Is it all in the family? The effects of early social structure on neural-behavioral systems of prairie voles (Microtus ochrogaster).

Neuroscience
G D GreenbergB C Trainor

Abstract

The transition to parenthood is generally associated with a reduction in anxiety or anxiety-like behavior across a wide range of species. In some species, juveniles provide supplementary parental care for younger siblings, a behavior known as alloparenting. Although the fitness consequences of alloparenting behavior have been a focus of evolutionary research, less is known about how alloparenting behavior impacts affective states. In the socially monogamous prairie vole (Microtus ochrogaster), most juveniles exhibit alloparenting behavior, making the species an ideal model for examining the effects of alloparenting on future behavioral outcomes. We randomly assigned juvenile voles to alloparenting (AL) or no alloparenting (NoAL) groups and behaviorally phenotyped them for anxiety-like and social behaviors using the elevated plus maze (EPM), open field test (OFT), startle box, social interaction test, juvenile affiliation test, and partner preference test. AL voles displayed more anxiety-like and less exploratory behaviors than NoAL voles, spending significantly less time in the open arms of the EPM and center of an open field. We dissected the CA1 region of the hippocampus and the bed nucleus of the stria terminalis (BNST) from...Continue Reading

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Citations

Jul 1, 2015·Hormones and Behavior·Karen L Bales, Wendy Saltzman
Nov 3, 2016·Developmental Neurobiology·William M KenkelC Sue Carter
Dec 12, 2020·Frontiers in Behavioral Neuroscience·Rebecca H LawrenceKaren L Bales

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