Title
A phylogenetic perspective on absence and presence of a sex-limited polymorphism A phylogenetic perspective on absence and presence of a sex-limited polymorphism
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
Leiden ,
Source (journal)
Animal biology. - Leiden
Volume/pages
58(2008) , p. 257-273
ISSN
1570-7555
ISI
000258632000009
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Sex-limited polymorphism is widely distributed among animal taxa, but has only rarely been studied from a macro-evolutionary perspective. We investigate the evolution of female-limited polymorphism by mapping presence or absence of multiple discrete morphs on published phylogenetic trees for North American representatives of two damselfly genera. The results indicate that female polymorphy represents the ancestral condition based on the species included with subsequent loss and monomorphy representing the evolutionary end-point in most cases. According to one phylogeny, character optimization Suggests that expression of the polymorphism may be lost (to a state of monomorphy) and gained again (back to polymorphy). Earlier work indicated that changes from polymorphy to monomorphy might be coupled with evolution of the mating system from polyandry to monandry. The results presented here, however, do not convincingly support such view.
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