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 20 of 39 for “"female choice"”.
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Polymorphic mating signals and female choice in an Amazonian frog
Sexual selection, more specifically mate choice, is one of the most important mechanisms responsible for signal evolution and assortative mating. My thesis integrates genetic analysis, behavioral assays and morphological observations to understand the evolution of polymorphic male mating signals in …
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Effect of age on female choice in the field cricket, Gryllus interger
Female choice is an important element of sexual selection that may vary among females of the same species. Few researchers have investigated the causes of variation in selectivity with respect to potential mates and overall level of motivation toward a stimulus source representative of a mate. This …
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Sex in southern african spirostreptida millipedes : mechanisms of sperm competition and cryptic female choice
… gametic level via sperm competition and cryptic female choice. By combining studies of genital form and function with single and double mating experiments, this study elucidates these processes in some southern African Spirostreptida millipedes.
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Choice of College Major: An Exploration of Appalachian Female Choice of an Early Childhood Education Major
<p>First generation Appalachian female students are exposed to gender differences in roles and career choices that are modeled in the family. A case study approach was used to obtain qualitative data from five students at Eastern Kentucky University and their mothers regarding why these students …
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Mating dynamics of South African forest millipedes : Centrobolus (Diplopoda: Pachybolidae)
… sexual selection, sperm competition and cryptic female choice. The approach was to (1) quantify sexual dimorphism and find the selection pressures operating on the sexes, (2) determine the functional significance of male and female genitalia, (3) understand why there should be a conflict of …
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The Role of Male Vocal Signals During Male-Male Competition and Female Mate Choice in Greater Prairie-Chickens (<i>Tympanuchus cupido</i>)
… role in aggression, territorial defense, and female choice. The acoustic structure of vocalizations is influenced by physical constraints on the vocalizer, suggesting a potential for discrimination among individuals. In the lek-mating Greater Prairie-Chicken (<i>Tympanuchus cupido</i>), male …
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The effect of gregarine parasite infections, age, and diet on calling song structure and mating behaviour in the Texas field cricket, Gryllus integer
… sexual traits and subsequent effects on female choice. Male age has also been suggested to be an important factor in female choice if old age reflects superior genes. This study investigated the effects that gregarine gut parasites, age, and diet have on the calling and mating behaviour …
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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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Mate choice and reproductive success in the speckled bushcricket, Leptophyes punctatissima
… in that both sexes call. The male calls, the female replies and the male performs phonotaxis to the stationary female. Consequently mate choice could occur at either of two stages: first, during the interchange of calls and second, on the basis of proximate criteria once the male has …
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Immanuel Kant's Sparrow
… all the above features under the perspective of female choice. Instead of searching for a „key adaptation“ or single explanation for the imitative ability (song learning ability) in passerines, it might be more appropriate to focus on the multiplicity of factors involved in song production that - …
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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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After all, what do wasps want? The choice of sexual partner in the paper wasps Polistes
The choice of sexual partner is of fundamental importance, as there are deep consequences for the animal fitness. This is particularly important when females are genetically monogamic and must store male sperm for a long time and when incestuous copulations may increase probability for the …
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The Effects Of Courtship And Pairing Behavior On The Nonapeptide And Noradrenergic Systems Of Adult Male And Female Zebra Finches
… are important in pair bonding for both male and female zebra finches (Lowrey & Tomaszycki, 2014) and treatment with an OT antagonist results in an increased latency to pair in both sexes (Pederson & Tomaszycki, 2012). Thus, the role of nonapeptides in monogamous social behavior deserves further …
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Life cycle and host preferences in the Agapanthus borer (Neuranethes spodopterodes)
… the preferred host plant for oviposition by the female N.spodopterodes. Agapanthus inapertus, Agapanthus caulescens and Agapanthus praecox are the most infested with the Agapanthus borer eggs. Leaf sizes do not appear to be a factor that influences the female choice. There appears to be no …
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Life cycle and host preferences in the Agapanthus borer (Neuranethes spodopterodes)
… the preferred host plant for oviposition by the female N.spodopterodes. Agapanthus inapertus, Agapanthus caulescens and Agapanthus praecox are the most infested with the Agapanthus borer eggs. Leaf sizes do not appear to be a factor that influences the female choice. There appears to be no …
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Opercular Flaps as Sexual Ornaments For Male Longear Sunfish (Lepomis Megalotis)
… the effects of male opercular flap length on female mate choice and on male resource holding power in four laboratory experiments by manipulating the opercular flap length of matched pairs of males. In a fifth experiment, I investigated the effects of male body condition on male opercular flap …
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A Tale of Two Butterflies: The Effect of Larval Social Environment and Circadian Rhythms on Mating Behavior in Bicyclus anynana and Heliconius hewitsoni
<p>Two key components of mate choice research focus on: 1) who an organism mates with, which may be influenced by any number of factors from sexual ornamentation to male-male competition; and, 2) when an organism courts, be it daily, monthly, or seasonally. Both aspects are especially important for …
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Extrapair mating behaviors in the field sparrow: nocturnal singing and extraterritorial forays
… to announce the presence of extra-pair males to females and that extra-territorial forays serve primarily in prospecting and soliciting extra-pair matings. While forays are common among both male and female Field Sparrows, a higher foraying rate did not result in greater extra-pair paternity …
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