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.
Results
Showing 1 to 20 of 134 for “"Sexual Selection"”.
-
Sexual behaviour and sexual selection in newts
… reports an investigation of the influence of sexual selection on the sexual behaviour of the European smooth newt, Triturus vulgaris, and of the North American red-spotted newt, Notophthalmus Viridescens. Both belong to the family Salamandridae of the amphibian order Urodela. Chapter 1 …
-
Sexual Selection and Mate Preference in Astatotilapia Burtoni
… is believed to be a consequence of intense sexual selection and male-male competition, making them an invaluable resource for evolutionary studies.</p> <p>Firstly, while previous studies have shown how territorial/non-territorial/ascending/ descending males have unique behavioral profiles, …
-
Sexual selection and biological diversification: Patterns and processes
… elaborate male displays (Chapters I and II) and sexual coercion and resource brokering (Chapter III). The results presented here suggest that sexual selection is an important force in evolution. In Chapters I and II, I investigate the relationship between male courtship displays and speciation. …
-
Foraging ecology, sexual selection, and divergence in sunfish (Lepomis spp.)
… between foraging ecology and both natural and sexual selection, and how these mechanisms interact to shape the phenotypic diversification of natural populations. Using bluegill (Lepomis macrochirus) and pumpkinseed sunfish (Lepomis gibbosus), I examined three major questions: 1) how are diet …
-
Communication and sexual selection in the barking gecko (Ptenopus kochi)
This study focused on elucidating the functional significance of some aspects of the behaviour of Koch's barking gecko, Ptenopus kochi, during a field season conducted at the Desert Ecology Research Unit in Namibia for four months in 1995. Ptenopus kochi is a terrestrial species, and males were …
-
Sociosexual Development: Infusing the Belsky, Steinberg, and Draper Model with Sexual Selection
… maturational and reproductive patterns, whereas sexual selection attempts to explain between- and within-sex differences in intersexual mate choice and intrasexual competition for members of the opposite sex. These two expansive evolutionary theories have been used by developmental scientists and …
-
MATERNAL EFFECTS AND SEXUAL SELECTION IN THE HELICONIA BUG, LEPTOSCELIS TRICOLOR (HEMIPTERA: COREIDAE)
… the long-standing "lek paradox" in the field of sexual selection. I also empirically investigate these effects in the heliconia bug, Leptoscelis tricolor. Females heliconia bugs lay eggs on several species of heliconia plants in Panama and Costa Rica. Host plant species choice by mothers largely …
-
MATERNAL EFFECTS AND SEXUAL SELECTION IN THE HELICONIA BUG, LEPTOSCELIS TRICOLOR (HEMIPTERA: COREIDAE)
… the long-standing "lek paradox" in the field of sexual selection. I also empirically investigate these effects in the heliconia bug, Leptoscelis tricolor. Females heliconia bugs lay eggs on several species of heliconia plants in Panama and Costa Rica. Host plant species choice by mothers largely …
-
Patterns of physical attractiveness, self-rated attractiveness and sexual selection strategy in women
… of women was associated with their sexual strategy selection and the extent to which physical and subjective measures of physical attractiveness should be regarded as separate constructs. I have then considered the manner in which an individual's physical attractiveness (viewed …
-
Sexual selection, reproductive strategies, and genetic variation in the longear sunfish (Lepomis megalotis)
ETDs are only available to UIUC Users without author permission
-
PRE- AND POST-COPULATORY SEXUAL SELECTION IN THE TORTOISE BEETLE ACROMIS SPARSA (COLEOPTERA: CHRYSOMELIDAE)
<p>Females in nearly all sexually reproducing taxa mate with multiple males. In these species, male fitness is dependent on traits used during both the pre-copulatory processes influencing mate acquisition, as well as the post-copulatory processes influencing fertilization. However, few studies …
-
PRE- AND POST-COPULATORY SEXUAL SELECTION IN THE TORTOISE BEETLE ACROMIS SPARSA (COLEOPTERA: CHRYSOMELIDAE)
<p>Females in nearly all sexually reproducing taxa mate with multiple males. In these species, male fitness is dependent on traits used during both the pre-copulatory processes influencing mate acquisition, as well as the post-copulatory processes influencing fertilization. However, few studies …
-
A Feminist Analysis of the Implications of Darwin's Theory of Sexual Selection on English Literature
In this thesis, I propose that Darwin's theory of sexual selection was often misinterpreted by upper class Victorian males in order to justify the mistreatment of both upper and working class women. Literature also reflected some of these misinterpretations of Darwin's theory regarding gender and …
-
The Importance of the Multicomponent Display in Sexual Selection of Black Morph Girardinus metallicus (Pisces: Poeciliidae)
… displays are intriguing with respect to sexual selection, I investigated the importance of size and coloration traits in sexual selection via female choice and male-male competition in <em>G</em>.<em> metallicus</em>.</p> <p>I found that saturation and hue did not differ significantly …
-
Sexual Selection in Mantled Howling Monkeys (Alouatta palliata), With an Emphasis on the Role of Female Mate Choice
<p>Despite early neglect, recent studies of sexual selection have shown a renewed interest in female reproductive strategies. Clearly the traditional portrayal of female animals as passive participants in mating is incorrect, but much is still unknown about female reproductive strategies, including …
-
Constraints on the evolution of attractive traits: Natural selection, sexual selection and quantitative genetics in the zebra finch
… predictions of the good-genes and runaway sexual selection hypotheses. In a 19 month breeding experiment, I found that redder billed males have more offspring that survive to independence due to their high reproductive rate. In contrast, redder billed females had few offspring that survived …
-
The Consequence of Anthropogenic Disturbance on Communication and the Operation of Sexual Selection in the Eastern Bluebird (Sialia Sialis)
… signaling environment are favored by natural selection. Anthropogenic disturbance can rapidly alter the signaling environment, and recent studies have shown that acoustic and visual signals change in response to these altered habitats. Although these studies provide important insight into the …
-
Phylogenetic Systematics of Snubnose Darters (Percidae, Etheostoma), With Discussion of Reproductive Behavior, Sexual Selection, and the Evolution of Male Breeding Color
… sites in some aquarium-held species. Results of sexual selection experiments (mate choice and male interaction) conducted in aquaria suggested that snubnose darter males compete for access to females using fin displays and aggression. The role of female choice of bright colors in males remained …
-
An Assessment of the Effects of Sexual Selection and the Social Environment on Mating Behaviors in Two Tiger Beetle Species (Coleoptera: cicindelidae)
Mate guarding is a sexually selected behavior performed by males of many species that results due to sperm competition. Facultative mating behaviors are predicted to occur in these taxa when changes in the social environment alter the benefits for guarding males. I used field observations and lab …
Page 1 of 7