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 5 of 5 for “"Caste Differentiation"”.
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Ecology and Evolution of Caste and Polymorphism in Pogonomyrmex Seed Harvester Ants
In conclusion, the many independent origins of caste in the social insects likely resulted from variation in the proximate factors that can yield phenotypic differences (e.g., larval diet, genetic variation, social regulation) and variation in the selective pressures favoring caste differentiation …
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DNA Methylation and DNA Methyltransferases in the Clonal Raider Ant, Ooceraea biroi
… DNA methylation regulates social behavior or caste differentiation, but others have challenges this idea and it remains controversial. To further understand the DNMT enzymes, we used the clonal raider ant, Ooceraea biroi, a tractable model organism with robust DNA methylation. We utilized …
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Behavioral and biochemical processing of natural and synthetic xenobiotics in the western honey bee apis mellifera
… detoxifying P450s, vary in activity relative to caste differentiation and temporal polyethism. From a behavioral perspective, I conducted a semi-field experiment to determine how free-flying foragers respond to natural and synthetic xenobiotics when alternate food is available. Some natural …
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The Effects of Temporal Cold Exposure and Caste Differences on Gene Expression and Epigenetics of Common Bumble Bee Species
… study of methylation to investigate tissue and caste level differences between queen and workers of the western species, Bombus vancouverensis. Methylation levels were highest in the brains and lowest in the ovaries of queens. Most differentially methylated sites/genes were observed from the …
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The evolution of caste-specific morphology and colony structure in ants
… colonies that possess morphologically distinct castes that divide biological roles among individuals. Males and reproductive females fill the reproductive role of the colony which includes mating, dispersal and egg laying. The typically sterile worker caste performs other tasks for the colony …