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 160 for “"Honey Bee"”.
-
Crops, pesticides, and honey bee disease
Honey bee colonies are an essential factor in American agriculture and of overall ecosystem health. The winter of 2006 marked an observation of large scale losses of managed honey bee colonies (vanEngelsdorp et al, 2009). Since then, there has been an average loss of 30% of colonies in beekeeping …
-
Chemical Manipulation of Honey Bee Behavior
The loss of managed honey bee colonies, resulting from their unintentional exposure to pesticides, is a topic of concern for the agricultural and apicultural industry. Current methods for reducing pesticide exposure to bees involve the application of pesticides before crop bloom or in the evening …
-
Cloning and Analysis of a Honey Bee (Apis Mellifera) Period Gene Ortholog and Honey Bee Division of Labor
1Winston, M. L. (1987) The Biology of the Honey Bee. Harvard University Press, Cambridge, MA. 2Moore, D., J. E. Angel, I. M. Cheeseman, S. E. Fahrbach, and G. E. Robinson. (1998) Behav. Ecol. Sociobiol. 43: 147--160. 3Hall, J. C. (1995). TINS 18: 230--240.
-
NEONICOTINOID TOXICITY IN REPRODUCTIVE HONEY BEE CASTES
High pollinator losses of recent decades have been attributed to several causes including increased exposure to pesticides, particularly neonicotinoid insecticides. This has spiked re-evaluation of neonicotinoid use in agriculture and has heightened the need to enhance pesticide risk assessment. …
-
Honey Bee Communication: The Dance-Language Controversy
<p>In recent years, the evidence suggesting that honey bees communicate with a "dance language" has been strongly attacked on both theoretical and experimental grounds. The controversy is reviewed and the main issues are isolated and discussed. The fundamental obstacle to the resolution of this …
-
Neurogenomic architecture of honey bee social behavior
… and social organization in the western honey bee (Apis mellifera). This dissertation consists of original research on the neurogenomic architecture of social behavior in honey bees. Honey bees form highly complex societies and exhibit rich behavioral repertoires generated by a tiny brain …
-
The Opsins and Nuclear Receptors of the Honey Bee
… illustrate the value of the recently sequenced honey bee genuine for the expansion of our knowledge of insect evolution and physiology. In the first study, a novel lineage of insect opsins is described based on the identification of a novel opsin gene, pteropsin, in the honey bee. This novel …
-
Honey bee habitat at the University of Illinois campus
There has been a decrease in the numbers of pollinators, and pollinator refuges are needed to confront risks associated with the effects brought about by the pollinator shortage. This research studies the potential of using current No-Mow Zones and prairie zones at the University of Illinois as …
-
The effects of environmental factors on honey bee morbidity
… relationship between environmental factors and honey bee health. I have three primary objectives in conducting this research. First, I examine whether being located near neonicotinoid seed treated crops increases honey bee morbidity. Second, I examine if forage availability and weather affect …
-
Proximate and ultimate factors influencing honey bee reproductive-related behavior
… and why it evolved. I have examined aspects of honey bee (Apis mellifera) reproductive-related behavior using each of these forms of inquiry. I studied colonies of queenless worker bees in order to garner suggestions about why altruistic behavior evolved in bees. In queenless colonies, the loss …
-
Exploring winner effects in queens of the western honey bee
… the presence of a winner effect in virgin honey bee queens (Apis mellifera). Following the death or departure of the previous queen in a swarm, young virgin queens engage in fatal contests for the opportunity to become the new reproductive individual in the colony. To test for winner …
-
Impact of Temperature and Microbial Infection on the Honey Bee Hemocytes
<p>Introduction</p> <p>Honey bees (Apis mellifera) rely on hemocytes for immunity, wound healing, and hemolymph homeostasis. While 32°C reflects optimal hive conditions, suboptimal temperatures (22°C) and stressors like pathogens (Varroa destructor, bacteria) or pesticides impair hemocyte function. …
-
Molecular Characterization of Stress Response in Western Honey Bee (Apis mellifera)
<p>Honey bees are incredibly important for the reproduction of flowering plants and the sustainability of agricultural ecosystems. However, they face various stressors such as pesticides, pathogens, habitat loss, and climate change. Extensive research has been conducted to understand how bees …
-
Biogenic Amines and Division of Labor in the Honey Bee Society
… in task specialization, independent of age, in honey bee colonies. There were distinct differences associated with age-related division of labor. Older bees, notably foragers, had significantly higher levels of all three amines than did all younger bees working in the hive. Some amine level …
-
Effects of the antibiotic tetracycline on the honey bee gut microbiome
… can negatively impact host fitness. The honey bee gut microbiome is a relatively simple host-associated community that makes an excellent model system for studying microbiome stability. In addition, honey bees are essential agricultural pollinators, so factors that impact their health are …
-
Effects of nutrition on honey bee microbiology, disease occurrence, and hive growth
<p>Honey bees (Apis mellifera) are major pollinators of many food crops, but unfortunately, population declines are threatening global food security and ecosystem health. Honey bees are under multiple stressors, such as poor nutrition, parasitic mites, and pathogens. Similar to human health, the …
-
Creating healthier metropolitan ecosystems: honey bee habitat as a guideline for change
… the history, needs and habitat of the western honey bee (Apis mellifera), producing a set of guidelines that integrates bee habitat with human habitat to ultimately create more sustainable, healthier, urban environments. Habitats, both natural and metropolitan, across the globe have been …
-
Experience-Dependent Plasticity in the Mushroom Bodies of the Honey Bee Brain
… under study is Apis mellifera, the European honey bee. The honey bee has a rich behavioral repertoire that can easily be studied both in the laboratory and under natural conditions. The goal of these projects is to understand how a worker bees' experience as a forager alters its brain …
-
Neuroanatomical plasticity and division of labor in the honey bee (Apis mellifera)
"There is an aged-based division of labor in the honey bee colony. Adult workers spend the first several weeks performing tasks within the hive, including caring for brood (""nursing""). They then make a dramatic behavioral transition and begin foraging outdoors. Within the dark hive, tasks are …
Page 1 of 8