Article (Scientific journals)
Evolutionary trends and possible origin of the Weberian apparatus
Chardon, Michel; Vandewalle, Pierre
1997In Netherlands Journal of Zoology, 47 (4), p. 383-403
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Keywords :
Evolution; Ostariophysi; Otophysi; Weberian apparatus; Weberia
Abstract :
[en] A synthesis of anatomical, paleontological and ontogenetic knowledge of the Weberian apparatus is presented. The primitive state of the Weberian apparatus of the extant otophysan orders is deduced and evolutionary trends are discussed in a functional perspective. Main trends are shortening, reduction of weight, loss of intermediate structures, and ankylosis of anterior vertebral centra. Paleontological and developmental data help to develop a tentative reconstruction of a primitive Weberian apparatus, without a manubrium of the intercalarium. Sagemehl's hypothesis on the origin of the Weberian apparatus, which considers the interossicular ligament as the first structure appearing, provides a basis for a more detailed scenario in which each step leads to a more efficient sound transmitter.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Chardon, Michel ;  Université de Liège - ULiège > Relations académiques et scientifiques (Sciences)
Vandewalle, Pierre ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Département de Biologie, Ecologie et Evolution
Language :
English
Title :
Evolutionary trends and possible origin of the Weberian apparatus
Publication date :
November 1997
Journal title :
Netherlands Journal of Zoology
ISSN :
0028-2960
Publisher :
Brill, Netherlands
Volume :
47
Issue :
4
Pages :
383-403
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 24 August 2020

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