CheneBelgiqueV1, Main, Exploration, bibRecord, 000A17

Early seasonal development of brain song control nuclei in male blue tits

Identifieur interne : 000A17 ( Main/Exploration ); précédent : 000A16; suivant : 000A18

Early seasonal development of brain song control nuclei in male blue tits

Auteurs : Samuel P. Caro [Belgique] ; Marcel M. Lambrechts [France] ; Jacques Balthazart [Belgique]

Source :

Neuroscience letters [ 0304-3940 ] ; 2005.

RBID : PMC:1876734

Abstract

In songbirds, the seasonal growth of the song system is generally thought to be controlled by the spring increase in plasma levels of testosterone and/or related changes in singing activity. Here we report an extremely early seasonal growth (before February) of the song control nuclei HVC and RA in Corsican blue tits (Parus caeruleus) indicating that the vernal development of these nuclei occurs well before the vernal increase in plasma testosterone, testes size and song activity. The development of HVC and RA occurred simultaneously in two populations that are known to breed consistently one month apart as an adaptation to heterogeneous landscapes (predominance of broad-leaved deciduous versus evergreen oak trees). The unidentified environmental and/or physiological cues controlling the plasticity in the song system must therefore differ, at least in part, from those affecting other morphological and physiological traits controlling reproduction.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1876734

DOI: 10.1016/j.neulet.2005.03.074
PubMed: 16051436
PubMed Central: 1876734

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en"><p id="P2">In songbirds, the seasonal growth of the song system is generally thought to be controlled by the spring increase in plasma levels of testosterone and/or related changes in singing activity. Here we report an extremely early seasonal growth (before February) of the song control nuclei HVC and RA in Corsican blue tits (<italic>Parus caeruleus</italic>
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Early seasonal development of brain song control nuclei in male blue tits

Early seasonal development of brain song control nuclei in male blue tits

Source :

Abstract

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