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Showing 1 to 14 of 14 for “"Female mate choice"”.
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Hormonal mechanisms for variation in female mate choice
Although female mate choice has been the subject of many investigations, the causes of variation in mate choice are less understood. Theoretical models predict that individual females should show variable mate choices as a consequence of intrinsic and extrinsic factors. Empirical support for these …
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Genetic introgression and female mate choice within the Calendulauda albescens/C. barlowi hybrid zone
… from C. albescens to C. barlowi, with female C. albescens choosing to mate with male C. barlowi.
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Sexual Selection in Mantled Howling Monkeys (Alouatta palliata), With an Emphasis on the Role of Female Mate Choice
… 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 the extent of female mate choice. The …
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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 role of male-male aggressive signals in reproductive isolation between two hybridizing warblers
… the dynamics of the hybrid zone, both via female mate choice and male-male competition. In many species the same song functions for both female mate choice and male-male competition. However, some species, such as the Parulidae Warblers, sing songs with specific functions, where one song is …
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Effects of Anthropogenic Light and Noise on Anuran Breeding Behavior
… selection, and (3) artificial light influenced female mate choice. Ambient light and sound levels were quantified at five sites that varied in urbanization and, therefore, artificial light and anthropogenic noise levels. At these sites, calling males were recorded and ambient light was then …
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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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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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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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The role of cultural divergence in reproductive isolation in a tropical bird, the rufous-collared sparrow (Zonotrichia capensis)
… component of reproductive isolation through female mate preference. I investigated the role of cultural divergence in reproductive isolation in a widespread Neotropical passerine the rufous-collared sparrow (Zonotrichia capensis). In Chapter II, I investigated, the role of female preference …
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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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Sexual selection and biological diversification: Patterns and processes
… behavioral mechanisms by which males may bias female mating decisions in their favor, 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 …
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Mate choice in the Polychaete nereis acuminata : the role of aggression and parental experience
… species with a unique life cycle. A male and female form a monogamous pair bond, the female lays eggs and dies. The male then fertilises the egg and undertakes sole parental care until the eggs hatch and larvae leave the parental burrow; the male can then reproduce again. This body of work …
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Female Preference and Prezygotic Isolation In the Fundulus Notatus Species Complex
… operate nonlinearly across space and time, yet mate choice is frequently assessed under artificial conditions that may not reflect natural behavior. To address this limitation, female mate preference was investigated within the <em>Fundulus notatus</em> species complex, where <em>F. notatus</em> …