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Titolo:
Seasonal activation and inactivation of song motor memories in wild canaries is not reflected in neuroanatomical changes of forebrain song areas
Autore:
Leitner, S; Voigt, C; Garcia-Segura, LM; Vant Hof, T; Gahr, M;
Indirizzi:
Max Planck Inst Verhaltensphysiol, D-82319 Seewiesen, Germany Max Planck Inst Verhaltensphysiol Seewiesen Germany D-82319 sen, Germany CSIC, Inst Cajal, ES-28002 Madrid, Spain CSIC Madrid Spain ES-28002CSIC, Inst Cajal, ES-28002 Madrid, Spain Max Planck Soc, Res Ctr Ornithol, D-82346 Andechs, Germany Max Planck SocAndechs Germany D-82346 rnithol, D-82346 Andechs, Germany Free Univ Amsterdam, Dept Dev Neurobiol, NL-1081 HV Amsterdam, NetherlandsFree Univ Amsterdam Amsterdam Netherlands NL-1081 HV terdam, Netherlands
Titolo Testata:
HORMONES AND BEHAVIOR
fascicolo: 2, volume: 40, anno: 2001,
pagine: 160 - 168
SICI:
0018-506X(200109)40:2<160:SAAIOS>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
ADULT MALE CANARIES; HIGH VOCAL CENTER; FEMALE CANARIES; PROJECTION NEURONS; CONTROL NUCLEUS; BRAIN; SONGBIRDS; BEHAVIOR; BINDING; DEATH;
Keywords:
seasonal change; canary; songbird; singing; hormones; brain-behavior correlation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Leitner, S Max Planck Inst Verhaltensphysiol, D-82319 Seewiesen, Germany Max Planck Inst Verhaltensphysiol Seewiesen Germany D-82319 y
Citazione:
S. Leitner et al., "Seasonal activation and inactivation of song motor memories in wild canaries is not reflected in neuroanatomical changes of forebrain song areas", HORMONE BEH, 40(2), 2001, pp. 160-168

Abstract

Seasonal, testosterone-dependent changes in sexual behaviors are common inmale vertebrates. In songbirds such seasonal changes occur in a learned behavior-singing. Domesticated male canaries (Serinus canaria) appear to losesong units (syllables) after the breeding season and learn new ones until the next breeding season. Here we demonstrate in a longitudinal field studyof individual, free-living nondomesticated (wild) canaries (S. canaria) different mode of seasonal behavioral plasticity, seasonal activation, and inactivation of auditory-motor memories. The song repertoire composition of wild canaries changes seasonally: about 25% of the syllables are sung seasonally; the remainder occur year-round, despite seasonal changes in the temporal patterns of song. In the breeding season, males sing an increased number of fast frequency-modulated syllables, which are sexually attractive for females, in correlation with seasonally increased testosterone levels. About 50% of the syllables that were lost after one breeding season reappear inthe following breeding season. Furthermore, some identical syllable sequences are reactivated on an annual basis. The seasonal plasticity in vocal behavior occurred despite the gross anatomical and ultrastructural stability of the forebrain song control areas HVc and RA that are involved in syllable motor control. (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 03:50:45