Three experiments on mate choice in meadow voles (Microtus pennsylvanicus)

Area of Science:

• Behavioral Ecology
• Evolutionary Biology
• Animal Behavior

Background:

• Mate choice selectivity is hypothesized to correlate with an animal's mating system.
• Previous studies on monogamous prairie voles (Microtus ochrogaster) and polygamous montane voles (M. montanus) established baseline behaviors.
• Understanding species-specific mate preferences is crucial for evolutionary biology.

Purpose of the Study:

• To investigate mate choice selectivity in polygamous meadow voles (M. pennsylvanicus).
• To test the hypothesis that species differences in mate choice are linked to mating systems.
• To compare meadow vole mating preferences with those of prairie and montane voles.

Main Methods:

• Utilized experimental procedures previously applied to prairie and montane voles.
• Assessed female meadow vole preferences for familiar versus unfamiliar males.
• Evaluated female meadow vole preferences for unmated versus mated males.
• Assessed male meadow vole preferences for unmated versus mated females.

Main Results:

• Female meadow voles preferred mating with familiar males over unfamiliar males.
• No significant preference was observed in female meadow voles between unmated and mated males.
• Male meadow voles showed no preference between unmated and mated females.

Conclusions:

• Meadow vole mate choice results partially align with the hypothesis linking selectivity to mating systems.
• The polygamous meadow vole exhibited preferences similar to polygamous montane voles in some aspects but resembled monogamous prairie voles in others.
• Findings suggest a complex interplay between mating systems and mate choice evolution in voles.