The genus Microtus comprises many species with diverse social organizations. The neurobiology of pair bonding in prairie voles will be a primary, but not exclusive, focus of this review. Much of our understanding of the neurobiology of pair bonding has come from comparative approaches in all three contexts, particularly through investigations of the prairie vole, Microtus ochrogaster. Within these contexts, comparative approaches can accelerate the identification of neurobiological, genetic, developmental, and evolutionary factors underlying the behavior in question. The most powerful opportunities for investigating the biology of behavior are rooted in: firstly, phylogenetically distant species exhibiting convergent behavior, secondly, closely related species exhibiting strikingly divergent behavior, and thirdly, individual species exhibiting high levels of intraspecific variation in behavior.
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March 2023
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