Sexual selection and speciation: mechanisms in Lake Victoria cichlid fish

Leiden Repository

Sexual selection and speciation: mechanisms in Lake Victoria cichlid fish

Type: Doctoral Thesis
Title: Sexual selection and speciation: mechanisms in Lake Victoria cichlid fish
Author: Maan, Martine Elisabeth
Publisher: Institute of Biology, Department of Animal Ecology, Faculty of Mathematics and Natural Sciences, Leiden University
Issue Date: 2006-05-11
Keywords: Evolution
Haplochromine cichlid fish
Lake Victoria
Mate choice
Nuptial coloration
Parasite-mediated sexual selection
Predation
Sensory drive
Speciation
Abstract: The several hundred species of cichlid fish endemic to Lake Victoria (East-Africa) are textbook examples of explosive speciation. This thesis evaluates the hypothesis that sexual selection by female mate choice has contributed to this process of divergence, by investigating the mechanisms that drive the evolution and divergence of mating preferences for colour patterns. I studied two representative model systems, the highly polymorphic species Neochromis omnicaeruleus and the species pair Pundamilia nyererei and P. pundamilia. I used observational and experimental approaches in both laboratory and field. My work indicates that the interaction between sexual selection and habitat heterogeneity, in terms of photic environment and parasite exposure, can promote population divergence in male nuptial coloration and female preferences. In contrast, predation pressure and water turbidity may constrain the evolution and persistence of conspicuously coloured morphs and species.
Description: Promotores: J.J.M. van Alphen, O.Seehausen
With Summary in Dutch
Printed by Ipskamp Print Partners, Enschede
Faculty: Faculteit der Wiskunde en Natuurwetenschappen
Citation: Maan, M.E., 2006, Doctoral Thesis, Leiden University
ISBN: 9789090205236
9090205233
Sponsor: Netherlands Foundation for the Advancement of Tropical Research (NWO-WOTRO, grant no. 82-243)
Handle: http://hdl.handle.net/1887/4382
 

Files in this item

Description Size View
application/pdf Propositions 46.79Kb View/Open
application/pdf Full Text 139.0Mb View/Open
application/pdf Curriculum vitae 55.70Kb View/Open
application/pdf Summary in Dutch 804.3Kb View/Open
application/pdf References 139.9Kb View/Open
application/pdf Chapter 9 10.76Mb View/Open
application/pdf Chapter 8 14.22Mb View/Open
application/pdf Chapter 7 11.74Mb View/Open
application/pdf Chapter 6 9.021Mb View/Open
application/pdf Chapter 5 11.42Mb View/Open
application/pdf Chapter 4 11.22Mb View/Open
application/pdf Chapter 3 11.44Mb View/Open
application/pdf Chapter 2 4.902Mb View/Open
application/pdf Chapter 1 4.912Mb View/Open
application/pdf Title page, Table of contents 331.9Kb View/Open
application/pdf Cover 887.9Kb View/Open
text/html Links to published articles 12.80Kb View/Open

This item appears in the following Collection(s)