Population ecology and sexual preferences in the mating complex of the unisexual Amazon molly Poecilia formosa (Girard, 1859) [Elektronische Ressource] / vorgelegt von Katja U. Heubel

Population ecology and sexual preferences in the mating complex of the unisexual Amazon molly Poecilia formosa (GIRARD, 1859) von Katja U. Heubel Population ecology and sexual preferences in the mating complex of the unisexual Amazon molly Poecilia formosa (GIRARD, 1859) Dissertation zur Erlangung des naturwissenschaftlichen Doktorgrades des Fachbereiches Biologie der Universität Hamburg vorgelegt von Katja U. Heubel aus Ludwigsburg Hamburg im Januar 2004 TABLE OF CONTENTS: Outline of this thesis 1Chapter 1: General Introduction 3Coexistence and persistence in the mating complex of the Amazon Molly, Poecilia formosa and its sexual host species 3 The system 4 Evolution of sex: advantages and disadvantages of asexual reproduction 5 Niche partitioning and character displacement 7 Frozen niche variation model 8 Alternatives to frozen niche 9 Chapter 2: Population ecology in the mating complex of the unisexual Amazon molly Poecilia formosa 10 Introduction 10 Gaps in our knowledge 10 What explains the success of Amazons?