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 41 for “"reproductive behavior"”.
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Reproductive Behavior of the Angelfish, Pterophyllum Scalare (Pisces: Cichlidae)
Made available in DSpace on 2014-12-12T01:27:38Z (GMT). No. of bitstreams: 1 7219810.pdf: 3767033 bytes, checksum: 3da150f631c359907d47f2603a547f91 (MD5) Previous issue date: 1972
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Genetic analyses of reproductive behavior in the domestic fowl and the Japanese quail
… further the genetics and physiology of sexual behavior in chickens and Japanese quail. The populations used in this research included lines that had undergone over 20 generations of divergent selection for high and low mating frequency and the random bred control population from which the …
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Phylogenetic Systematics of Snubnose Darters (Percidae, Etheostoma), With Discussion of Reproductive Behavior, Sexual Selection, and the Evolution of Male Breeding Color
… described and much work has been done on the behavior of these fishes. However, phylogenetic relationships both among snubnose darter species and between snubnose darters and close relatives have not been clearly resolved. This dissertation used an original data set, complete cytochrome b DNA …
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The Agonistic and Reproductive Behaviors of the Gulf Killifish, Fundulus grandis and Their Physiological Components.
The behavioral repertoire of Fundulus grandis includes 32 acts, 5 of which are found only in the male. The acts are described and categorized by function.Male-male and male-female pairs were observed for agonistic and reproductive behaviors, diel rhythms of behavior, endogenous hormone levels …
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Espécies do gênero Physalaemus no Estado do Rio de Janeiro (Amphibia, Anura, Leptodactylidae)
… as well as characteristics related with the reproductive behavior, including breeding sites; larval development; calling sites; breeding seasons. Some vocalizations are described. Taxonomic and biogeographic notes of the species are discussed and compared with the literature.
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The evolution and benefits of nest association and other reproductive strategies in North American minnows (Cyprinidae)
… histories of North American minnows, including reproductive behavior. In order to promote understanding of the evolution, behavior and ecology of minnows, a list of minnows for which reproductive behaviors are known was compiled. These behaviors were classified so that the evolution and adaptive …
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Vliv světelného znečištění na noční motýly (Lepidoptera)
… Particular emphasis is placed on changes in reproductive behavior, predation, and pollination interactions. The thesis also includes an overview of studies addressing spectral light preferences and their effects on moth activity. Finally, potential mitigation strategies are discussed, …
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An economic analysis of women's schooling on fertility and contraceptive use in developing countries: A case study of Tanzania
… variables are important factors in explaining reproductive behavior. The fertility model indicates that education levels are consistently associated with lower fertility rates, while the contraceptive use model indicates that education is positively associated with contraceptive use. Overall, …
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Use of a translocation and a recessive deleterious gene to retard population growth in Blattella germanica (L.)
… held in separate containers. Various aspects of reproductive behavior of different genotypes were evaluated in separate experiments including fecundity, competitiveness and assortative mating. Linkage between T(8;9) and sty was also measured. The translocation T(8;9) and sty were successfully …
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Oxytocin, Dopamine, and the Neuromodulation of Mating Behavior in C. Elegans
… "how" and the "why" of oxytocin as a releaser of reproductive behavior. To do so, I take the wide view across 600 million years of metazoan evolution, focusing on the oxytocin-mediated mating behavior and physiology of the often-overlooked invertebrates. By looking to these simpler animals with …
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Pharmacological studies of C. elegans cultured in axenic media: nicotine and its effects on growth, body morphology, and reproduction
… of changes in morphology, development, reproductive fitness, or lifespan as a result of adaptation to liquid axenic media. The WormSlide microfluidic device was developed and used with high temporal resolution automated microscopy to quantify the morphological changes, growth rates, …
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SEXUAL MATURATION, OOCYTE DEVELOPMENT AND LIFE HISTORY VARIATION IN LAKE SUPERIOR BURBOT (LOTA LOTA)
… it is important to better understand the reproductive ecology of burbot. Currently, little is known about the reproductive ecology and the variation within reproductive behavior of burbot. In this study I evaluated the reproductive ecology of southern Lake Superior burbot by characterizing …
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Information Interventions to Reduce Maternal Mortality in Indonesia
… risk of death in childbirth can change women’s reproductive behaviors. In the first two chapters, I use the Maternal Mortality Module from the Demographic and Health Survey (DHS) in Indonesia to examine fertility and reproductive behavior responses to a sister’s death in childbirth. Fertility …
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Stress in the Red-cockaded Woodpecker: Hormonal Mechanisms of Reproductive Suppression in Helper Males and Impacts of Military Training Activities
… for examining proximate mechanisms of animal behavior and the physiological impacts of human activities on wildlife. In these studies I measured plasma levels of the stress hormone corticosterone in the endangered red-cockaded woodpecker (Picoides borealis) to determine their role in the …
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Sexual Segregation in White-Tailed Deer: Intersexual Divergence in Digestive Function, Morphology, and Behavior
… were evaluated based on documented changes in reproductive behavior and physiology related to parturition, and differences in species social structure and reproductive behavior. I hypothesized that the definition for group membership will influence patterns observed in group associations …
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Estudo da evolução dos padrões de comportamento reprodutivo de Cynolebiatini (Cyprinodontiformes - Rivulidae)
The reproductive behaviors of nineteen species of the Cynolebiatini are described in this study. The obtained data added to the literature data plus personal communications provided some ethological patterns. These patterns were optimized through strong phylogenetic trees based principally on …
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Landscape dynamics from 1990--2010 and the human to apex predator (red-tailed hawk) relationship on La Gonave, Haiti
… one nest. Many respondents noted the aggressive behavior of RTHs during nesting, suggesting reproductive behavior on the island. Our results indicate that RTHs inhabiting this island were not persecuted, despite intense predation of domestic chickens. Aside from predation near homes, villagers do …
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