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 7 of 7 for “"caste determination"”.
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The role of small RNAs in caste determination and differentiation in the bumble bee, Bombus terrestris
Investigating the molecular basis of queen-worker caste determination and differentiation in eusocial insects allows researchers to address fundamental aspects of evolution and development. In this regard, little is known of the role of gene regulation by microRNAs (miRNAs), non-coding RNA …
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Hybridization in Ants
… allowing hybrids to be shunted into the worker caste, potentially reducing the effects of hybrid sterility. In haplodiploid species, males do not have a father. They instead develop from unfertilized eggs as haploid clones of their mother. This means that interspecifically mated queens do not …
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Mechanisms involved in eusocial evolution in bees
… 4, I test the hypothesis that social insect castes evolved from an ancestral groundplan regulating the expression of larval diapause. I found that the main regulator of caste determination, larval nutrition, also regulates diapause plasticity in M. rotundata. Additionally, orthologs many of …
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Population ecology and parasitism in bumble bees (Hymenoptera: apidae)
… larva/worker ratio appears sufficient to explain caste determination. Rates of parasitization of bumble bee queens at three sites in Southwestern Virginia were studied. Endoparasites of spring queens included Locustacarus buchneri (Stammer) (Acarina: Podapolipidae), a mite infesting the abdominal …
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Reproductive plasticity and the evolution of the insect societies
… (queen) and non-reproductive (worker) castes. While a growing body of research continues to improve our understanding of the mechanisms underlying the development of these castes, less is known about how castes evolved from solitary ancestors. In this dissertation, I leverage …
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Queen size dimorphism in ants
… produced. This supports the kin conflict over caste determination hypothesis which views microgyny as a selfish reproductive tactic.
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Nurture is Nature: The Molecular Basis of Caregiver Genotype Effects on Larval Growth and Caste Development in the Clonal Raider Ant
… that brood phenotypes, including body size, caste morphology, developmental timing, and survival, are shaped by the genotype of their caregivers. I also found that some IGEs are dependent on caregiver age and number, demonstrating that environment modifies how genes in social partners …