Seasonal changes in intrinsic electrophysiological activity of song control neurons in wild song sparrows

2007 ◽  
Vol 193 (6) ◽  
pp. 677-683 ◽  
Author(s):  
John Meitzen ◽  
David J. Perkel ◽  
Eliot A. Brenowitz
Keyword(s):  
Seasonal Changes ◽  
Electrophysiological Activity ◽  
Song Sparrows ◽  
Song Control

Seasonal changes in avian song control circuits do not cause seasonal changes in song discrimination in song sparrows

2003 ◽  
Vol 57 (2) ◽  
pp. 119-129 ◽  
Author(s):  
Brendan J. Reeves ◽  
Michael D. Beecher ◽  
Eliot A. Brenowitz
Keyword(s):  
Seasonal Changes ◽  
Song Sparrows ◽  
Song Discrimination ◽  
Control Circuits ◽  
Song Control ◽  
Avian Song

scholarly journals Seasonal changes in the song control nuclei of the Rufous‐bellied Thrush, Turdus rufiventris (Oscine, Passeriformes, and Turdidae)

2019 ◽  
Vol 332 (3-4) ◽  
pp. 92-98
Author(s):  
Jamily Lorena ◽  
Christopher R. Olson ◽  
Carla S. Fontana ◽  
Claudio V. Mello ◽  
Maria Paula C. Schneider ◽  
...  
Keyword(s):  
Seasonal Changes ◽  
Song Control Nuclei ◽  
Song Control

Seasonal Growth of Song Control Nuclei Precedes Seasonal Reproductive Development in Wild Adult Song Sparrows

2001 ◽  
Vol 122 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Anthony D. Tramontin ◽  
Nicole Perfito ◽  
John C. Wingfield ◽  
Eliot A. Brenowitz
Keyword(s):  
Reproductive Development ◽  
Seasonal Growth ◽  
Song Sparrows ◽  
Song Control Nuclei ◽  
Song Control

scholarly journals Early nutritional stress impairs development of a song-control brain region in both male and female juvenile song sparrows ( Melospiza melodia ) at the onset of song learning

2006 ◽  
Vol 273 (1600) ◽  
pp. 2559-2564 ◽  
Author(s):  
Ian F MacDonald ◽  
Bethany Kempster ◽  
Liana Zanette ◽  
Scott A MacDougall-Shackleton
Keyword(s):  
Food Restriction ◽  
Rapid Development ◽  
Nutritional Stress ◽  
Brain Regions ◽  
Song Learning ◽  
Melospiza Melodia ◽  
Developmental Stress ◽  
Song Sparrows ◽  
Control Brain ◽  
Song Control

Birdsong is a sexually selected trait and is often viewed as an indicator of male quality. The developmental stress hypothesis proposes a model by which song could be an indicator; the time during early development, when birds learn complex songs and/or local variants of song, is of rapid development and nutritional stress. Birds that cope best with this stress may better learn to produce the most effective songs. The developmental stress hypothesis predicts that early food restriction should impair development of song-control brain regions at the onset of song learning. We examined the effect of food restriction on song-control brain regions in fledgling (both sexes, 23–26 days old) song sparrows ( Melospiza melodia ). Food restriction selectively reduced HVC volume in both sexes. In addition, sex differences were evident in all three song-control regions. This study lends further support to a growing body of literature documenting a variety of behavioural, physiological and neural detriments in several songbird species resulting from early developmental stress.

Seasonal Changes in Brain GnRH Immunoreactivity and Song-Control Nuclei Volumes in an Opportunistically Breeding Songbird

2001 ◽  
Vol 58 (1) ◽  
pp. 38-48 ◽  
Author(s):  
Scott A. MacDougall-Shackleton ◽  
Pierre J. Deviche ◽  
Renee D. Crain ◽  
Gregory F. Ball ◽  
Thomas P. Hahn
Keyword(s):  
Seasonal Changes ◽  
Song Control Nuclei ◽  
Song Control

Seasonal changes in astrocytes parallel neuronal plasticity in the song control area HVc of the canary

Glia ◽  
1999 ◽  
Vol 27 (1) ◽  
pp. 88-100 ◽  
Author(s):  
Karl W. Kafitz ◽  
Hans R. G�ttinger ◽  
Christian M. M�ller
Keyword(s):  
Neuronal Plasticity ◽  
Seasonal Changes ◽  
Control Area ◽  
Song Control

Soft song during aggressive interactions: Seasonal changes and endocrine correlates in song sparrows

2012 ◽  
Vol 62 (4) ◽  
pp. 455-463 ◽  
Author(s):  
Chris J. Maddison ◽  
Rindy C. Anderson ◽  
Nora H. Prior ◽  
Matthew D. Taves ◽  
Kiran K. Soma
Keyword(s):  
Seasonal Changes ◽  
Aggressive Interactions ◽  
Song Sparrows ◽  
Soft Song

Photorefractoriness and seasonal changes in the brain in response to changes in day length in American goldfinches (Carduelis tristis)

2002 ◽  
Vol 80 (12) ◽  
pp. 2100-2107 ◽  
Author(s):  
Regan H Marsh ◽  
Scott A MacDougall-Shackleton ◽  
Thomas P Hahn
Keyword(s):  
Seasonal Changes ◽  
Late Summer ◽  
Day Length ◽  
Free Living ◽  
Strong Trend ◽  
Carduelis Tristis ◽  
Song Control System ◽  
Song Control ◽  
Seasonally Breeding ◽  
The Brain

We examined neural and gonadal responses to photoperiod in a late-summer-breeding finch, the American goldfinch (Carduelis tristis). First we measured seasonal changes in the gonads of free-living goldfinches. Next we determined whether the gonads of goldfinches held on constant long days would eventually regress spontaneously. Finally, we compared the hypothalamic gonadotropin-releasing hormone (GnRH) system and song-control system of breeding and postbreeding birds. The results confirm that the gonads of wild goldfinches regress in late summer and show that the gonads of goldfinches held on constant long days regress spontaneously. Thus, according to at least one criterion, goldfinches become photorefractory, like other seasonally breeding songbirds. As well, goldfinches exhibited similar seasonal changes in the brain to spring-breeding birds. There was a decrease in GnRH immunoreactivity in autumn and a strong trend towards a reduction in the size of song-control regions (although this was statistically significant for only one area). Thus, although goldfinches breed late in summer as day length declines, some of their physiological responses to changes in photoperiod are similar to those that occur in spring-breeding songbirds.

scholarly journals Seasonal Changes in Patterns of Gene Expression in Avian Song Control Brain Regions

PLoS ONE ◽  
2012 ◽  
Vol 7 (4) ◽  
pp. e35119 ◽  
Author(s):  
Christopher K. Thompson ◽  
John Meitzen ◽  
Kirstin Replogle ◽  
Jenny Drnevich ◽  
Karin L. Lent ◽  
...  
Keyword(s):  
Gene Expression ◽  
Seasonal Changes ◽  
Brain Regions ◽  
Control Brain ◽  
Song Control ◽  
Avian Song
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