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 20 of 21 for “"social insect"”.
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January: Search Based On Social Insect Behavior
January is a group of interacting stateless model checkers. Each agent functions on a processor located on a super computer or a network of workstations (NOW). The agent's search pattern is a semi-random walk based on the behavior of the grey field slug (Agriolimax reticulatus), the house fly …
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A symbiotic perspective on distributed algorithms and social insects
… species. The biological systems we consider are social insect colonies, and the problems we study include foraging for food (exploring the colony's surroundings), house hunting (reaching consensus on a new home for the colony), and task allocation (allocating workers to tasks in the colony). The …
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Uncovering Markers for Honey Production and Defensive Behaviour Using Pooled Genome-Wide Data with the Honeybee (Apis Mellifera)
… honeybee (Apis mellifera) has been an important insect for both the study of social insect behaviour and agriculture. Honey production and defensive behaviour are honeybees two notable and economically valuable traits. Here we perform a genome-wide association study on 925 honeybee colonies from …
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Transgenic Tools in Ants and the Representation of Alarm Pheromones in the Ant Antennial Lobe
… contribute to the evolution and maintenance of insect societies. These features, especially their extreme morphological plasticity, collective behavior, and complex chemical communication, together with their small sizes and relatively simple brains, make ants intriguing model systems for many …
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Factors regulating signal composition and task allocation in colonies of the ant Myrmicaria eumenoides
The integrity of social insect colonies is facilitated by nestmate recognition. A defining characteristic of social insect colonies is their elaborate division of labour system. Cuticular hydrocarbons (CHCs) have long been implicated in nestmate recognition. In the African ant Myrmicaria eumenoides …
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An improved artificial bee colony algorithm for training multilayer perceptron in time series prediction
… Bee Colony (ABC) algorithms built on the social insect behavior are proposed in this research for training ANN, namely the widely used Multilayer Perceptron (MLP). Here, three improved learning approaches inspired by artificial honey bee's behavior are used to train MLP. They are: Global …
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Naturally occurring resistance to Varroa destructor in the Western honey bee (Apis mellifera)
The honey bee is an important social insect; it along with other bee species can be regarded as a keystone organism. The pollination services bees provide are invaluable not only in terms of human health and food security, with an estimated worth of €153 billion to food production (Gallai et al., …
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Cooperation And Competition In Paper Wasp And Human Societies
… of competition on cooperation among members of a social group. These lines of research are complementary and mutually reinforcing: drawing on approaches developed to analyze the behavior of one taxon to investigate another can help us elucidate universal principles governing the evolution of …
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Sampling, Detection, and Characterization of Endogenous Peptides
… of more than 35 neuropeptide genes in the social insect of the honey bee, Apis mellifera. The honey bee is a model organism for the study of social insects, and more specifically ""sociogenomics"". Due to the lack of neuropeptide information available for the honey bee, we sought to expand …
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The effects of individual-level differences in metabolic rate on foraging behavior and life history traits in honeybees
… of phenotypic diversity in metabolic rate in a social insect colony. We then tested the rate of living hypothesis in honeybees using the same phenotypic lines of bees with low and high metabolic rate and by combining it with radio frequency identification (RFID) technology and respirometry to …
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Caste-Specific Expression Of Coding And Noncoding Genes In Ant Brains
… one genome can give rise to multiple phenotypes. Social insects are an ideal model system for epigenetics, as their colonies contain individuals with highly similar genomes but divergent behaviors and phenotypes. Harpegnathos saltator in particular provides opportunities for studying epigenetic …
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Postembryonic Development and Adult Plasticity of the Mushroom Bodies in the Honey Bee Brain
… bodies are distinctive, paired neuropils in the insect brain. Convergence of numerous sensory modalities in the mushroom bodies indicates that they may be a center for sensory integration. Ablation and lesioning experiments have also established a role for this brain region in olfactory …
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Comparative Physiological and Genomic Analyses of Division of Labor in Honey Bees and Paper Wasps
… at understanding the mechanisms and evolution of sociality in colony-forming insects. I first summarize a conceptual framework for the study of social behavior inspired by the field of evolutionary developmental biology (""evo-devo""); I suggest complex social behavior evolves via co-option of …
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Reproductive plasticity and the evolution of the insect societies
… is to understand how novel traits arise. Eusociality represents an extreme form of social organization which has evolved independently a number of times across insects and is characterized especially in the Hymenoptera by a novel polyphenism between reproductive (queen) and non-reproductive …
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Agent-Based Modelling of Decentralized Ant Behaviour using High Performance Computing
… of telecommunication. The major challenge in social insect research is understanding how colony-level behaviour emerges from individual interactions. Models to date focus on simple pheromone usage with mathematically devised behaviour, which deviates largely from the real ant behaviour. …
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Local Variation in the Chemical Defence of European Pine Sawfly (Neodiprion sertifer): Effects of Host Tree Chemistry and Social Environment
… an example of a chemically defending forest pest insect that sequesters resinous acids from the host plant for its antipredator defence. It is also a social insect that feeds and defends cooperatively in a group during the larval stage. In this master’s thesis, I studied the variation in chemical …
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Mechanisms for the Evolution of Superorganismality in Ants
… of conducting manipulative experiments in social insect colonies. Recent work on establishing the clonal raider ant, Ooceraea biroi, as a tractable laboratory model, has helped alleviate this difficulty. In this dissertation, I study the proximate evolution of superorganismality in ants. …
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Mechanisms involved in eusocial evolution in bees
… on the evolutionary processes through which sociality arises. Bees are a valuable group for studying social evolution because the common ancestor of all bees was solitary and the most extreme form of group living, eusociality, has evolved multiple independent times within the bees. Recent …
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Multiple dimensions of floral rewards drive pollinator behavior and pollen movement
… a diversity of rewards to attract pollinating insects. Most commonly these are nutritional rewards; either pollen (primarily protein and lipids) and/or nectar (primarily carbohydrates) in varying combinations and qualities. This reward strategy varies inter- and intraspecifically, but …
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Molecular basis of life-history evolution: a tale of two insects
… differences in life histories in one eusocial and one non-social insect. Eusocial insects are good candidates to study mechanisms of tradeoffs between fecundity and survival. Eusocial insect queens enjoy a long lifespan that does not come at the cost of reduced fecundity, whereas workers …
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