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Related Experiment Videos

Mating in the monogamous male: behavioral consequences

T R Insel1, S Preston, J T Winslow

  • 1Laboratory of Neurophysiology, National Institute of Mental Health, Poolesville, MD 20837, USA.

Physiology & Behavior
|April 1, 1995
PubMed
Summary

Prolonged mating in male prairie voles induces lasting aggression and partner preference, alongside reduced fearfulness. This contrasts with short mating durations and non-monogamous species.

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Area of Science:

  • Behavioral Neuroscience
  • Animal Behavior
  • Evolutionary Biology

Background:

  • Monogamous mammals exhibit mate selectivity, paternal care, and aggression.
  • Previous studies showed increased aggression and affiliation in male prairie voles post-mating.

Purpose of the Study:

  • To investigate behavioral changes in male prairie voles following mating.
  • To determine the minimum mating duration for aggression induction.
  • To compare behavioral responses between monogamous and non-monogamous vole species.

Main Methods:

  • Behavioral tests (aggression, affiliation, plus maze exploration) after 24h mating, social exposure, or no contact.
  • Assessing aggression after 1, 6, or 24h of mating.
  • Comparing behavioral changes in prairie voles (Microtus ochrogaster) and montane voles (Microtus montanus).

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Main Results:

  • 24h mating increased aggression, partner preference, and reduced fearfulness (increased exploration).
  • Only 24h of mating induced enduring aggression; 1h caused transient effects.
  • Montane voles, a non-monogamous species, showed no such behavioral changes after mating.

Conclusions:

  • Prolonged mating is crucial for inducing pair bonding behaviors in monogamous male voles.
  • Increased aggression and affiliation in pair-bonded males are linked to decreased fearfulness.
  • Species-specific mating systems influence the behavioral consequences of mating.