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Titolo:
SURFACE-MORPHOLOGY OF BASILAR PAPILLA OF THE TUFTED DUCK AYTHYA-FULIGULA, AND DOMESTIC CHICKEN GALLUS-GALLUS-DOMESTICUS
Autore:
MANLEY GA; MEYER B; FISCHER FP; SCHWABEDISSEN G; GLEICH O;
Indirizzi:
TECH UNIV MUNICH,INST ZOOL,LICHTENBERGSTR 4 D-85747 GARCHING GERMANY UNIV REGENSBURG,ENT DEPT W-8400 REGENSBURG GERMANY
Titolo Testata:
Journal of morphology
fascicolo: 2, volume: 227, anno: 1996,
pagine: 197 - 212
SICI:
0362-2525(1996)227:2<197:SOBPOT>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
INNER-EAR; TYTO-ALBA; HAIR CELL; COCHLEA; INNERVATION; SEM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
G.A. Manley et al., "SURFACE-MORPHOLOGY OF BASILAR PAPILLA OF THE TUFTED DUCK AYTHYA-FULIGULA, AND DOMESTIC CHICKEN GALLUS-GALLUS-DOMESTICUS", Journal of morphology, 227(2), 1996, pp. 197-212

Abstract

Quantitative details of the surface morphology of the hearing organ, the Papilla basilaris, as seen in the scanning electron microscope aredescribed for the tufted duck Aythya fuligula and for comparison for the domestic chicken Gallus gallus domesticus, for which some published information is already available. As in the other avian species investigated to date, each papilla shows a unique constellation of features. The papilla of the tufted duck is 3.5 mm long in the unfixed state and contains 8,200 sensory hair cells. It shows systematic changes in its surface features along the length and across the width of the sensory epithelium. In general, its features and those of the chicken Papilla basilaris can be described as relatively primitive in comparison with other species. The tufted duck papilla does, however, show one feature that has so far been found to be well developed only in advanced papillae; the number of stereovilli per hair cell bundle is generally much higher on hair cells of the neural than those on the abneural side. This difference is only weakly developed in the chicken. It is clear that features considered to be evolutionarily advanced were acquiredindependently of one another during evolution and that each bird species can show a mosaic of primitive and advanced features. (C) 1996 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 01:32:20