Publication
Title
Development of the musculus levator externus IV and the musculus obliquus posterior in **Haplochromis elegans** trewavas, 1933 (teleostei:Cichlidae) : a discussion on the shift hypothesis
Author
Abstract
An ontogenetic study of several postembryonic stages of Haplochromis elegans shows that the muscle referred to as musculus levator externus IV by previous authors in the adult stage of cichlid fishes is a compound muscle composed of the M. levator externus IV and the central portion of the M. obliquus posterior. Thus the supposed shift of the insertion area of the fourth external levator muscle from the fourth epibranchial to the fifth ceratobranchial, as deduced from adult morphology only, did not occur. Although this ontogenetic discovery does not change the functional specializations ascribed to the muscle by previous authors, it could have very important implications for the phylogenetic placement of the Cichlidae relative to such major taxa as Labroidei and Embiotocidae.
Language
English
Source (journal)
Journal of morphology. - Philadelphia, Pa
Publication
Philadelphia, Pa : 1982
ISSN
0362-2525
Volume/pages
173:2(1982), p. 225-235
ISI
A1982PC16700008
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 05.01.2015
Last edited 13.07.2017