Patterns of correlated character evolution in flightless birds: a phylogenetic approach

Authors
Citation
J. Cubo et W. Arthur, Patterns of correlated character evolution in flightless birds: a phylogenetic approach, EVOL ECOL, 14(8), 2000, pp. 693-702
Citations number
40
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
EVOLUTIONARY ECOLOGY
ISSN journal
0269-7653 → ACNP
Volume
14
Issue
8
Year of publication
2000
Pages
693 - 702
Database
ISI
SICI code
0269-7653(2000)14:8<693:POCCEI>2.0.ZU;2-B
Abstract
Given a robust phylogeny for a particular higher taxon, it is possible to m ap the evolution of various character changes onto the phylogeny and study the extent to which they co-occur. Of particular interest are the questions of (a) whether particular morphological changes tend to accompany changes in ecology or behaviour to which they bear a functional relationship and (b ) whether changes in those 'primary' morphological characters tend to be as sociated with correlated changes in other aspects of morphology, as would b e expected given the high level of morphological integration that character izes most organisms. Here we report a study of this kind, looking at morpho logical correlates of the evolution of flightlessness in birds, and using t he concentrated changes test to determine whether associations are signific ant. We find that pectoral reduction, pelvic enlargement and changes in sku ll morphology significantly co-occur, and that these are usually achieved t hrough heterochrony rather than other kinds of developmental reprogramming.