Oxytocin helps keep
female prairie voles bonded with their partners.
Williams, J. R., Catania, K. C. & Carter, C. S. Development of partner preferences in
female prairie voles (Microtus ochrogaster): the role of social and sexual experience.
Characterization of the oxytocin system regulating affiliative behavior in
female prairie voles.
Activating circuits in the brains of
female prairie voles can make them «fall in love».
Andre Walcott, a graduate student in Ryabinin's laboratory, allowed male and
female prairie voles to form social bonds over one week.
By simply activating certain circuits in the brains of
female prairie voles, researchers made them «fall in love» with specific males.
Not exact matches
In a study published last fall, researchers showed that male
prairie voles that had been separated from their
female partners for four days — a much shorter amount of separation time than researchers had previously found to affect the
voles» physiology — exhibited depressionlike behavior and had increased levels of corticosterone, the rodent equivalent of the human stress hormone cortisol.
A study of the effect of alcohol on long - term relationships finds that when a male
prairie vole has access to alcohol, but his
female partner doesn't, the relationship suffers — similar to what has been observed in human couples.
Bachelor
prairie voles can't tell
females of their species apart.
The dramatic proof came in an experiment in which the researchers were able to make a mouse more caring for
females by giving it the vasopressin receptor gene from the
prairie vole, well known for being faithful and social.
The
prairie voles responded with increased displays of chivalry, included sniffing, licking, and grooming the
females, but the mountain
voles remained aloof as ever.