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Migration And The Evolution Of Sexual Dichromatism: Evolutionary Loss Of Female Coloration With Migration Among Wood-Warblers, Richard Simpson, Michele Johnson, Troy Murphy
Migration And The Evolution Of Sexual Dichromatism: Evolutionary Loss Of Female Coloration With Migration Among Wood-Warblers, Richard Simpson, Michele Johnson, Troy Murphy
Troy G Murphy
The mechanisms underlying evolutionary changes in sexual dimorphism have long been of interest to biologists. A striking gradient in sexual dichromatism exists among songbirds in North America, including the wood-warblers (Parulidae): males are generally more colourful than females at northern latitudes, while the sexes are similarly ornamented at lower latitudes. We use phylogenetically controlled comparative analysis to test three nonmutually exclusive hypotheses for the evolution of sexual dichromatism among wood-warblers. The first two hypotheses focus on the loss of female coloration with the evolution of migration, either owing to the costs imposed by visual predators during migration, or owing to …
Migration And The Evolution Of Sexual Dichromatism: Evolutionary Loss Of Female Coloration With Migration Among Wood-Warblers, Richard Simpson, Michele Johnson, Troy Murphy
Migration And The Evolution Of Sexual Dichromatism: Evolutionary Loss Of Female Coloration With Migration Among Wood-Warblers, Richard Simpson, Michele Johnson, Troy Murphy
Michele A Johnson
The mechanisms underlying evolutionary changes in sexual dimorphism have long been of interest to biologists. A striking gradient in sexual dichromatism exists among songbirds in North America, including the wood-warblers (Parulidae): males are generally more colourful than females at northern latitudes, while the sexes are similarly ornamented at lower latitudes. We use phylogenetically controlled comparative analysis to test three nonmutually exclusive hypotheses for the evolution of sexual dichromatism among wood-warblers. The first two hypotheses focus on the loss of female coloration with the evolution of migration, either owing to the costs imposed by visual predators during migration, or owing to …