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.
Results
Showing 1 to 20 of 35 for “"behavioral plasticity"”.
-
cGMP -Dependent Protein Kinase, Behavioral Plasticity, and Foraging in Honey Bees and Fruit Flies
Here I describe a study of comparative behavioral genetics of a complex behavioral phenotype that is affected by a gene encoding a cGMP-dependent protein kinase (PKG, foraging). I accomplish this by using a traditional genetic model---the fruit fly, Drosophila melanogaster , and a traditional …
-
Regulation of Behavioral Plasticity: Mechanism Underlying Olfaction-Dependent Changes in Male Specific Courtship Behaviors in Drosophila melanogaster
… chromatin-based regulation on the important behavioral regulator, fruitlessM. fruM is a transcription factor that regulates male-specific behaviors in flies, and it is both necessary and sufficient for male courtship behaviors. We found that juvenile hormone signaling via its receptors …
-
A Time-Course Analysis of Behavioral Plasticity and Differential Gene Expression Patterns in Response to Density in Schistocerca americana (Orthoptera: Acrididae)
<p>Phenotypic plasticity is the ability of the genotype to express alternative phenotypes in response to different environmental conditions and this is considered to be an adaptation in which a species can survive and persist in a rapidly changing environment. Some grasshoppers and locusts are …
-
Extracellular Signal-Regulated Kinase 7, A Fast Evolving Map Kinase Under Positive Selection, Is Associated With Multiple Levels Of Honeybee Behavioral Plasticity
Submitted by Jason Ebaugh (ebaugh@illinois.edu) on 2009-07-04T21:26:59Z No. of bitstreams: 1 EbaughJasonDissertation.pdf: 9370507 bytes, checksum: 6fc1987ff7690d3a540912672da149c0 (MD5)
-
Exploring the fathering brain: insights from neural activation
Organisms require a great deal of behavioral plasticity to accomplish the tasks associated with reproduction. In addition to day-to-day activities, breeding animals must establish a territory, find a mate, find a place to raise offspring, mate and rear offspring. While organisms are breeding, they …
-
Novel Applications of Multivariate Methods for Exploring Personality in African Elephants
… on the observers’ interpretations of an animal’s behavioral patterns, therefore making them subject to observer bias. Furthermore, elephants have a capacity for learning; thus, they may alter their behavioral patterns over time. This behavioral plasticity in itself might be a way of measuring …
-
An Investigation of the Effect of Malathion on Adaptive Plasticity of Pseudacris sierra
… Chapter one reviews what is known about adaptive plasticity in response to predators, describes the physiological systems involved in such plasticity, and outlines the evolutionary consequences of adaptive plasticity. Chapter two describes a scientific experiment that investigates how malathion …
-
Employment and Welfare-to-Work Training Initiatives: The Effects of Pre-Training Attitudes on Job-Search Behavior, Employment Status, and Job-Search Intended Effort
… examine individual pre-training attitudinal and behavioral variables, including self-efficacy, employment commitment, and unemployment negativity. The study then examined the relationship between these variables and post-training job-search behavior, employment status, and job-search intended …
-
Analysis of courtship behaviors of the desert tortoise, Gopherus agassizii
… than they bit larger females, an indication of behavioral plasticity. Males in successful matings were larger, mounted longer, rammed less, and bit more than males in unsuccessful matings. These results lend insight into the sources and amount of variability in reptilian reproductive behaviors.
-
Recursive Behavior Recording: Complex Motor Stereotypies and Anatomical Behavior Descriptions
A novel anatomical behavioral descriptive taxonomy improves motion capture in complex motor stereotypies (CMS) by indexing precise time data without degradation in the complexity of whole body movement in CMS. The absence of etiological explanation of complex motor stereotypies warrants the …
-
The Role of DNA Methylation in Addiction and Depression
… (Dnmt’s) in brain, the regulation and behavioral role of DNA methylation remain poorlyunderstood. I found that Dnmt3a expression is persistently regulated in nucleus accumbens (NAc),a key brain reward region, by chronic cocaine or chronic social defeat stress. Moreover, NAc specific …
-
Reproductive Peformance of Great Egrets (Ardea alba) at High Island, Texas
… especially by incorporating the apparent behavioral plasticity of nestlings.
-
Predation Risk and Colony Structure in the Pea Aphid, Acyrthosiphon Pisum
… signals, and have high levels of phenotypic plasticity to cope with environmental stressors like predation risk, they are a model organism for investigating the influence of predation risk on clonal aggregations. This research quantifies the proximate ecological factors that influence the …
-
Use-Dependent Plasticity Regulates Sleep Need in Drosophila Melanogaster
… consolidation are reliant upon the expression of plasticity-related genes in Pigment Dispersing Factor: PDF)-expressing ventral lateral neurons: LNvs), a core component of the Drosophila circadian clock. Following social enrichment, LNv projections into the medulla exhibit structural plasticity as …
-
Analysis of Immediate-Early Gene Expression in the Songbird Brain Following Song Presentation
… powerful material for the study of neuronal and behavioral plasticity, both developmentally and during adult life. The purpose of this thesis is to begin to study molecular mechanisms underlying plasticity in the songbird brain. To test whether genomic mechanisms are involved, the expression of …
-
Neurogenomic dynamics following social interactions in male threespined sticklebacks
… aculeatus), a small fish famous for their rich behavioral repertoire. In chapter one I provided the detailed overview of the research included in this dissertation. The second chapter tested the hypothesis that there are conserved transcriptional responses to social interactions in sticklebacks …
-
The design and assembly of neural circuits for vocal communication in songbirds
… addition of new neurons in adulthood underlies behavioral plasticity, such as song learning. A better understanding of the cellular mechanisms that control the addition of new neurons to the postnatal brain may help clarify its biological function. This thesis is an investigation of the cell …
-
Novel Roles for the Activity-Regulated Genes Arc and Npas4 in Stress- and Cocaine-Induced Plasticity
… to disrupted structural and functional plasticity in brain regions involved in mood, reward, and motivation, including the nucleus accumbens (NAc) and medial prefrontal cortex (mPFC). However, the molecules and signaling pathways within these structures that regulate these behaviors, and …
-
Defining Genes and Circuits Affecting Naïve and Experience-Dependent Alcohol Preference in Drosophila melanogaster
… structures in flies control distinct alcohol behavioral responses. In humans, we find that polymorphisms in RSU1 are associated with brain activation in the ventral striatum during reward anticipation in adolescents and alcohol consumption in both adolescents and adults. Together, these data …
-
Reproductive plasticity and the evolution of the insect societies
… I leverage naturally-occurring social plasticity in two species of bees to shed light on potential mechanisms of caste evolution across social insects. In Chapter 1, I provide a detailed overview of the work contained within this dissertation. In Chapter 2, I develop a perspective on …
Page 1 of 2