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Titolo:
MORPHOLOGY OF THE BASILAR PAPILLA OF THE BUDGERIGAR, MELOPSITTACUS-UNDULATUS
Autore:
MANLEY GA; SCHWABEDISSEN G; GLEICH O;
Indirizzi:
TECH UNIV MUNICH,INST ZOOL D-85747 GARCHING GERMANY
Titolo Testata:
Journal of morphology
fascicolo: 2, volume: 218, anno: 1993,
pagine: 153 - 165
SICI:
0362-2525(1993)218:2<153:MOTBPO>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRITICAL RATIOS; ORGANIZATION; CELLS; BIRD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
G.A. Manley et al., "MORPHOLOGY OF THE BASILAR PAPILLA OF THE BUDGERIGAR, MELOPSITTACUS-UNDULATUS", Journal of morphology, 218(2), 1993, pp. 153-165

Abstract

The budgerigar is a representative of the parrot-like birds that, like song birds, have developed complex communication signals. This species is interesting in a psychoacoustic sense, in that it shows unusually good frequency discriminative abilities above about 1 kHz. To begin to understand whether the peripheral hearing organ plays a role in such specializations, we have carried out a quantitative study of the fine anatomy of the basilar papilla and compared it to data from other avian species. The budgerigar basilar papilla is about 2.5 mm long in the living animal and contains about 5,400 hair cells. The hair cells ofthe papilla show regional specializations similar to those found in other birds and are described from scanning electron microscopic and light microscopic studies. Regional changes in the basilar papilla, and in the basilar and tectorial membranes are described from light microscopic data. As noted for other avian species, the constellation of morphologic features found in the budgerigar is unique. In general, the hair cell patterns of the budgerigar papilla showed fewer specializations than found in, e.g., a songbird, the starling, but more than seen in a primitive land bird, e.g., the pigeon. There were no features thatwere obviously related to the unusual psychoacoustic performance of this species. (C) 1993 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 03:01:52