Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"female preferences"”.
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Female preferences, paternity and fitness: A combined morphometric/molecular genetic study on Poecilia latipinna and Poecilia formosa
Mate preferences represent an adaptive choice when costs associated with reproduction can be alleviated through gaining direct or indirect benefits from choosing the better mate. Female poeciliid fishes do show clear mate preferences for certain males although males in this highly promiscuous taxon …
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The evolution of prezygotic reproductive isolation in the Drosophila pseudoobscura subgroup
… I begin by evaluating how the evolution of female preferences and male sexual characters lead to reinforcement between Drosophila pseudoobscura and its congener D. persimils. In particular, I will evaluate two alternative hypotheses; Preference Evolution and Discrimination Enhancement, to …
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Flexibility in extended phenotype sexual signals in great bowerbirds, Chlamydera nuchalis
… to environmental variability and variable female preferences. I studied populations of male great bowerbirds, Chlamydera nuchalis, which construct a complex bower display exclusively for mate choice. Urbanisation has increased the number of anthropogenic items available for males to use as …
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How environments shape ornament morphological evolution: bringing perspective to a century of inconsistent sexual allometry analysis
… third Chapter I used a meta-analysis to reveal female preference experiments generally failed to present females with male display structure sizes informed by allometric data. This implies questions central to sexual allometry theory – that female preferences drive the evolution of …
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SPECIES RECOGNITION IS DRIVING EVOLUTION OF THE ACOUSTIC MATING SYSTEM OF SHIELD BACK KATYDIDS (ORTHOPTERA: TETTIGONIIDAE: AGLAOTHORAX): BEHAVIORAL AND PHYLOGENETIC EVIDENCE
… Of the variable song characters, I estimated female preferences for pulse number and interpulse interval, the former with choice tests on a Y-maze and the latter with no-choice tests on a locomotion compensator. Females of two coexisting Transverse Range species each discriminated against the …
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Preferred Traits in Personal Trainers
… of variance showed a difference in male and female preferences within the lifestyle theme, and in the physical traits theme in clients who had some or no experience with a trainer. This suggests that despite the importance of education, personal trainers should still be aware of how their …
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Evolution of the pheromone communication system in the European Beewolf Philanthus triangulum F. (Hymenoptera: Crabronidae)
… the evolution of flamboyant male traits through female choice. It does not, however, address the question why males typically court and females choose. This asymmetry is now thought to be the result of the dichotomy in reproductive expenditures: Females invest primarily in parental care and males …
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Attractive silences in cricket courtship song : mate choice using a short-range signal /
… extensively and results commonly suggest that females use these signals for locating males, species-identification, and mate choice. Although numerous mating systems employ multiple signals, research has generally focused on long-range signals perhaps due to their prominence and ease of study. …
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The role of individual variation in auditory and visual processing: implications for mate choice
… in male sexual signals and variation in female sensory perception and behavioral responses to these signals. I addressed several specific research questions using the brown headed cowbird (Molothrus ater) as a model species: (i) how does male signaling behavior differ with the sex of the …
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The effect of diet and parasite load on female phonotaxis in the Texas field cricket, Gryllus integer
Female crickets respond selectively to variations in species-specific male calling songs. This selectivity has been shown to be age-dependent; older females are less choosy. However, female quality should also affect female selectivity. The effect of female quality on mate choice was examined in …
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Patterns and processes of speciation in North American chorus frogs (Pseudacris)
… among conspecific populations. I also find that female preferences have evolved in sympatry, suggesting that divergence in the contact zone is due to reinforcement.
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The effects of stress hormones on preferences for acoustic signals in female green treefrogs (Hyla cinerea) and barking treefrogs (Hyla gratiosa)
… with increased variation in mate choice by females. The association between environmental stressors and variation in mate choice suggests that circulating stress hormones (i.e., glucocorticoids) may mediate such effects, but this idea remains largely unexplored. I examined how circulating …
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Assessment of the supply chain and factors influencing consumer decisions to purchase bean-based processed products in Lusaka province of Zambia.
… acquisition. Importantly, the study reveals that female influence significantly shapes food purchasing decisions within households, with eating habits, wealth index, and the work status of the household head emerging as critical factors influencing the consumption of bean-based processed products. …
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Assessment of the supply chain and factors influencing consumer decisions to purchase bean-based processed products in Lusaka province of Zambia.
… acquisition. Importantly, the study reveals that female influence significantly shapes food purchasing decisions within households, with eating habits, wealth index, and the work status of the household head emerging as critical factors influencing the consumption of bean-based processed products. …
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The Maintenance of Male Color Polymorphism in Poecilia parae
… and drab-colored males that resemble juvenile females; (ii) `parae', the largest males that exhibit a striped tail and black vertical body bars that intensify during social interactions; and (iii) the blue, red, and yellow morphs that are of intermediate body size and display colorful body …
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The Single Female Home Buyer: A Qualitative Analysis of Social, Psycological, and Behavioral Themes
… professionals who routinely interact with female homebuyers. In addition, these findings suggest the continued need for home-buyer education and further research.