NDLI: Dissociable effects of social context on song and doublecortin immunoreactivity in male canaries.

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Dissociable effects of social context on song and doublecortin immunoreactivity in male canaries.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Alward, Beau A. Mayes, Wade D. Peng, Katherine Stevenson, Tyler J. Balthazart, Jacques Ball, Gregory F.
Description	Country affiliation: United States Author Affiliation: Alward BA ( Department of Psychological and Brain Sciences, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD, 21218-2686, USA.)
Abstract	Variation in environmental factors such as day length and social context greatly affects reproductive behavior and the brain areas that regulate these behaviors. One such behavior is song in songbirds, which males use to attract a mate during the breeding season. In these species the absence of a potential mate leads to an increase in the number of songs produced, while the presence of a mate greatly diminishes singing. Interestingly, although long days promote song behavior, producing song itself can promote the incorporation of new neurons in brain regions controlling song output. Social context can also affect such neuroplasticity in these song control nuclei. The goal of the present study was to investigate in canaries (Serinus canaria), a songbird species, how photoperiod and social context affect song and the incorporation of new neurons, as measured by the microtubule-associated protein doublecortin (DCX) in HVC, a key vocal production brain region of the song control system. We show that long days increased HVC size and singing activity. In addition, male canaries paired with a female for 2 weeks showed enhanced DCX-immunoreactivity in HVC relative to birds housed alone. Strikingly, however, paired males sang fewer songs that exhibited a reduction in acoustic features such as song complexity and energy, compared with birds housed alone, which sang prolifically. These results show that social presence plays a significant role in the regulation of neural and behavioral plasticity in songbirds and can exert these effects in opposition to what might be expected based on activity-induced neurogenesis.
File Format	HTM / HTML
ISSN	0953816X
e-ISSN	14609568
DOI	10.1111/ejn.12658
Journal	European Journal of Neuroscience
Issue Number	6
Volume Number	40
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2014-09-01
Publisher Place	France
Access Restriction	Open
Subject Keyword	Discipline Neuroscience Avian Proteins Metabolism Brain Physiology Canaries Microtubule-associated Proteins Neuropeptides Social Behavior Vocalization, Animal Acoustics Animals Cell Count Immunohistochemistry Neurons Photoperiod Research Support, N.i.h., Extramural Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Neuroscience

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