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 11 of 11 for “"lifetime reproductive success"”.
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The Evolution of Fitness After Prolonged Sperm Storage
… and sperm storage capacity to maximize lifetime reproductive success. I introduced extended mating deprivation as a selective pressure to experimentally evolve lines of D. melanogaster for characters related to mating and postcopulatory sexual selection. Evolution of the mate-deprived …
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Genetically based social communication in an inbred group-living wild mammal
… of MHC diversity on fitness, particularly lifetime reproductive success. Interestingly, the effect of MHC diversity on lifetime reproductive success was positive for males, while females displayed the opposite relationship. The resulting sexual conflict over MHC diversity appeared to be …
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From physiology to pixels: Resource allocation tradeoffs and noninvasive technologies for studying marine mammals
Long-term energy management shapes survival and reproductive success across mammals. Using the exceptional >60-year Weddell seal (Leptonychotes weddellii) demographic study in Erebus Bay, Antarctica, this dissertation links individual physiological traits to lifetime reproductive output in a …
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Causes and consequences of pair-bond disruption in socially monogamous species
… nonadaptive with no improvement in breeding success, while divorce triggered by breeding failure is adaptive in Snow Petrels, resulting in a higher subsequent breeding success. Widowhood rates are male-biased due to lower survival rates of females in wandering albatrosses. In both wandering …
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An Experimental Study of Behavioral Responses to Nest Predation and Brood Parasitism in a Migratory Songbird
… to evolve life history traits that maximize lifetime reproductive success and that these traits will include behavioral responses to factors limiting reproductive success. These behavioral responses may be especially important for birds breeding in highly fragmented landscapes where brood …
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Causes and consequences of pair-bond disruption in socially monogamous species
… is nonadaptive with no improvement in breeding success, while divorce triggered by breeding failure is adaptive in Snow Petrels, resulting in a higher subsequent breeding success. Widowhood rates are male-biased due to lower survival rates of females in wandering albatrosses. In both wandering …
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Reproductive Delay In The Female Cape Ground Squirrel (xerus Inauris)
… group members is fairly even (i.e. exhibits low reproductive skew), previous studies of Cape ground squirrels suggest the reproductive development of sub-adult females is inhibited by the presence of adult breeding female group mates. As reproductive delay is known to be influenced by a number of …
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The Effect Of Supplemental Food On The Life History Traits And Demography Of A Population Of Peromyscus Mexicanus
… to assess the effect of food addition on the reproductive and developmental characteristics of females and young, and to assess the effect of food addition on population dynamics. In a 6-month post-treatment period (Experiment 2), the response to food cessation was assessed.;Females on fed …
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Lifetime fitness and changing life history traits in Red-cockaded Woodpeckers
… Carolina: 1) what traits contribute most to lifetime fitness, 2) how have traits changed over time and how is climate change influencing life history, and 3) to what extent are traits that contribute to fitness and that are changing over time heritable in this species. I found that a …
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Evolutionary Origin and Maintenance of Sociality in the Small Carpenter Bees
… which exhibit all of the preadaptations for successful group living, yet present ecological and behavioural characteristics that seemingly disfavour frequent colony formation. These species are socially polymorphic with both / solitary and social nests collected in sympatry. Social colonies …
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Die Bedeutung der Paarbindung für das Fortpflanzungspotential von Papageienvögeln (Psittaciformes) : vergleichende Untersuchung zu Hormonstatus und Verhalten
… Brutpaare für den Lebens-Reproduktionserfolg (Lifetime-reproductive success, LRS) untersucht. Die Datenaufnahme erfolgte in dem Zuchtzentrum 'La Vera' der Loro Parque Fundación auf Teneriffa/ Spanien. Hier wurden in den Jahren 2006 und 2007 21 Brutpaare der Gattung Ara untersucht. Die …