Pair bonding prevents reinforcing effects of testosterone in male California mice in an unfamiliar environment

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Abstract

Testosterone (T) can be released by stimuli such as social interactions, and thereby influence future social behaviours. Because the reinforcing effects of T can induce preferences for specific environmental locations, T has the potential to alter behaviour through space use. In a monogamous species, this T pulse may contribute differently to space use in sexually naive (SN) and pair-bonded (PB) males: SN males may be more likely to explore new areas to set up a territory than PB males, which are more likely to defend an existing, established territory. In this study, we test for variation in T-driven space use by examining variation in the formation of conditioned place preferences (CPPs) in SN and PB male California mice. In the threechambered CPP apparatus, subcutaneous administrations of physiological levels of T were used to repeatedly condition SN and PB males to a side chamber, which is an unfamiliar/neutral environment. The final tests revealed that T-induced CPPs in the side chamber are developed in SN, but not PB males. This study fills a gap in our knowledge about plasticity in the rewarding nature of T pulses, based on past social experience. © 2014 The Authors Published by the Royal Society. All rights reserved.

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APA

Zhao, X., & Marler, C. A. (2014). Pair bonding prevents reinforcing effects of testosterone in male California mice in an unfamiliar environment. Proceedings of the Royal Society B: Biological Sciences, 281(1788). https://doi.org/10.1098/rspb.2014.0985

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