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Titolo:
METHIONINE-ENKEPHALIN IMMUNOREACTIVITY IN THE BRAIN OF THE BUDGERIGAR(MELOPSITTACUS-UNDULATUS) - SIMILARITIES AND DIFFERENCES WITH RESPECTTO OSCINE SONGBIRDS
Autore:
DURAND SE; LIANG WR; BRAUTH SE;
Indirizzi:
UNIV MARYLAND,DEPT PSYCHOL COLLEGE PK MD 20742
Titolo Testata:
Journal of comparative neurology
fascicolo: 2, volume: 393, anno: 1998,
pagine: 145 - 168
SICI:
0021-9967(1998)393:2<145:MIITBO>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
VOCAL CONTROL REGIONS; BASAL GANGLIA; MET-ENKEPHALIN; CHOLINERGIC RECEPTORS; AUDITORY PATHWAYS; ZEBRA FINCHES; SONG SYSTEM; ORGANIZATION; FOREBRAIN; NUCLEUS;
Keywords:
OPIOID PEPTIDES; EVOLUTION; VOCAL LEARNING; PARROT; IMMUNOCYTOCHEMISTRY; PSITTACINE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
66
Recensione:
Indirizzi per estratti:
Citazione:
S.E. Durand et al., "METHIONINE-ENKEPHALIN IMMUNOREACTIVITY IN THE BRAIN OF THE BUDGERIGAR(MELOPSITTACUS-UNDULATUS) - SIMILARITIES AND DIFFERENCES WITH RESPECTTO OSCINE SONGBIRDS", Journal of comparative neurology, 393(2), 1998, pp. 145-168

Abstract

The brain of the budgerigar (Melopsittacus undulatus), a small parrotthat acquires new vocalizations throughout life, was examined for immunoreactivity to the opioid peptide methionine enkephalin (mENK). mENKis a highly prominent feature of the chemical architecture of the forebrain vocal system of oscine songbirds. Forebrain vocal control nuclei are believed to have evolved independently in parrots and songbirds (Streidter [1994] J. Comp. Neurol. 343:35-56); however, recent studieshave found similarities in the neural organization of vocal control pathways in budgerigars and songbirds (Durand et al. [1997] J. Comp. Neurol. 377:179-206). Among the similarities are the existence of recursive pathways interconnecting vocal control neurons in the archistriatum, basal ganglia (i.e., lobus parolfactorius), and dorsal thalamus. Inthe present study, we found that all vocal control nuclei within the budgerigar forebrain exhibit prominent mENK-like immunoreactivity (ELI) in fibers and somata. We also found striking similarities between the morphology of ELI elements in budgerigar vocal control nuclei and that described previously in songbird vocal nuclei. Despite these similarities, the budgerigar dorsal striatopallidum (lobus parolfactorius, paleostriatum augmentatum, and paleostriatum primitivum) and somatomotor (anterior) archistriatum exhibit unique patterns of ELI. The dorsal striatopallidum contained far less ELI, whereas the archistriatum contained far more than would be expected on the basis of previous studiesof opioid peptides in other avian species, including pigeons, chickens, and songbirds. These differences may reflect neural specializationsunique to the budgerigar that contribute to the extraordinary flexibility of the vocal motor system of this species to acquire socially significant stimuli throughout life. (C) 1998 Wiley-Liss, Inc.

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Documento generato il 13/07/20 alle ore 07:42:17