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 40 for “"social insects"”.
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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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The consequences and implications of ecology on body size distributions in social insects
… species, the study of life history traits in eusocial organisms is complicated by their reproductive division of labor. In social insects, reproduction is dominated by a queen (reproductive) caste while the majority of other tasks within the colony are performed by a worker (non-reproductive) …
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Ethologie des fourmis Eutetramorium mocquerysi (Emery, 1900) Hymenoptera, Formicidae, en laboratoire
… The colonies were nourished with portions of insects (larvae of coleoptera, locusts, cockroaches. ..).All social insects have several morphoanatomic castes (worker dominating, workers of high ranks: being able to become dominating, workers of low ranks: veritable worker,and the ant male). As …
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Ecology and Evolution of Caste and Polymorphism in Pogonomyrmex Seed Harvester Ants
… 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 (e.g., …
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Modeling Transportation Problems Using Concepts of Swarm Intelligence and Soft Computing
… researchers started studying the behavior of social insects (ants) in an attempt to use the swarm intelligence concept to develop artificial systems with the ability to search a problem's solution space in a way that is similar to the foraging search by a colony of social insects. The …
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Genomic studies of social evolution in bees
The eusocial insects (ants, termites, and some bees and wasps) are paragons of social complexity, with their highly organized societies comprised of primarily sterile workers, headed by one or a few reproductives. Despite a rich body of theoretical, empirical, and natural history research on social …
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A Swarm Intelligence Approach to Distributed Mobile Surveillance
… strategies found in nature in the form of social insects as an inspiration for new control schemes. Swarm intelligence research centers around the interactions of such systems and how they can be applied to contemporary problems. In this thesis, a surveillance system of mobile autonomous …
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Immune Priming in A. Mellifera
… survival from infections. In colony-forming insects like the honey bee Apis mellifera, TgIP would yield a form of lasting immunity benefiting subsequent generations. TgIP has been demonstrated in multiple social insects, but the efficacy and longevity of this immune protection is yet to be …
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Termite Inquilinism: proximate mechanisms mediating coexistence
… Keywords: Symbiosis, Isoptera, Physiology, Social Insects, Cohabitation
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The role of communication in the foraging process of social bees
In the various groups of social bees, different systems of communication about food sources occur. These communication systems are different solutions to a common problem of social insects: efficiently allocating the necessary number of workers first to the task of foraging and second to the most …
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RNA interference of worker sterility genes: Testing mechanisms of reproductive regulation in Apis mellifera
Social insects such as the honey bee (Apis mellifera) are well known for their reproductive division of labour and eusocial colony systems. Honey bee workers forgo reproduction in favour of being selfless in directing reproductive benefits towards their queen mother. This altruistic tendency is a …
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Anthills built to order : automating construction with artificial swarms
Social insects build large, complex structures, which emerge through the collective actions of many simple agents acting with no centralized control or preplanning. These natural systems motivate investigating the use of artificial swarms to automate construction or fabrication. The goal is to be …
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Computer simulations of kin selection
… kin selection is central to the understanding of social evolution. Recent theoretical work suggests a limitation on the action of kin selection in structured populations. The first such limit involves a specialized population structure, termed "budding viscosity," common to social insects, in …
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Foraging in a Complex World: From Individual Flight Performance to Collective Behavior in Bumblebees (Bombus Impatiens)
… complex behavior that is key to survival. For social insects such as bumblebees, successful foraging depends on a combination of individual traits (e.g. physiological and biomechanical performance of individual workers) and collective behavioral strategies for regulating food intake at the …
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Super-Organismal Effects Of A Widespread Insect Endosymbiotic Bacteria
… understanding of their effects on the biology of social insects such as ants. Wolbachia, a maternally-inherited endosymbiont, is the most widespread insect endosymbiont. It manipulates host reproduction and confers fitness benefits to the host to favor its own vertical transmission. While …
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Towards a swarm robotic approach for cooperative object recognition
Social insects have inspired the behaviours of swarm robotic systems for the last 20 years. Interactions of the simple individuals in these swarms form solutions to relatively complex problems. A novel swarm robotic method is investigated for future robotic cooperative object recognition tasks. …
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Disembodied characters
A colony of social insects as a whole can be regarded as an organism that reproduces, maintains its internal structure, and survives in a hostile an unpredictable environment. Such superorganism - an entity that consists of smaller component organisms - is able to perform remarkable feats, …
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Molecular Characterization of Stress Response in Western Honey Bee (Apis mellifera)
… stress biology and resilience mechanisms in social insects (Winston 1937). Insights gained from honey bee research can inform conservation efforts of sustainable pest management strategies (Johnson and Ellis, 2010). In conclusion, this research on honey bee responses to stress underscores the …
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Genetic stigmergy: Framework and applications
… an effective system for self-organization among social insects. Through the use of chemical agents known as pheromones, insect colonies are capable of complex collective behavior often beyond the scope of an individual agent. In an effort to develop human-made systems with the same robustness, …
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Prevalence and impacts of ants colonizing active bird nests in Illinois
… Many organisms, including birds, mammals and social insects, build nests which create unique and suitable microhabitats for a variety of other animals. These constructed environments can protect their residents from predation and from harmful abiotic conditions. In turn, the communities of …
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