensory exposure to pups can facilitate the maintenance of maternal behavior.
• These findings highlight the importance of early and adequate pup interaction for sustaining maternal care.